Kotlin migration: Spring server

108 files changed, 2469 insertions, 3433 deletions

diff --git a/backend/build.gradle b/backend/build.gradle
index aec1bc9e..6c733559 100644
--- a/backend/build.gradle
+++ b/backend/build.gradle
@@ -1,10 +1,21 @@
-plugins {
-    id 'org.springframework.boot' version '2.0.1.RELEASE'
+buildscript {
+    ext {
+        kotlinVersion = '1.2.51'
+        springBootVersion = '2.0.3.RELEASE'
+    }
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}")
+        classpath("org.jetbrains.kotlin:kotlin-allopen:${kotlinVersion}")
+    }
 }
 
-apply plugin: 'java'
-apply plugin: 'idea'
 apply plugin: 'checkstyle'
+apply plugin: 'kotlin'
+apply plugin: 'kotlin-spring'
 apply plugin: 'org.springframework.boot'
 apply plugin: 'io.spring.dependency-management'
 
@@ -13,6 +24,20 @@ version '1.0-SNAPSHOT'
 
 sourceCompatibility = 1.8
 
+compileKotlin {
+    kotlinOptions {
+        freeCompilerArgs = ["-Xjsr305=strict"]
+        jvmTarget = "1.8"
+    }
+}
+
+compileTestKotlin {
+    kotlinOptions {
+        freeCompilerArgs = ["-Xjsr305=strict"]
+        jvmTarget = "1.8"
+    }
+}
+
 repositories {
     mavenCentral()
 }
@@ -23,12 +48,16 @@ configurations {
 
 dependencies {
     compile project(':game-engine')
+    compile 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
+    compile 'org.jetbrains.kotlin:kotlin-reflect' // required by Spring 5
 
     compile 'org.springframework.boot:spring-boot-starter-websocket'
     compile 'org.springframework.boot:spring-boot-starter-security'
-    // required by spring security with websockets
+    // required by spring security when using websockets
     compile 'org.springframework.security:spring-security-messaging'
 
+    compile "com.fasterxml.jackson.module:jackson-module-kotlin"
+
     compile 'ch.qos.logback:logback-classic:1.1.8'
     compile 'org.hildan.livedoc:livedoc-springboot:4.3.2'
     compile 'org.hildan.livedoc:livedoc-ui-webjar:4.3.2'
@@ -38,7 +67,7 @@ dependencies {
     testCompile 'org.springframework.boot:spring-boot-starter-test'
     testCompile 'org.hildan.jackstomp:jackstomp:1.1.0'
 
-    checkstyleConfig "org.hildan.checkstyle:checkstyle-config:2.1.0"
+    checkstyleConfig 'org.hildan.checkstyle:checkstyle-config:2.1.0'
 }
 
 checkstyle {
diff --git a/backend/src/main/java/org/luxons/sevenwonders/SevenWonders.java b/backend/src/main/java/org/luxons/sevenwonders/SevenWonders.java
deleted file mode 100644
index c656b2c3..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/SevenWonders.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package org.luxons.sevenwonders;
-
-import org.hildan.livedoc.spring.boot.starter.EnableJSONDoc;
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-
-@SpringBootApplication
-@EnableJSONDoc
-public class SevenWonders {
-
-    public static void main(String[] args) {
-        SpringApplication.run(SevenWonders.class, args);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java
deleted file mode 100644
index c404cd74..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/ChooseNameAction.java
+++ /dev/null
@@ -1,30 +0,0 @@
-package org.luxons.sevenwonders.actions;
-
-import javax.validation.constraints.NotNull;
-import javax.validation.constraints.Size;
-
-import org.hildan.livedoc.core.annotations.types.ApiType;
-import org.hildan.livedoc.core.annotations.types.ApiTypeProperty;
-
-/**
- * The action to choose the player's name. This is the first action that should be called.
- */
-@ApiType(group = "Actions")
-public class ChooseNameAction {
-
-    @NotNull
-    @Size(min = 2, max = 20)
-    private String playerName;
-
-    /**
-     * @return The display name of the player. May contain spaces and special characters.
-     */
-    @ApiTypeProperty(required = true)
-    public String getPlayerName() {
-        return playerName;
-    }
-
-    public void setPlayerName(String playerName) {
-        this.playerName = playerName;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java
deleted file mode 100644
index 771a5a9c..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/CreateGameAction.java
+++ /dev/null
@@ -1,30 +0,0 @@
-package org.luxons.sevenwonders.actions;
-
-import javax.validation.constraints.NotNull;
-import javax.validation.constraints.Size;
-
-import org.hildan.livedoc.core.annotations.types.ApiType;
-
-/**
- * The action to create a game.
- */
-@ApiType(group = "Actions")
-public class CreateGameAction {
-
-    @NotNull
-    @Size(min = 2, max = 30)
-    private String gameName;
-
-    /**
-     * @return The name of the game to create
-     */
-    public String getGameName() {
-        return gameName;
-    }
-
-    public void setGameName(String gameName) {
-        this.gameName = gameName;
-    }
-}
-
-
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/JoinGameAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/JoinGameAction.java
deleted file mode 100644
index 2675dc71..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/JoinGameAction.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package org.luxons.sevenwonders.actions;
-
-import javax.validation.constraints.NotNull;
-
-import org.hildan.livedoc.core.annotations.types.ApiType;
-import org.luxons.sevenwonders.doc.Documentation;
-
-/**
- * The action to join a game.
- */
-@ApiType(group = Documentation.GROUP_ACTIONS)
-public class JoinGameAction {
-
-    @NotNull
-    private Long gameId;
-
-    /**
-     * @return The ID of the game to join
-     */
-    public Long getGameId() {
-        return gameId;
-    }
-
-    public void setGameId(Long gameId) {
-        this.gameId = gameId;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/PrepareMoveAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/PrepareMoveAction.java
deleted file mode 100644
index e3622b1b..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/PrepareMoveAction.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.luxons.sevenwonders.actions;
-
-import javax.validation.constraints.NotNull;
-
-import org.hildan.livedoc.core.annotations.types.ApiType;
-import org.luxons.sevenwonders.doc.Documentation;
-import org.luxons.sevenwonders.game.api.PlayerMove;
-
-/**
- * The action to prepare the next move during a game.
- */
-@ApiType(group = Documentation.GROUP_ACTIONS)
-public class PrepareMoveAction {
-
-    @NotNull
-    private PlayerMove move;
-
-    /**
-     * @return the move to prepare
-     */
-    public PlayerMove getMove() {
-        return move;
-    }
-
-    public void setMove(PlayerMove move) {
-        this.move = move;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/ReorderPlayersAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/ReorderPlayersAction.java
deleted file mode 100644
index ce272340..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/ReorderPlayersAction.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package org.luxons.sevenwonders.actions;
-
-import java.util.List;
-import javax.validation.constraints.NotNull;
-
-import org.hildan.livedoc.core.annotations.types.ApiType;
-import org.luxons.sevenwonders.doc.Documentation;
-
-/**
- * The action to update the order of the players around the table. Can only be called in the lobby by the owner of the
- * game.
- */
-@ApiType(group = Documentation.GROUP_ACTIONS)
-public class ReorderPlayersAction {
-
-    @NotNull
-    private List<String> orderedPlayers;
-
-    /**
-     * @return the list of usernames of the players, in the new order
-     */
-    public List<String> getOrderedPlayers() {
-        return orderedPlayers;
-    }
-
-    public void setOrderedPlayers(List<String> orderedPlayers) {
-        this.orderedPlayers = orderedPlayers;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/actions/UpdateSettingsAction.java b/backend/src/main/java/org/luxons/sevenwonders/actions/UpdateSettingsAction.java
deleted file mode 100644
index 7c48dee1..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/actions/UpdateSettingsAction.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.luxons.sevenwonders.actions;
-
-import javax.validation.constraints.NotNull;
-
-import org.hildan.livedoc.core.annotations.types.ApiType;
-import org.luxons.sevenwonders.doc.Documentation;
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-
-/**
- * The action to update the settings of the game. Can only be called in the lobby by the owner of the game.
- */
-@ApiType(group = Documentation.GROUP_ACTIONS)
-public class UpdateSettingsAction {
-
-    @NotNull
-    private CustomizableSettings settings;
-
-    /**
-     * @return the new values for the settings
-     */
-    public CustomizableSettings getSettings() {
-        return settings;
-    }
-
-    public void setSettings(CustomizableSettings settings) {
-        this.settings = settings;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/config/AnonymousUsersHandshakeHandler.java b/backend/src/main/java/org/luxons/sevenwonders/config/AnonymousUsersHandshakeHandler.java
deleted file mode 100644
index bebbd477..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/config/AnonymousUsersHandshakeHandler.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.luxons.sevenwonders.config;
-
-import java.security.Principal;
-import java.util.Map;
-
-import org.springframework.http.server.ServerHttpRequest;
-import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
-import org.springframework.web.socket.WebSocketHandler;
-import org.springframework.web.socket.server.support.DefaultHandshakeHandler;
-
-class AnonymousUsersHandshakeHandler extends DefaultHandshakeHandler {
-
-    private int playerId = 0;
-
-    @Override
-    public Principal determineUser(ServerHttpRequest request, WebSocketHandler wsHandler,
-            Map<String, Object> attributes) {
-        Principal p = super.determineUser(request, wsHandler, attributes);
-        if (p == null) {
-            p = new UsernamePasswordAuthenticationToken("player" + playerId++, null);
-        }
-        return p;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/config/TopicSubscriptionInterceptor.java b/backend/src/main/java/org/luxons/sevenwonders/config/TopicSubscriptionInterceptor.java
deleted file mode 100644
index 855b7800..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/config/TopicSubscriptionInterceptor.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package org.luxons.sevenwonders.config;
-
-import org.luxons.sevenwonders.validation.DestinationAccessValidator;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.messaging.Message;
-import org.springframework.messaging.MessageChannel;
-import org.springframework.messaging.simp.stomp.StompCommand;
-import org.springframework.messaging.simp.stomp.StompHeaderAccessor;
-import org.springframework.messaging.support.ChannelInterceptorAdapter;
-import org.springframework.stereotype.Component;
-
-@Component
-public class TopicSubscriptionInterceptor extends ChannelInterceptorAdapter {
-
-    private static final Logger logger = LoggerFactory.getLogger(TopicSubscriptionInterceptor.class);
-
-    private final DestinationAccessValidator destinationAccessValidator;
-
-    @Autowired
-    public TopicSubscriptionInterceptor(DestinationAccessValidator destinationAccessValidator) {
-        this.destinationAccessValidator = destinationAccessValidator;
-    }
-
-    @Override
-    public Message<?> preSend(Message<?> message, MessageChannel channel) {
-        StompHeaderAccessor headerAccessor = StompHeaderAccessor.wrap(message);
-        if (StompCommand.SUBSCRIBE.equals(headerAccessor.getCommand())) {
-            String username = headerAccessor.getUser().getName();
-            String destination = headerAccessor.getDestination();
-            if (!destinationAccessValidator.hasAccess(username, destination)) {
-                sendForbiddenSubscriptionError(username, destination);
-                return null;
-            }
-        }
-        return message;
-    }
-
-    private void sendForbiddenSubscriptionError(String username, String destination) {
-        logger.error(String.format("Player '%s' is not allowed to access %s", username, destination));
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/config/WebSecurityConfig.java b/backend/src/main/java/org/luxons/sevenwonders/config/WebSecurityConfig.java
deleted file mode 100644
index 2cfb966d..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/config/WebSecurityConfig.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package org.luxons.sevenwonders.config;
-
-import org.springframework.context.annotation.Configuration;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
-
-@Configuration
-public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
-    @Override
-    protected void configure(HttpSecurity httpSecurity) {
-        // this disables default authentication settings
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java b/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java
deleted file mode 100644
index b8018a86..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/config/WebSocketConfig.java
+++ /dev/null
@@ -1,51 +0,0 @@
-package org.luxons.sevenwonders.config;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.messaging.simp.config.ChannelRegistration;
-import org.springframework.messaging.simp.config.MessageBrokerRegistry;
-import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
-import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
-import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
-import org.springframework.web.socket.server.support.DefaultHandshakeHandler;
-
-@Configuration
-@EnableWebSocketMessageBroker
-public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
-
-    private final TopicSubscriptionInterceptor topicSubscriptionInterceptor;
-
-    @Autowired
-    public WebSocketConfig(TopicSubscriptionInterceptor topicSubscriptionInterceptor) {
-        this.topicSubscriptionInterceptor = topicSubscriptionInterceptor;
-    }
-
-    @Override
-    public void configureMessageBroker(MessageBrokerRegistry config) {
-        // prefixes for all subscriptions
-        config.enableSimpleBroker("/queue", "/topic");
-        config.setUserDestinationPrefix("/user");
-
-        // /app for normal calls, /topic for subscription events
-        config.setApplicationDestinationPrefixes("/app", "/topic");
-    }
-
-    @Override
-    public void registerStompEndpoints(StompEndpointRegistry registry) {
-        registry.addEndpoint("/seven-wonders-websocket")
-                .setHandshakeHandler(handshakeHandler())
-                .setAllowedOrigins("http://localhost:3000") // to allow frontend server proxy requests in dev mode
-                .withSockJS();
-    }
-
-    @Bean
-    public DefaultHandshakeHandler handshakeHandler() {
-        return new AnonymousUsersHandshakeHandler();
-    }
-
-    @Override
-    public void configureClientInboundChannel(ChannelRegistration registration) {
-        registration.interceptors(topicSubscriptionInterceptor);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java b/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java
deleted file mode 100644
index 9bb96559..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameBrowserController.java
+++ /dev/null
@@ -1,129 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-import java.util.Collection;
-import java.util.Collections;
-
-import org.hildan.livedoc.core.annotations.Api;
-import org.luxons.sevenwonders.actions.CreateGameAction;
-import org.luxons.sevenwonders.actions.JoinGameAction;
-import org.luxons.sevenwonders.errors.ApiMisuseException;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.LobbyRepository;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.messaging.handler.annotation.MessageMapping;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-import org.springframework.messaging.simp.annotation.SendToUser;
-import org.springframework.messaging.simp.annotation.SubscribeMapping;
-import org.springframework.stereotype.Controller;
-import org.springframework.validation.annotation.Validated;
-
-/**
- * This is the place where the player looks for a game.
- */
-@Api(name = "GameBrowser")
-@Controller
-public class GameBrowserController {
-
-    private static final Logger logger = LoggerFactory.getLogger(GameBrowserController.class);
-
-    private final LobbyController lobbyController;
-
-    private final LobbyRepository lobbyRepository;
-
-    private final PlayerRepository playerRepository;
-
-    private final SimpMessagingTemplate template;
-
-    @Autowired
-    public GameBrowserController(LobbyController lobbyController, LobbyRepository lobbyRepository,
-            PlayerRepository playerRepository, SimpMessagingTemplate template) {
-        this.lobbyController = lobbyController;
-        this.lobbyRepository = lobbyRepository;
-        this.playerRepository = playerRepository;
-        this.template = template;
-    }
-
-    /**
-     * Gets the created or updated games. The list of existing games is received on this topic at once upon
-     * subscription, and then each time the list changes.
-     *
-     * @param principal
-     *         the connected user's information
-     *
-     * @return the current list of {@link Lobby}s
-     */
-    @SubscribeMapping("/games") // prefix /topic not shown
-    public Collection<Lobby> listGames(Principal principal) {
-        logger.info("Player '{}' subscribed to /topic/games", principal.getName());
-        return lobbyRepository.list();
-    }
-
-    /**
-     * Creates a new {@link Lobby}.
-     *
-     * @param action
-     *         the action to create the game
-     * @param principal
-     *         the connected user's information
-     *
-     * @return the newly created {@link Lobby}
-     */
-    @MessageMapping("/lobby/create")
-    @SendToUser("/queue/lobby/joined")
-    public Lobby createGame(@Validated CreateGameAction action, Principal principal) {
-        checkThatUserIsNotInAGame(principal, "cannot create another game");
-
-        Player gameOwner = playerRepository.find(principal.getName());
-        Lobby lobby = lobbyRepository.create(action.getGameName(), gameOwner);
-
-        logger.info("Game '{}' ({}) created by {} ({})", lobby.getName(), lobby.getId(), gameOwner.getDisplayName(),
-                gameOwner.getUsername());
-
-        // notify everyone that a new game exists
-        template.convertAndSend("/topic/games", Collections.singletonList(lobby));
-        return lobby;
-    }
-
-    /**
-     * Joins an existing {@link Lobby}.
-     *
-     * @param action
-     *         the action to join the game
-     * @param principal
-     *         the connected user's information
-     *
-     * @return the {@link Lobby} that has just been joined
-     */
-    @MessageMapping("/lobby/join")
-    @SendToUser("/queue/lobby/joined")
-    public Lobby joinGame(@Validated JoinGameAction action, Principal principal) {
-        checkThatUserIsNotInAGame(principal, "cannot join another game");
-
-        Lobby lobby = lobbyRepository.find(action.getGameId());
-        Player newPlayer = playerRepository.find(principal.getName());
-        lobby.addPlayer(newPlayer);
-
-        logger.info("Player '{}' ({}) joined game {}", newPlayer.getDisplayName(), newPlayer.getUsername(),
-                lobby.getName());
-        lobbyController.sendLobbyUpdateToPlayers(lobby);
-        return lobby;
-    }
-
-    private void checkThatUserIsNotInAGame(Principal principal, String impossibleActionDescription) {
-        Lobby lobby = playerRepository.find(principal.getName()).getLobby();
-        if (lobby != null) {
-            throw new UserAlreadyInGameException(lobby.getName(), impossibleActionDescription);
-        }
-    }
-
-    static class UserAlreadyInGameException extends ApiMisuseException {
-        UserAlreadyInGameException(String gameName, String impossibleActionDescription) {
-            super("Client already in game '" + gameName + "', " + impossibleActionDescription);
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java b/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java
deleted file mode 100644
index f8d60ece..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/controllers/GameController.java
+++ /dev/null
@@ -1,111 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-import java.util.List;
-
-import org.hildan.livedoc.core.annotations.Api;
-import org.luxons.sevenwonders.actions.PrepareMoveAction;
-import org.luxons.sevenwonders.game.Game;
-import org.luxons.sevenwonders.game.api.PlayerTurnInfo;
-import org.luxons.sevenwonders.game.api.Table;
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.output.PreparedCard;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.messaging.handler.annotation.MessageMapping;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-import org.springframework.stereotype.Controller;
-
-/**
- * This API is for in-game events management.
- */
-@Api(name = "Game")
-@Controller
-public class GameController {
-
-    private static final Logger logger = LoggerFactory.getLogger(GameController.class);
-
-    private final SimpMessagingTemplate template;
-
-    private final PlayerRepository playerRepository;
-
-    @Autowired
-    public GameController(SimpMessagingTemplate template, PlayerRepository playerRepository) {
-        this.template = template;
-        this.playerRepository = playerRepository;
-    }
-
-    /**
-     * Notifies the game that the player is ready to receive his hand.
-     *
-     * @param principal
-     *         the connected user's information
-     */
-    @MessageMapping("/game/sayReady")
-    public void ready(Principal principal) {
-        Player player = playerRepository.find(principal.getName());
-        player.setReady(true);
-        Game game = player.getGame();
-        logger.info("Game {}: player {} is ready for the next turn", game.getId(), player);
-
-        Lobby lobby = player.getLobby();
-        List<Player> players = lobby.getPlayers();
-
-        boolean allReady = players.stream().allMatch(Player::isReady);
-        if (allReady) {
-            logger.info("Game {}: all players ready, sending turn info", game.getId());
-            players.forEach(p -> p.setReady(false));
-            sendTurnInfo(players, game);
-        } else {
-            sendPlayerReady(game.getId(), player);
-        }
-    }
-
-    private void sendTurnInfo(List<Player> players, Game game) {
-        for (PlayerTurnInfo turnInfo : game.getCurrentTurnInfo()) {
-            Player player = players.get(turnInfo.getPlayerIndex());
-            template.convertAndSendToUser(player.getUsername(), "/queue/game/turn", turnInfo);
-        }
-    }
-
-    private void sendPlayerReady(long gameId, Player player) {
-        template.convertAndSend("/topic/game/" + gameId + "/playerReady", player.getUsername());
-    }
-
-    /**
-     * Prepares the player's next move. When all players have prepared their moves, all moves are executed.
-     *
-     * @param action
-     *         the action to prepare the move
-     * @param principal
-     *         the connected user's information
-     */
-    @MessageMapping("/game/prepareMove")
-    public void prepareMove(PrepareMoveAction action, Principal principal) {
-        Player player = playerRepository.find(principal.getName());
-        Game game = player.getGame();
-        CardBack preparedCardBack = game.prepareMove(player.getIndex(), action.getMove());
-        PreparedCard preparedCard = new PreparedCard(player, preparedCardBack);
-        logger.info("Game {}: player {} prepared move {}", game.getId(), principal.getName(), action.getMove());
-
-        if (game.allPlayersPreparedTheirMove()) {
-            logger.info("Game {}: all players have prepared their move, executing turn...", game.getId());
-            Table table = game.playTurn();
-            sendPlayedMoves(game.getId(), table);
-        } else {
-            sendPreparedCard(game.getId(), preparedCard);
-        }
-    }
-
-    private void sendPlayedMoves(long gameId, Table table) {
-        template.convertAndSend("/topic/game/" + gameId + "/tableUpdates", table);
-    }
-
-    private void sendPreparedCard(long gameId, PreparedCard preparedCard) {
-        template.convertAndSend("/topic/game/" + gameId + "/prepared", preparedCard);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/controllers/HomeController.java b/backend/src/main/java/org/luxons/sevenwonders/controllers/HomeController.java
deleted file mode 100644
index 97bc8b67..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/controllers/HomeController.java
+++ /dev/null
@@ -1,52 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-
-import org.hildan.livedoc.core.annotations.Api;
-import org.luxons.sevenwonders.actions.ChooseNameAction;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.messaging.handler.annotation.MessageMapping;
-import org.springframework.messaging.simp.annotation.SendToUser;
-import org.springframework.stereotype.Controller;
-import org.springframework.validation.annotation.Validated;
-
-/**
- * Handles actions in the homepage of the game.
- */
-@Api(name = "Home")
-@Controller
-public class HomeController {
-
-    private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
-
-    private final PlayerRepository playerRepository;
-
-    @Autowired
-    public HomeController(PlayerRepository playerRepository) {
-        this.playerRepository = playerRepository;
-    }
-
-    /**
-     * Creates/updates the player's name (for the user's session).
-     *
-     * @param action
-     *         the action to choose the name of the player
-     * @param principal
-     *         the connected user's information
-     *
-     * @return the created {@link Player} object
-     */
-    @MessageMapping("/chooseName")
-    @SendToUser("/queue/nameChoice")
-    public Player chooseName(@Validated ChooseNameAction action, Principal principal) {
-        String username = principal.getName();
-        Player player = playerRepository.createOrUpdate(username, action.getPlayerName());
-
-        logger.info("Player '{}' chose the name '{}'", username, player.getDisplayName());
-        return player;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/controllers/LobbyController.java b/backend/src/main/java/org/luxons/sevenwonders/controllers/LobbyController.java
deleted file mode 100644
index 330a0f7f..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/controllers/LobbyController.java
+++ /dev/null
@@ -1,141 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-import java.util.Collections;
-
-import org.hildan.livedoc.core.annotations.Api;
-import org.luxons.sevenwonders.actions.ReorderPlayersAction;
-import org.luxons.sevenwonders.actions.UpdateSettingsAction;
-import org.luxons.sevenwonders.errors.ApiMisuseException;
-import org.luxons.sevenwonders.game.Game;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.messaging.handler.annotation.MessageMapping;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-import org.springframework.stereotype.Controller;
-import org.springframework.validation.annotation.Validated;
-
-/**
- * Handles actions in the game's lobby. The lobby is the place where players gather before a game.
- */
-@Api(name = "Lobby")
-@Controller
-public class LobbyController {
-
-    private static final Logger logger = LoggerFactory.getLogger(LobbyController.class);
-
-    private final PlayerRepository playerRepository;
-
-    private final SimpMessagingTemplate template;
-
-    @Autowired
-    public LobbyController(PlayerRepository playerRepository, SimpMessagingTemplate template) {
-        this.playerRepository = playerRepository;
-        this.template = template;
-    }
-
-    /**
-     * Leaves the current lobby.
-     *
-     * @param principal
-     *         the connected user's information
-     */
-    @MessageMapping("/lobby/leave")
-    public void leave(Principal principal) {
-        Lobby lobby = getLobby(principal);
-        Player player = lobby.removePlayer(principal.getName());
-
-        logger.info("Player {} left game '{}'", player, lobby.getName());
-        sendLobbyUpdateToPlayers(lobby);
-    }
-
-    /**
-     * Reorders the players in the current lobby. This can only be done by the lobby's owner.
-     *
-     * @param action
-     *         the action to reorder the players
-     * @param principal
-     *         the connected user's information
-     */
-    @MessageMapping("/lobby/reorderPlayers")
-    public void reorderPlayers(@Validated ReorderPlayersAction action, Principal principal) {
-        Lobby lobby = getOwnedLobby(principal);
-        lobby.reorderPlayers(action.getOrderedPlayers());
-
-        logger.info("Players in game '{}' reordered to {}", lobby.getName(), action.getOrderedPlayers());
-        sendLobbyUpdateToPlayers(lobby);
-    }
-
-    /**
-     * Updates the game settings. This can only be done by the lobby's owner.
-     *
-     * @param action
-     *         the action to update the settings
-     * @param principal
-     *         the connected user's information
-     */
-    @MessageMapping("/lobby/updateSettings")
-    public void updateSettings(@Validated UpdateSettingsAction action, Principal principal) {
-        Lobby lobby = getOwnedLobby(principal);
-        lobby.setSettings(action.getSettings());
-
-        logger.info("Updated settings of game '{}'", lobby.getName());
-        sendLobbyUpdateToPlayers(lobby);
-    }
-
-    void sendLobbyUpdateToPlayers(Lobby lobby) {
-        template.convertAndSend("/topic/lobby/" + lobby.getId() + "/updated", lobby);
-        template.convertAndSend("/topic/games", Collections.singletonList(lobby));
-    }
-
-    /**
-     * Starts the game.
-     *
-     * @param principal
-     *         the connected user's information
-     */
-    @MessageMapping("/lobby/startGame")
-    public void startGame(Principal principal) {
-        Lobby lobby = getOwnedLobby(principal);
-        Game game = lobby.startGame();
-
-        logger.info("Game {} successfully started", game.getId());
-        template.convertAndSend("/topic/lobby/" + lobby.getId() + "/started", "");
-    }
-
-    private Lobby getOwnedLobby(Principal principal) {
-        Lobby lobby = getLobby(principal);
-        if (!lobby.isOwner(principal.getName())) {
-            throw new PlayerIsNotOwnerException(principal.getName());
-        }
-        return lobby;
-    }
-
-    private Lobby getLobby(Principal principal) {
-        Lobby lobby = getPlayer(principal).getLobby();
-        if (lobby == null) {
-            throw new PlayerNotInLobbyException(principal.getName());
-        }
-        return lobby;
-    }
-
-    private Player getPlayer(Principal principal) {
-        return playerRepository.find(principal.getName());
-    }
-
-    static class PlayerNotInLobbyException extends ApiMisuseException {
-        PlayerNotInLobbyException(String username) {
-            super("User " + username + " is not in a lobby, create or join a game first");
-        }
-    }
-
-    static class PlayerIsNotOwnerException extends ApiMisuseException {
-        PlayerIsNotOwnerException(String username) {
-            super("User " + username + " does not own the lobby he's in");
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/doc/Documentation.java b/backend/src/main/java/org/luxons/sevenwonders/doc/Documentation.java
deleted file mode 100644
index e27bc2ff..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/doc/Documentation.java
+++ /dev/null
@@ -1,6 +0,0 @@
-package org.luxons.sevenwonders.doc;
-
-public class Documentation {
-
-    public static final String GROUP_ACTIONS = "Actions";
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/ApiMisuseException.java b/backend/src/main/java/org/luxons/sevenwonders/errors/ApiMisuseException.java
deleted file mode 100644
index 0d7d1a82..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/ApiMisuseException.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package org.luxons.sevenwonders.errors;
-
-public class ApiMisuseException extends RuntimeException {
-
-    public ApiMisuseException(String message) {
-        super(message);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java b/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java
deleted file mode 100644
index 16a40046..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/ErrorType.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package org.luxons.sevenwonders.errors;
-
-enum ErrorType {
-    USER_INPUT,
-    VALIDATION,
-    CLIENT,
-    SERVER
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/ExceptionHandler.java b/backend/src/main/java/org/luxons/sevenwonders/errors/ExceptionHandler.java
deleted file mode 100644
index 628da4f8..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/ExceptionHandler.java
+++ /dev/null
@@ -1,81 +0,0 @@
-package org.luxons.sevenwonders.errors;
-
-import java.util.List;
-import java.util.Locale;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.MessageSource;
-import org.springframework.messaging.converter.MessageConversionException;
-import org.springframework.messaging.handler.annotation.MessageExceptionHandler;
-import org.springframework.messaging.handler.annotation.support.MethodArgumentNotValidException;
-import org.springframework.messaging.simp.annotation.SendToUser;
-import org.springframework.validation.BindingResult;
-import org.springframework.validation.ObjectError;
-import org.springframework.web.bind.annotation.ControllerAdvice;
-
-@ControllerAdvice
-public class ExceptionHandler {
-
-    private static final Logger logger = LoggerFactory.getLogger(ExceptionHandler.class);
-
-    private static final String ERROR_CODE_VALIDATION = "INVALID_DATA";
-
-    private static final String ERROR_CODE_CONVERSION = "INVALID_MESSAGE_FORMAT";
-
-    private static final String ERROR_MSG_VALIDATION = "Invalid input data";
-
-    private static final String ERROR_MSG_CONVERSION = "Invalid input format";
-
-    private final MessageSource messageSource;
-
-    @Autowired
-    public ExceptionHandler(MessageSource messageSource) {
-        this.messageSource = messageSource;
-    }
-
-    @MessageExceptionHandler
-    @SendToUser("/queue/errors")
-    public UIError handleUserInputError(UserInputException exception) {
-        logger.error("Incorrect user input: " + exception.getMessage());
-        String messageKey = exception.getMessageResourceKey();
-        String message = messageSource.getMessage(messageKey, exception.getParams(), messageKey, Locale.US);
-        return new UIError(messageKey, message, ErrorType.USER_INPUT);
-    }
-
-    @MessageExceptionHandler
-    @SendToUser("/queue/errors")
-    public UIError handleValidationError(MethodArgumentNotValidException exception) {
-        logger.error("Invalid input", exception);
-        UIError uiError = new UIError(ERROR_CODE_VALIDATION, ERROR_MSG_VALIDATION, ErrorType.VALIDATION);
-
-        BindingResult result = exception.getBindingResult();
-        if (result != null) {
-            List<ObjectError> errors = result.getAllErrors();
-            uiError.addDetails(errors);
-        }
-        return uiError;
-    }
-
-    @MessageExceptionHandler
-    @SendToUser("/queue/errors")
-    public UIError handleConversionError(MessageConversionException exception) {
-        logger.error("Error interpreting the message", exception);
-        return new UIError(ERROR_CODE_CONVERSION, ERROR_MSG_CONVERSION, ErrorType.VALIDATION);
-    }
-
-    @MessageExceptionHandler
-    @SendToUser("/queue/errors")
-    public UIError handleApiError(ApiMisuseException exception) {
-        logger.error("Invalid API input", exception);
-        return new UIError(exception.getClass().getSimpleName(), exception.getMessage(), ErrorType.CLIENT);
-    }
-
-    @MessageExceptionHandler
-    @SendToUser("/queue/errors")
-    public UIError handleUnexpectedInternalError(Throwable exception) {
-        logger.error("Uncaught exception thrown during message handling", exception);
-        return new UIError(exception.getClass().getSimpleName(), exception.getMessage(), ErrorType.SERVER);
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java b/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java
deleted file mode 100644
index fbc1ee1d..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/UIError.java
+++ /dev/null
@@ -1,54 +0,0 @@
-package org.luxons.sevenwonders.errors;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.springframework.validation.FieldError;
-import org.springframework.validation.ObjectError;
-
-public class UIError {
-
-    private final String code;
-
-    private final String message;
-
-    private final ErrorType type;
-
-    private List<UIErrorDetail> details = new ArrayList<>();
-
-    UIError(String code, String message, ErrorType type) {
-        this.code = code;
-        this.message = message;
-        this.type = type;
-    }
-
-    public String getCode() {
-        return code;
-    }
-
-    public String getMessage() {
-        return message;
-    }
-
-    public ErrorType getType() {
-        return type;
-    }
-
-    public List<UIErrorDetail> getDetails() {
-        return details;
-    }
-
-    void addDetails(List<ObjectError> objectErrors) {
-        for (ObjectError objectError : objectErrors) {
-            this.details.add(convertError(objectError));
-        }
-    }
-
-    private UIErrorDetail convertError(ObjectError objectError) {
-        if (objectError instanceof FieldError) {
-            return new UIErrorDetail((FieldError) objectError);
-        } else {
-            return new UIErrorDetail(objectError);
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/UIErrorDetail.java b/backend/src/main/java/org/luxons/sevenwonders/errors/UIErrorDetail.java
deleted file mode 100644
index dc4250bb..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/UIErrorDetail.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package org.luxons.sevenwonders.errors;
-
-import org.springframework.validation.FieldError;
-import org.springframework.validation.ObjectError;
-
-class UIErrorDetail {
-
-    private final Object rejectedValue;
-
-    private final String path;
-
-    private final String message;
-
-    UIErrorDetail(FieldError error) {
-        rejectedValue = error.getRejectedValue();
-        path = error.getObjectName() + '.' + error.getField();
-        message = "Invalid value for field '" + error.getField() + "': " + error.getDefaultMessage();
-    }
-
-    UIErrorDetail(ObjectError error) {
-        rejectedValue = null;
-        path = error.getObjectName();
-        message = "Invalid value for object '" + error.getObjectName() + "': " + error.getDefaultMessage();
-    }
-
-    public Object getRejectedValue() {
-        return rejectedValue;
-    }
-
-    public String getPath() {
-        return path;
-    }
-
-    public String getMessage() {
-        return message;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/errors/UserInputException.java b/backend/src/main/java/org/luxons/sevenwonders/errors/UserInputException.java
deleted file mode 100644
index 4033a696..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/errors/UserInputException.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package org.luxons.sevenwonders.errors;
-
-public class UserInputException extends RuntimeException {
-
-    private final String messageResourceKey;
-
-    private final Object[] params;
-
-    public UserInputException(String messageResourceKey, Object... params) {
-        this.messageResourceKey = messageResourceKey;
-        this.params = params;
-    }
-
-    String getMessageResourceKey() {
-        return messageResourceKey;
-    }
-
-    Object[] getParams() {
-        return params;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/lobby/Lobby.java b/backend/src/main/java/org/luxons/sevenwonders/lobby/Lobby.java
deleted file mode 100644
index 1ddde0d7..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/lobby/Lobby.java
+++ /dev/null
@@ -1,168 +0,0 @@
-package org.luxons.sevenwonders.lobby;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.luxons.sevenwonders.game.Game;
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.game.data.GameDefinition;
-
-public class Lobby {
-
-    private final long id;
-
-    private final String name;
-
-    private final Player owner;
-
-    private final transient GameDefinition gameDefinition;
-
-    private final List<Player> players;
-
-    private CustomizableSettings settings;
-
-    private State state = State.LOBBY;
-
-    public Lobby(long id, String name, Player owner, GameDefinition gameDefinition) {
-        this.id = id;
-        this.name = name;
-        this.owner = owner;
-        this.gameDefinition = gameDefinition;
-        this.players = new ArrayList<>(gameDefinition.getMinPlayers());
-        this.settings = new CustomizableSettings();
-        addPlayer(owner);
-    }
-
-    public long getId() {
-        return id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public String getOwner() {
-        return owner.getUsername();
-    }
-
-    public List<Player> getPlayers() {
-        return players;
-    }
-
-    public CustomizableSettings getSettings() {
-        return settings;
-    }
-
-    public void setSettings(CustomizableSettings settings) {
-        this.settings = settings;
-    }
-
-    public State getState() {
-        return state;
-    }
-
-    public synchronized void addPlayer(Player player) throws GameAlreadyStartedException, PlayerOverflowException {
-        if (hasStarted()) {
-            throw new GameAlreadyStartedException(name);
-        }
-        if (maxPlayersReached()) {
-            throw new PlayerOverflowException(gameDefinition.getMaxPlayers());
-        }
-        if (playerNameAlreadyUsed(player.getDisplayName())) {
-            throw new PlayerNameAlreadyUsedException(player.getDisplayName(), name);
-        }
-        player.setIndex(players.size());
-        player.setLobby(this);
-        players.add(player);
-    }
-
-    private boolean hasStarted() {
-        return state != State.LOBBY;
-    }
-
-    private boolean maxPlayersReached() {
-        return players.size() >= gameDefinition.getMaxPlayers();
-    }
-
-    private boolean playerNameAlreadyUsed(String name) {
-        return players.stream().anyMatch(p -> p.getDisplayName().equals(name));
-    }
-
-    public synchronized Game startGame() throws PlayerUnderflowException {
-        if (!hasEnoughPlayers()) {
-            throw new PlayerUnderflowException(gameDefinition.getMinPlayers());
-        }
-        state = State.PLAYING;
-        Game game = gameDefinition.initGame(id, settings, players.size());
-        players.forEach(p -> p.setGame(game));
-        return game;
-    }
-
-    private boolean hasEnoughPlayers() {
-        return players.size() >= gameDefinition.getMinPlayers();
-    }
-
-    public void reorderPlayers(List<String> orderedUsernames) throws UnknownPlayerException {
-        List<Player> formerList = new ArrayList<>(players);
-        players.clear();
-        for (int i = 0; i < orderedUsernames.size(); i++) {
-            Player player = getPlayer(formerList, orderedUsernames.get(i));
-            players.add(player);
-            player.setIndex(i);
-        }
-    }
-
-    private static Player getPlayer(List<Player> players, String username) throws UnknownPlayerException {
-        return players.stream()
-                      .filter(p -> p.getUsername().equals(username))
-                      .findAny()
-                      .orElseThrow(() -> new UnknownPlayerException(username));
-    }
-
-    public boolean isOwner(String username) {
-        return owner.getUsername().equals(username);
-    }
-
-    public boolean containsUser(String username) {
-        return players.stream().anyMatch(p -> p.getUsername().equals(username));
-    }
-
-    public Player removePlayer(String username) throws UnknownPlayerException {
-        Player player = getPlayer(players, username);
-        players.remove(player);
-        player.setIndex(-1);
-        player.setLobby(null);
-        player.setGame(null);
-        return player;
-    }
-
-    static class GameAlreadyStartedException extends IllegalStateException {
-        GameAlreadyStartedException(String name) {
-            super(String.format("Game '%s' has already started", name));
-        }
-    }
-
-    static class PlayerOverflowException extends IllegalStateException {
-        PlayerOverflowException(int max) {
-            super(String.format("Maximum %d players allowed", max));
-        }
-    }
-
-    static class PlayerUnderflowException extends IllegalStateException {
-        PlayerUnderflowException(int min) {
-            super(String.format("Minimum %d players required to start a game", min));
-        }
-    }
-
-    static class PlayerNameAlreadyUsedException extends IllegalStateException {
-        PlayerNameAlreadyUsedException(String displayName, String gameName) {
-            super(String.format("Name '%s' is already used by a player in game '%s'", displayName, gameName));
-        }
-    }
-
-    static class UnknownPlayerException extends IllegalStateException {
-        UnknownPlayerException(String username) {
-            super(String.format("Unknown player '%s'", username));
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java b/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java
deleted file mode 100644
index 496e1e67..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/lobby/Player.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package org.luxons.sevenwonders.lobby;
-
-import org.luxons.sevenwonders.game.Game;
-
-import com.fasterxml.jackson.annotation.JsonIgnore;
-
-public class Player {
-
-    private final String username;
-
-    private String displayName;
-
-    private int index;
-
-    private boolean ready;
-
-    private transient Lobby lobby;
-
-    private transient Game game;
-
-    public Player(String username, String displayName) {
-        this.username = username;
-        this.displayName = displayName;
-    }
-
-    public String getUsername() {
-        return username;
-    }
-
-    public String getDisplayName() {
-        return displayName;
-    }
-
-    public void setDisplayName(String displayName) {
-        this.displayName = displayName;
-    }
-
-    public int getIndex() {
-        return index;
-    }
-
-    public void setIndex(int index) {
-        this.index = index;
-    }
-
-    public boolean isReady() {
-        return ready;
-    }
-
-    public void setReady(boolean ready) {
-        this.ready = ready;
-    }
-
-    @JsonIgnore
-    public Lobby getLobby() {
-        return lobby;
-    }
-
-    public void setLobby(Lobby lobby) {
-        this.lobby = lobby;
-    }
-
-    @JsonIgnore
-    public Game getGame() {
-        return game;
-    }
-
-    public void setGame(Game game) {
-        this.game = game;
-    }
-
-    @Override
-    public String toString() {
-        return "'" + displayName + "' (" + username + ")";
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/lobby/State.java b/backend/src/main/java/org/luxons/sevenwonders/lobby/State.java
deleted file mode 100644
index 17f3b101..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/lobby/State.java
+++ /dev/null
@@ -1,6 +0,0 @@
-package org.luxons.sevenwonders.lobby;
-
-public enum State {
-    LOBBY,
-    PLAYING
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java b/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java
deleted file mode 100644
index 5a122274..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/output/PreparedCard.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.luxons.sevenwonders.output;
-
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.lobby.Player;
-
-public class PreparedCard {
-
-    private final Player player;
-
-    private final CardBack cardBack;
-
-    public PreparedCard(Player player, CardBack cardBack) {
-        this.player = player;
-        this.cardBack = cardBack;
-    }
-
-    public Player getPlayer() {
-        return player;
-    }
-
-    public CardBack getCardBack() {
-        return cardBack;
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java b/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
deleted file mode 100644
index b1b11c82..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/repositories/LobbyRepository.java
+++ /dev/null
@@ -1,59 +0,0 @@
-package org.luxons.sevenwonders.repositories;
-
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.data.GameDefinitionLoader;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Repository;
-
-@Repository
-public class LobbyRepository {
-
-    private final GameDefinitionLoader gameDefinitionLoader;
-
-    private Map<Long, Lobby> lobbies = new HashMap<>();
-
-    private long lastGameId = 0;
-
-    @Autowired
-    public LobbyRepository() {
-        this.gameDefinitionLoader = new GameDefinitionLoader();
-    }
-
-    public Collection<Lobby> list() {
-        return lobbies.values();
-    }
-
-    public Lobby create(String gameName, Player owner) {
-        long id = lastGameId++;
-        Lobby lobby = new Lobby(id, gameName, owner, gameDefinitionLoader.getGameDefinition());
-        lobbies.put(id, lobby);
-        return lobby;
-    }
-
-    public Lobby find(long lobbyId) throws LobbyNotFoundException {
-        Lobby lobby = lobbies.get(lobbyId);
-        if (lobby == null) {
-            throw new LobbyNotFoundException(lobbyId);
-        }
-        return lobby;
-    }
-
-    public Lobby remove(long lobbyId) throws LobbyNotFoundException {
-        Lobby lobby = lobbies.remove(lobbyId);
-        if (lobby == null) {
-            throw new LobbyNotFoundException(lobbyId);
-        }
-        return lobby;
-    }
-
-    public static class LobbyNotFoundException extends RuntimeException {
-        LobbyNotFoundException(long id) {
-            super("Lobby not found for id '" + id + "'");
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/repositories/PlayerRepository.java b/backend/src/main/java/org/luxons/sevenwonders/repositories/PlayerRepository.java
deleted file mode 100644
index 62c827db..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/repositories/PlayerRepository.java
+++ /dev/null
@@ -1,60 +0,0 @@
-package org.luxons.sevenwonders.repositories;
-
-import java.util.HashMap;
-import java.util.Map;
-
-import org.luxons.sevenwonders.errors.ApiMisuseException;
-import org.luxons.sevenwonders.lobby.Player;
-import org.springframework.stereotype.Repository;
-
-@Repository
-public class PlayerRepository {
-
-    private Map<String, Player> players = new HashMap<>();
-
-    public boolean contains(String username) {
-        return players.containsKey(username);
-    }
-
-    public Player createOrUpdate(String username, String displayName) {
-        if (players.containsKey(username)) {
-            return update(username, displayName);
-        } else {
-            return create(username, displayName);
-        }
-    }
-
-    private Player create(String username, String displayName) {
-        Player player = new Player(username, displayName);
-        players.put(username, player);
-        return player;
-    }
-
-    private Player update(String username, String displayName) throws PlayerNotFoundException {
-        Player player = find(username);
-        player.setDisplayName(displayName);
-        return player;
-    }
-
-    public Player find(String username) throws PlayerNotFoundException {
-        Player player = players.get(username);
-        if (player == null) {
-            throw new PlayerNotFoundException(username);
-        }
-        return player;
-    }
-
-    public Player remove(String username) {
-        Player player = players.remove(username);
-        if (player == null) {
-            throw new PlayerNotFoundException(username);
-        }
-        return player;
-    }
-
-    public static class PlayerNotFoundException extends ApiMisuseException {
-        PlayerNotFoundException(String username) {
-            super("Player '" + username + "' doesn't exist");
-        }
-    }
-}
diff --git a/backend/src/main/java/org/luxons/sevenwonders/validation/DestinationAccessValidator.java b/backend/src/main/java/org/luxons/sevenwonders/validation/DestinationAccessValidator.java
deleted file mode 100644
index cd17b0a5..00000000
--- a/backend/src/main/java/org/luxons/sevenwonders/validation/DestinationAccessValidator.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package org.luxons.sevenwonders.validation;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.repositories.LobbyRepository;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Component;
-
-@Component
-public class DestinationAccessValidator {
-
-    private static final Pattern lobbyDestination = Pattern.compile(".*?/lobby/(?<id>\\d+?)(/.*)?");
-
-    private static final Pattern gameDestination = Pattern.compile(".*?/game/(?<id>\\d+?)(/.*)?");
-
-    private final LobbyRepository lobbyRepository;
-
-    @Autowired
-    public DestinationAccessValidator(LobbyRepository lobbyRepository) {
-        this.lobbyRepository = lobbyRepository;
-    }
-
-    public boolean hasAccess(String username, String destination) {
-        if (username == null) {
-            // unnamed user cannot belong to anything
-            return false;
-        }
-        if (hasForbiddenGameReference(username, destination)) {
-            return false;
-        }
-        if (hasForbiddenLobbyReference(username, destination)) {
-            return false;
-        }
-        return true;
-    }
-
-    private boolean hasForbiddenGameReference(String username, String destination) {
-        Matcher gameMatcher = gameDestination.matcher(destination);
-        if (!gameMatcher.matches()) {
-            return false; // no game reference is always OK
-        }
-        int gameId = extractId(gameMatcher);
-        return !isUserInLobby(username, gameId);
-    }
-
-    private boolean hasForbiddenLobbyReference(String username, String destination) {
-        Matcher lobbyMatcher = lobbyDestination.matcher(destination);
-        if (!lobbyMatcher.matches()) {
-            return false; // no lobby reference is always OK
-        }
-        int lobbyId = extractId(lobbyMatcher);
-        return !isUserInLobby(username, lobbyId);
-    }
-
-    private boolean isUserInLobby(String username, int lobbyId) {
-        Lobby lobby = lobbyRepository.find(lobbyId);
-        return lobby.containsUser(username);
-    }
-
-    private static int extractId(Matcher matcher) {
-        String id = matcher.group("id");
-        return Integer.parseInt(id);
-    }
-}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/SevenWonders.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/SevenWonders.kt
new file mode 100644
index 00000000..04f03956
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/SevenWonders.kt
@@ -0,0 +1,13 @@
+package org.luxons.sevenwonders
+
+import org.hildan.livedoc.spring.boot.starter.EnableJSONDoc
+import org.springframework.boot.autoconfigure.SpringBootApplication
+import org.springframework.boot.runApplication
+
+@SpringBootApplication
+@EnableJSONDoc
+class SevenWonders
+
+fun main(args: Array<String>) {
+    runApplication<SevenWonders>(*args)
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/actions/ChooseNameAction.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/ChooseNameAction.kt
new file mode 100644
index 00000000..ab444780
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/ChooseNameAction.kt
@@ -0,0 +1,19 @@
+package org.luxons.sevenwonders.actions
+
+import org.hildan.livedoc.core.annotations.types.ApiType
+import org.hildan.livedoc.core.annotations.types.ApiTypeProperty
+import org.luxons.sevenwonders.doc.Documentation
+import javax.validation.constraints.Size
+
+/**
+ * The action to choose the player's name. This is the first action that should be called.
+ */
+@ApiType(group = Documentation.GROUP_ACTIONS)
+class ChooseNameAction(
+    /**
+     * The display name of the player. May contain spaces and special characters.
+     */
+    @Size(min = 2, max = 20)
+    @ApiTypeProperty(required = true)
+    val playerName: String
+)
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/actions/CreateGameAction.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/CreateGameAction.kt
new file mode 100644
index 00000000..fbe598f2
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/CreateGameAction.kt
@@ -0,0 +1,21 @@
+package org.luxons.sevenwonders.actions
+
+import org.hildan.livedoc.core.annotations.types.ApiType
+import org.hildan.livedoc.core.annotations.types.ApiTypeProperty
+import org.luxons.sevenwonders.doc.Documentation
+import javax.validation.constraints.Size
+
+/**
+ * The action to create a game.
+ */
+@ApiType(group = Documentation.GROUP_ACTIONS)
+class CreateGameAction(
+    /**
+     * The name of the game to create.
+     */
+    @Size(min = 2, max = 30)
+    @ApiTypeProperty(required = true)
+    val gameName: String
+)
+
+
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/actions/JoinGameAction.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/JoinGameAction.kt
new file mode 100644
index 00000000..002309b3
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/JoinGameAction.kt
@@ -0,0 +1,17 @@
+package org.luxons.sevenwonders.actions
+
+import org.hildan.livedoc.core.annotations.types.ApiType
+import org.hildan.livedoc.core.annotations.types.ApiTypeProperty
+import org.luxons.sevenwonders.doc.Documentation
+
+/**
+ * The action to join a game.
+ */
+@ApiType(group = Documentation.GROUP_ACTIONS)
+class JoinGameAction(
+    /**
+     * The ID of the game to join.
+     */
+    @ApiTypeProperty(required = true)
+    val gameId: Long
+)
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/actions/PrepareMoveAction.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/PrepareMoveAction.kt
new file mode 100644
index 00000000..6b39c486
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/PrepareMoveAction.kt
@@ -0,0 +1,18 @@
+package org.luxons.sevenwonders.actions
+
+import org.hildan.livedoc.core.annotations.types.ApiType
+import org.hildan.livedoc.core.annotations.types.ApiTypeProperty
+import org.luxons.sevenwonders.doc.Documentation
+import org.luxons.sevenwonders.game.api.PlayerMove
+
+/**
+ * The action to prepare the next move during a game.
+ */
+@ApiType(group = Documentation.GROUP_ACTIONS)
+class PrepareMoveAction(
+    /**
+     * The move to prepare.
+     */
+    @ApiTypeProperty(required = true)
+    val move: PlayerMove
+)
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/actions/ReorderPlayersAction.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/ReorderPlayersAction.kt
new file mode 100644
index 00000000..79a32137
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/ReorderPlayersAction.kt
@@ -0,0 +1,18 @@
+package org.luxons.sevenwonders.actions
+
+import org.hildan.livedoc.core.annotations.types.ApiType
+import org.hildan.livedoc.core.annotations.types.ApiTypeProperty
+import org.luxons.sevenwonders.doc.Documentation
+
+/**
+ * The action to update the order of the players around the table. Can only be called in the lobby by the owner of the
+ * game.
+ */
+@ApiType(group = Documentation.GROUP_ACTIONS)
+class ReorderPlayersAction(
+    /**
+     * The list of usernames of the players, in the new order.
+     */
+    @ApiTypeProperty(required = true)
+    val orderedPlayers: List<String>
+)
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/actions/UpdateSettingsAction.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/UpdateSettingsAction.kt
new file mode 100644
index 00000000..d13e5b45
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/actions/UpdateSettingsAction.kt
@@ -0,0 +1,18 @@
+package org.luxons.sevenwonders.actions
+
+import org.hildan.livedoc.core.annotations.types.ApiType
+import org.hildan.livedoc.core.annotations.types.ApiTypeProperty
+import org.luxons.sevenwonders.doc.Documentation
+import org.luxons.sevenwonders.game.api.CustomizableSettings
+
+/**
+ * The action to update the settings of the game. Can only be called in the lobby by the owner of the game.
+ */
+@ApiType(group = Documentation.GROUP_ACTIONS)
+class UpdateSettingsAction(
+    /**
+     * The new values for the settings.
+     */
+    @ApiTypeProperty(required = true)
+    val settings: CustomizableSettings
+)
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/config/AnonymousUsersHandshakeHandler.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/config/AnonymousUsersHandshakeHandler.kt
new file mode 100644
index 00000000..db707d1b
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/config/AnonymousUsersHandshakeHandler.kt
@@ -0,0 +1,27 @@
+package org.luxons.sevenwonders.config
+
+import org.springframework.http.server.ServerHttpRequest
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken
+import org.springframework.web.socket.WebSocketHandler
+import org.springframework.web.socket.server.support.DefaultHandshakeHandler
+import java.security.Principal
+
+/**
+ * Generates [Principal] objects for anonymous users in the form "playerX", where X is an auto-incremented number.
+ */
+internal class AnonymousUsersHandshakeHandler : DefaultHandshakeHandler() {
+
+    private var playerId = 0
+
+    override fun determineUser(
+        request: ServerHttpRequest,
+        wsHandler: WebSocketHandler,
+        attributes: Map<String, Any>
+    ): Principal? {
+        var p = super.determineUser(request, wsHandler, attributes)
+        if (p == null) {
+            p = UsernamePasswordAuthenticationToken("player" + playerId++, null)
+        }
+        return p
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/config/TopicSubscriptionInterceptor.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/config/TopicSubscriptionInterceptor.kt
new file mode 100644
index 00000000..f4c55c2c
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/config/TopicSubscriptionInterceptor.kt
@@ -0,0 +1,38 @@
+package org.luxons.sevenwonders.config
+
+import org.luxons.sevenwonders.validation.DestinationAccessValidator
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.messaging.Message
+import org.springframework.messaging.MessageChannel
+import org.springframework.messaging.simp.stomp.StompCommand
+import org.springframework.messaging.simp.stomp.StompHeaderAccessor
+import org.springframework.messaging.support.ChannelInterceptor
+import org.springframework.stereotype.Component
+
+@Component
+class TopicSubscriptionInterceptor @Autowired constructor(
+    private val destinationAccessValidator: DestinationAccessValidator
+) : ChannelInterceptor {
+
+    override fun preSend(message: Message<*>, channel: MessageChannel): Message<*>? {
+        val headerAccessor = StompHeaderAccessor.wrap(message)
+        if (StompCommand.SUBSCRIBE == headerAccessor.command) {
+            val username = headerAccessor.user!!.name
+            val destination = headerAccessor.destination!!
+            if (!destinationAccessValidator.hasAccess(username, destination)) {
+                sendForbiddenSubscriptionError(username, destination)
+                return null
+            }
+        }
+        return message
+    }
+
+    private fun sendForbiddenSubscriptionError(username: String, destination: String?) {
+        logger.error(String.format("Player '%s' is not allowed to access %s", username, destination))
+    }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(TopicSubscriptionInterceptor::class.java)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/config/WebSecurityConfig.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/config/WebSecurityConfig.kt
new file mode 100644
index 00000000..06b2bc90
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/config/WebSecurityConfig.kt
@@ -0,0 +1,12 @@
+package org.luxons.sevenwonders.config
+
+import org.springframework.context.annotation.Configuration
+import org.springframework.security.config.annotation.web.builders.HttpSecurity
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter
+
+@Configuration
+class WebSecurityConfig : WebSecurityConfigurerAdapter() {
+
+    // this disables default authentication settings
+    override fun configure(httpSecurity: HttpSecurity) = Unit
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/config/WebSocketConfig.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/config/WebSocketConfig.kt
new file mode 100644
index 00000000..bebb3233
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/config/WebSocketConfig.kt
@@ -0,0 +1,42 @@
+package org.luxons.sevenwonders.config
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.messaging.simp.config.ChannelRegistration
+import org.springframework.messaging.simp.config.MessageBrokerRegistry
+import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker
+import org.springframework.web.socket.config.annotation.StompEndpointRegistry
+import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer
+import org.springframework.web.socket.server.support.DefaultHandshakeHandler
+
+@Configuration
+@EnableWebSocketMessageBroker
+class WebSocketConfig @Autowired constructor(private val topicSubscriptionInterceptor: TopicSubscriptionInterceptor) :
+    WebSocketMessageBrokerConfigurer {
+
+    override fun configureMessageBroker(config: MessageBrokerRegistry) {
+        // prefixes for all subscriptions
+        config.enableSimpleBroker("/queue", "/topic")
+        config.setUserDestinationPrefix("/user")
+
+        // /app for normal calls, /topic for subscription events
+        config.setApplicationDestinationPrefixes("/app", "/topic")
+    }
+
+    override fun registerStompEndpoints(registry: StompEndpointRegistry) {
+        registry.addEndpoint("/seven-wonders-websocket")
+            .setHandshakeHandler(handshakeHandler())
+            .setAllowedOrigins("http://localhost:3000") // to allow frontend server proxy requests in dev mode
+            .withSockJS()
+    }
+
+    @Bean
+    fun handshakeHandler(): DefaultHandshakeHandler {
+        return AnonymousUsersHandshakeHandler()
+    }
+
+    override fun configureClientInboundChannel(registration: ChannelRegistration) {
+        registration.interceptors(topicSubscriptionInterceptor)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/GameBrowserController.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/GameBrowserController.kt
new file mode 100644
index 00000000..b8e4e732
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/GameBrowserController.kt
@@ -0,0 +1,109 @@
+package org.luxons.sevenwonders.controllers
+
+import org.hildan.livedoc.core.annotations.Api
+import org.luxons.sevenwonders.actions.CreateGameAction
+import org.luxons.sevenwonders.actions.JoinGameAction
+import org.luxons.sevenwonders.errors.ApiMisuseException
+import org.luxons.sevenwonders.lobby.Lobby
+import org.luxons.sevenwonders.repositories.LobbyRepository
+import org.luxons.sevenwonders.repositories.PlayerRepository
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.messaging.handler.annotation.MessageMapping
+import org.springframework.messaging.simp.SimpMessagingTemplate
+import org.springframework.messaging.simp.annotation.SendToUser
+import org.springframework.messaging.simp.annotation.SubscribeMapping
+import org.springframework.stereotype.Controller
+import org.springframework.validation.annotation.Validated
+import java.security.Principal
+
+/**
+ * This is the place where the player looks for a game.
+ */
+@Api(name = "GameBrowser")
+@Controller
+class GameBrowserController @Autowired constructor(
+    private val lobbyController: LobbyController,
+    private val lobbyRepository: LobbyRepository,
+    private val playerRepository: PlayerRepository,
+    private val template: SimpMessagingTemplate
+) {
+
+    /**
+     * Gets the created or updated games. The list of existing games is received on this topic at once upon
+     * subscription, and then each time the list changes.
+     *
+     * @param principal the connected user's information
+     *
+     * @return the current list of [Lobby]s
+     */
+    @SubscribeMapping("/games") // prefix /topic not shown
+    fun listGames(principal: Principal): Collection<Lobby> {
+        logger.info("Player '{}' subscribed to /topic/games", principal.name)
+        return lobbyRepository.list()
+    }
+
+    /**
+     * Creates a new [Lobby].
+     *
+     * @param action the action to create the game
+     * @param principal the connected user's information
+     *
+     * @return the newly created [Lobby]
+     */
+    @MessageMapping("/lobby/create")
+    @SendToUser("/queue/lobby/joined")
+    fun createGame(@Validated action: CreateGameAction, principal: Principal): Lobby {
+        checkThatUserIsNotInAGame(principal, "cannot create another game")
+
+        val gameOwner = playerRepository.find(principal.name)
+        val lobby = lobbyRepository.create(action.gameName, gameOwner)
+
+        logger.info(
+            "Game '{}' ({}) created by {} ({})", lobby.name, lobby.id, gameOwner.displayName, gameOwner.username
+        )
+
+        // notify everyone that a new game exists
+        template.convertAndSend("/topic/games", listOf(lobby))
+        return lobby
+    }
+
+    /**
+     * Joins an existing [Lobby].
+     *
+     * @param action the action to join the game
+     * @param principal the connected user's information
+     *
+     * @return the [Lobby] that has just been joined
+     */
+    @MessageMapping("/lobby/join")
+    @SendToUser("/queue/lobby/joined")
+    fun joinGame(@Validated action: JoinGameAction, principal: Principal): Lobby {
+        checkThatUserIsNotInAGame(principal, "cannot join another game")
+
+        val lobby = lobbyRepository.find(action.gameId!!)
+        val newPlayer = playerRepository.find(principal.name)
+        lobby.addPlayer(newPlayer)
+
+        logger.info(
+            "Player '{}' ({}) joined game {}", newPlayer.displayName, newPlayer.username, lobby.name
+        )
+        lobbyController.sendLobbyUpdateToPlayers(lobby)
+        return lobby
+    }
+
+    private fun checkThatUserIsNotInAGame(principal: Principal, impossibleActionDescription: String) {
+        val player = playerRepository.find(principal.name)
+        if (player.isInLobby || player.isInGame) {
+            throw UserAlreadyInGameException(player.lobby.name, impossibleActionDescription)
+        }
+    }
+
+    internal class UserAlreadyInGameException(gameName: String, impossibleActionDescription: String) :
+        ApiMisuseException("Client already in game '$gameName', $impossibleActionDescription")
+
+    companion object {
+
+        private val logger = LoggerFactory.getLogger(GameBrowserController::class.java)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/GameController.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/GameController.kt
new file mode 100644
index 00000000..e05bf319
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/GameController.kt
@@ -0,0 +1,99 @@
+package org.luxons.sevenwonders.controllers
+
+import org.hildan.livedoc.core.annotations.Api
+import org.luxons.sevenwonders.actions.PrepareMoveAction
+import org.luxons.sevenwonders.game.Game
+import org.luxons.sevenwonders.game.api.Table
+import org.luxons.sevenwonders.lobby.Player
+import org.luxons.sevenwonders.output.PreparedCard
+import org.luxons.sevenwonders.repositories.PlayerRepository
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.messaging.handler.annotation.MessageMapping
+import org.springframework.messaging.simp.SimpMessagingTemplate
+import org.springframework.stereotype.Controller
+import java.security.Principal
+
+/**
+ * This API is for in-game events management.
+ */
+@Api(name = "Game")
+@Controller
+class GameController @Autowired constructor(
+    private val template: SimpMessagingTemplate,
+    private val playerRepository: PlayerRepository
+) {
+    private val Principal.player
+        get() = playerRepository.find(name)
+
+    /**
+     * Notifies the game that the player is ready to receive his hand.
+     *
+     * @param principal
+     * the connected user's information
+     */
+    @MessageMapping("/game/sayReady")
+    fun ready(principal: Principal) {
+        val player = principal.player
+        player.isReady = true
+        val game = player.game
+        logger.info("Game {}: player {} is ready for the next turn", game.id, player)
+
+        val lobby = player.lobby
+        val players = lobby.getPlayers()
+
+        val allReady = players.stream().allMatch { it.isReady }
+        if (allReady) {
+            logger.info("Game {}: all players ready, sending turn info", game.id)
+            players.forEach { it.isReady = false }
+            sendTurnInfo(players, game)
+        } else {
+            sendPlayerReady(game.id, player)
+        }
+    }
+
+    private fun sendTurnInfo(players: List<Player>, game: Game) {
+        for (turnInfo in game.getCurrentTurnInfo()) {
+            val player = players[turnInfo.playerIndex]
+            template.convertAndSendToUser(player.username, "/queue/game/turn", turnInfo)
+        }
+    }
+
+    private fun sendPlayerReady(gameId: Long, player: Player) =
+        template.convertAndSend("/topic/game/$gameId/playerReady", player.username)
+
+    /**
+     * Prepares the player's next move. When all players have prepared their moves, all moves are executed.
+     *
+     * @param action
+     * the action to prepare the move
+     * @param principal
+     * the connected user's information
+     */
+    @MessageMapping("/game/prepareMove")
+    fun prepareMove(action: PrepareMoveAction, principal: Principal) {
+        val player = principal.player
+        val game = player.game
+        val preparedCardBack = game.prepareMove(player.index, action.move)
+        val preparedCard = PreparedCard(player, preparedCardBack)
+        logger.info("Game {}: player {} prepared move {}", game.id, principal.name, action.move)
+
+        if (game.allPlayersPreparedTheirMove()) {
+            logger.info("Game {}: all players have prepared their move, executing turn...", game.id)
+            val table = game.playTurn()
+            sendPlayedMoves(game.id, table)
+        } else {
+            sendPreparedCard(game.id, preparedCard)
+        }
+    }
+
+    private fun sendPlayedMoves(gameId: Long, table: Table) =
+        template.convertAndSend("/topic/game/$gameId/tableUpdates", table)
+
+    private fun sendPreparedCard(gameId: Long, preparedCard: PreparedCard) =
+        template.convertAndSend("/topic/game/$gameId/prepared", preparedCard)
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(GameController::class.java)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/HomeController.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/HomeController.kt
new file mode 100644
index 00000000..e658a26b
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/HomeController.kt
@@ -0,0 +1,47 @@
+package org.luxons.sevenwonders.controllers
+
+import org.hildan.livedoc.core.annotations.Api
+import org.luxons.sevenwonders.actions.ChooseNameAction
+import org.luxons.sevenwonders.lobby.Player
+import org.luxons.sevenwonders.repositories.PlayerRepository
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.messaging.handler.annotation.MessageMapping
+import org.springframework.messaging.simp.annotation.SendToUser
+import org.springframework.stereotype.Controller
+import org.springframework.validation.annotation.Validated
+import java.security.Principal
+
+/**
+ * Handles actions in the homepage of the game.
+ */
+@Api(name = "Home")
+@Controller
+class HomeController @Autowired constructor(
+    private val playerRepository: PlayerRepository
+) {
+
+    /**
+     * Creates/updates the player's name (for the user's session).
+     *
+     * @param action
+     * the action to choose the name of the player
+     * @param principal
+     * the connected user's information
+     *
+     * @return the created [Player] object
+     */
+    @MessageMapping("/chooseName")
+    @SendToUser("/queue/nameChoice")
+    fun chooseName(@Validated action: ChooseNameAction, principal: Principal): Player {
+        val username = principal.name
+        val player = playerRepository.createOrUpdate(username, action.playerName)
+
+        logger.info("Player '{}' chose the name '{}'", username, player.displayName)
+        return player
+    }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(HomeController::class.java)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/LobbyController.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/LobbyController.kt
new file mode 100644
index 00000000..3b15d68a
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/controllers/LobbyController.kt
@@ -0,0 +1,106 @@
+package org.luxons.sevenwonders.controllers
+
+import org.hildan.livedoc.core.annotations.Api
+import org.luxons.sevenwonders.actions.ReorderPlayersAction
+import org.luxons.sevenwonders.actions.UpdateSettingsAction
+import org.luxons.sevenwonders.lobby.Lobby
+import org.luxons.sevenwonders.lobby.Player
+import org.luxons.sevenwonders.repositories.LobbyRepository
+import org.luxons.sevenwonders.repositories.PlayerRepository
+import org.slf4j.LoggerFactory
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.messaging.handler.annotation.MessageMapping
+import org.springframework.messaging.simp.SimpMessagingTemplate
+import org.springframework.stereotype.Controller
+import org.springframework.validation.annotation.Validated
+import java.security.Principal
+
+/**
+ * Handles actions in the game's lobby. The lobby is the place where players gather before a game.
+ */
+@Api(name = "Lobby")
+@Controller
+class LobbyController @Autowired constructor(
+    private val lobbyRepository: LobbyRepository,
+    private val playerRepository: PlayerRepository,
+    private val template: SimpMessagingTemplate
+) {
+    private val Principal.player: Player
+        get() = playerRepository.find(name)
+
+    /**
+     * Leaves the current lobby.
+     *
+     * @param principal
+     * the connected user's information
+     */
+    @MessageMapping("/lobby/leave")
+    fun leave(principal: Principal) {
+        val lobby = principal.player.lobby
+        val player = lobby.removePlayer(principal.name)
+        if (lobby.getPlayers().isEmpty()) {
+            lobbyRepository.remove(lobby.id)
+        }
+
+        logger.info("Player {} left game '{}'", player, lobby.name)
+        sendLobbyUpdateToPlayers(lobby)
+    }
+
+    /**
+     * Reorders the players in the current lobby. This can only be done by the lobby's owner.
+     *
+     * @param action
+     * the action to reorder the players
+     * @param principal
+     * the connected user's information
+     */
+    @MessageMapping("/lobby/reorderPlayers")
+    fun reorderPlayers(@Validated action: ReorderPlayersAction, principal: Principal) {
+        val lobby = principal.player.ownedLobby
+        lobby.reorderPlayers(action.orderedPlayers)
+
+        logger.info("Players in game '{}' reordered to {}", lobby.name, action.orderedPlayers)
+        sendLobbyUpdateToPlayers(lobby)
+    }
+
+    /**
+     * Updates the game settings. This can only be done by the lobby's owner.
+     *
+     * @param action
+     * the action to update the settings
+     * @param principal
+     * the connected user's information
+     */
+    @MessageMapping("/lobby/updateSettings")
+    fun updateSettings(@Validated action: UpdateSettingsAction, principal: Principal) {
+        val lobby = principal.player.ownedLobby
+        lobby.settings = action.settings
+
+        logger.info("Updated settings of game '{}'", lobby.name)
+        sendLobbyUpdateToPlayers(lobby)
+    }
+
+    internal fun sendLobbyUpdateToPlayers(lobby: Lobby) {
+        template.convertAndSend("/topic/lobby/" + lobby.id + "/updated", lobby)
+        template.convertAndSend("/topic/games", listOf(lobby))
+    }
+
+    /**
+     * Starts the game.
+     *
+     * @param principal
+     * the connected user's information
+     */
+    @MessageMapping("/lobby/startGame")
+    fun startGame(principal: Principal) {
+        val lobby = principal.player.ownedLobby
+        val game = lobby.startGame()
+
+        logger.info("Game {} successfully started", game.id)
+        template.convertAndSend("/topic/lobby/" + lobby.id + "/started", "")
+    }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(LobbyController::class.java)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/doc/Documentation.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/doc/Documentation.kt
new file mode 100644
index 00000000..3b04356a
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/doc/Documentation.kt
@@ -0,0 +1,6 @@
+package org.luxons.sevenwonders.doc
+
+object Documentation {
+
+    const val GROUP_ACTIONS = "Actions"
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/errors/ErrorDTO.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/errors/ErrorDTO.kt
new file mode 100644
index 00000000..c3eae0b5
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/errors/ErrorDTO.kt
@@ -0,0 +1,29 @@
+package org.luxons.sevenwonders.errors
+
+import org.springframework.validation.FieldError
+import org.springframework.validation.ObjectError
+
+enum class ErrorType {
+    VALIDATION, CLIENT, SERVER
+}
+
+data class ErrorDTO(
+    val code: String,
+    val message: String,
+    val type: ErrorType,
+    val details: List<ValidationErrorDTO> = emptyList()
+)
+
+data class ValidationErrorDTO(
+    val path: String,
+    val message: String,
+    val rejectedValue: Any? = null
+)
+
+fun ObjectError.toDTO() = (this as? FieldError)?.fieldError() ?: objectError()
+
+fun FieldError.fieldError(): ValidationErrorDTO =
+    ValidationErrorDTO("$objectName.$field", "Invalid value for field '$field': $defaultMessage", rejectedValue)
+
+fun ObjectError.objectError(): ValidationErrorDTO =
+    ValidationErrorDTO(objectName, "Invalid value for object '$objectName': $defaultMessage")
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/errors/ExceptionHandler.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/errors/ExceptionHandler.kt
new file mode 100644
index 00000000..76d01f5f
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/errors/ExceptionHandler.kt
@@ -0,0 +1,44 @@
+package org.luxons.sevenwonders.errors
+
+import org.slf4j.LoggerFactory
+import org.springframework.messaging.converter.MessageConversionException
+import org.springframework.messaging.handler.annotation.MessageExceptionHandler
+import org.springframework.messaging.handler.annotation.support.MethodArgumentNotValidException
+import org.springframework.messaging.simp.annotation.SendToUser
+import org.springframework.web.bind.annotation.ControllerAdvice
+
+open class ApiMisuseException(message: String) : RuntimeException(message)
+
+@ControllerAdvice
+@SendToUser("/queue/errors")
+class ExceptionHandler {
+
+    @MessageExceptionHandler
+    fun handleValidationError(exception: MethodArgumentNotValidException): ErrorDTO {
+        logger.error("Invalid input", exception)
+        val validationErrors = exception.bindingResult?.allErrors?.map { it.toDTO() } ?: emptyList()
+        return ErrorDTO("INVALID_DATA", "Invalid input data", ErrorType.VALIDATION, validationErrors)
+    }
+
+    @MessageExceptionHandler
+    fun handleConversionError(exception: MessageConversionException): ErrorDTO {
+        logger.error("Error interpreting the message", exception)
+        return ErrorDTO("INVALID_MESSAGE_FORMAT", "Invalid input format", ErrorType.VALIDATION)
+    }
+
+    @MessageExceptionHandler
+    fun handleApiError(exception: ApiMisuseException): ErrorDTO {
+        logger.error("Invalid API input", exception)
+        return ErrorDTO(exception.javaClass.simpleName, exception.message!!, ErrorType.CLIENT)
+    }
+
+    @MessageExceptionHandler
+    fun handleUnexpectedInternalError(exception: Throwable): ErrorDTO {
+        logger.error("Uncaught exception thrown during message handling", exception)
+        return ErrorDTO(exception.javaClass.simpleName, exception.localizedMessage ?: "", ErrorType.SERVER)
+    }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(ExceptionHandler::class.java)
+    }
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/lobby/Lobby.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/lobby/Lobby.kt
new file mode 100644
index 00000000..aaafd517
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/lobby/Lobby.kt
@@ -0,0 +1,107 @@
+package org.luxons.sevenwonders.lobby
+
+import org.luxons.sevenwonders.game.Game
+import org.luxons.sevenwonders.game.api.CustomizableSettings
+import org.luxons.sevenwonders.game.data.GameDefinition
+import java.util.ArrayList
+
+enum class State {
+    LOBBY, PLAYING
+}
+
+class Lobby(
+    val id: Long,
+    val name: String,
+    private var _owner: Player,
+    @field:Transient private val gameDefinition: GameDefinition
+) {
+    private var players: MutableList<Player> = ArrayList(gameDefinition.maxPlayers)
+
+    var settings: CustomizableSettings = CustomizableSettings()
+
+    var owner = _owner.username
+
+    var state = State.LOBBY
+        private set
+
+    init {
+        addPlayer(_owner)
+    }
+
+    fun getPlayers(): List<Player> = players
+
+    @Synchronized
+    fun addPlayer(player: Player) {
+        if (hasStarted()) {
+            throw GameAlreadyStartedException(name)
+        }
+        if (maxPlayersReached()) {
+            throw PlayerOverflowException(gameDefinition.maxPlayers)
+        }
+        if (playerNameAlreadyUsed(player.displayName)) {
+            throw PlayerNameAlreadyUsedException(player.displayName, name)
+        }
+        player.join(this)
+        players.add(player)
+    }
+
+    private fun hasStarted(): Boolean = state != State.LOBBY
+
+    private fun maxPlayersReached(): Boolean = players.size >= gameDefinition.maxPlayers
+
+    private fun playerNameAlreadyUsed(name: String?): Boolean = players.any { it.displayName == name }
+
+    @Synchronized
+    fun startGame(): Game {
+        if (!hasEnoughPlayers()) {
+            throw PlayerUnderflowException(gameDefinition.minPlayers)
+        }
+        state = State.PLAYING
+        val game = gameDefinition.initGame(id, settings, players.size)
+        players.forEachIndexed { index, player -> player.join(game, index) }
+        return game
+    }
+
+    private fun hasEnoughPlayers(): Boolean = players.size >= gameDefinition.minPlayers
+
+    @Synchronized
+    fun reorderPlayers(orderedUsernames: List<String>) {
+        players = orderedUsernames.map { find(it) }.toMutableList()
+    }
+
+    private fun find(username: String): Player =
+        players.firstOrNull { it.username == username } ?: throw UnknownPlayerException(username)
+
+    @Synchronized
+    fun isOwner(username: String?): Boolean = _owner.username == username
+
+    @Synchronized
+    fun containsUser(username: String): Boolean = players.any { it.username == username }
+
+    @Synchronized
+    fun removePlayer(username: String): Player {
+        val player = find(username)
+        players.remove(player)
+        player.leave()
+
+        if (player == _owner && !players.isEmpty()) {
+            _owner = players[0]
+        }
+        return player
+    }
+
+    internal class GameAlreadyStartedException(name: String) :
+        IllegalStateException("Game '$name' has already started")
+
+    internal class PlayerOverflowException(max: Int) :
+        IllegalStateException("Maximum $max players allowed")
+
+    internal class PlayerUnderflowException(min: Int) :
+        IllegalStateException("Minimum $min players required to start a game")
+
+    internal class PlayerNameAlreadyUsedException(displayName: String, gameName: String) :
+        IllegalStateException("Name '$displayName' is already used by a player in game '$gameName'")
+
+    internal class UnknownPlayerException(username: String) :
+        IllegalStateException("Unknown player '$username'")
+}
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/lobby/Player.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/lobby/Player.kt
new file mode 100644
index 00000000..48a31047
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/lobby/Player.kt
@@ -0,0 +1,70 @@
+package org.luxons.sevenwonders.lobby
+
+import com.fasterxml.jackson.annotation.JsonIgnore
+import org.luxons.sevenwonders.errors.ApiMisuseException
+import org.luxons.sevenwonders.game.Game
+
+class Player(
+    val username: String,
+    var displayName: String
+) {
+    var index: Int = -1
+
+    var isReady: Boolean = false
+
+    val isGameOwner: Boolean
+        get() = _lobby?.isOwner(username) ?: false
+
+    val isInLobby: Boolean
+        get() = _lobby != null
+
+    val isInGame: Boolean
+        get() = _game != null
+
+    @Transient
+    private var _lobby: Lobby? = null
+
+    @get:JsonIgnore
+    val lobby: Lobby
+        get() = _lobby ?: throw PlayerNotInLobbyException(username)
+
+    @get:JsonIgnore
+    val ownedLobby: Lobby
+        get() = if (isGameOwner) lobby else throw PlayerIsNotOwnerException(username)
+
+    @Transient
+    private var _game: Game? = null
+
+    @get:JsonIgnore
+    val game: Game
+        get() = _game ?: throw PlayerNotInGameException(username)
+
+    fun join(lobby: Lobby) {
+        _lobby = lobby
+    }
+
+    fun join(game: Game, index: Int) {
+        _game = game
+        this.index = index
+    }
+
+    fun leave() {
+        _lobby = null
+        _game = null
+        index = -1
+    }
+
+    override fun toString(): String {
+        return "'$displayName' ($username)"
+    }
+}
+
+internal class PlayerNotInLobbyException(username: String) :
+    ApiMisuseException("User $username is not in a lobby, create or join a game first")
+
+internal class PlayerIsNotOwnerException(username: String) :
+    ApiMisuseException("User $username does not own the lobby he's in")
+
+internal class PlayerNotInGameException(username: String) :
+    ApiMisuseException("User $username is not in a game, start a game first")
+
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/output/PreparedCard.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/output/PreparedCard.kt
new file mode 100644
index 00000000..956b1a2c
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/output/PreparedCard.kt
@@ -0,0 +1,6 @@
+package org.luxons.sevenwonders.output
+
+import org.luxons.sevenwonders.game.cards.CardBack
+import org.luxons.sevenwonders.lobby.Player
+
+class PreparedCard(val player: Player, val cardBack: CardBack)
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/repositories/LobbyRepository.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/repositories/LobbyRepository.kt
new file mode 100644
index 00000000..261f723c
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/repositories/LobbyRepository.kt
@@ -0,0 +1,33 @@
+package org.luxons.sevenwonders.repositories
+
+import org.luxons.sevenwonders.game.data.GameDefinitionLoader
+import org.luxons.sevenwonders.lobby.Lobby
+import org.luxons.sevenwonders.lobby.Player
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.stereotype.Repository
+import java.util.HashMap
+
+@Repository
+class LobbyRepository @Autowired constructor() {
+
+    private val gameDefinitionLoader: GameDefinitionLoader = GameDefinitionLoader()
+
+    private val lobbies = HashMap<Long, Lobby>()
+
+    private var lastGameId: Long = 0
+
+    fun list(): Collection<Lobby> = lobbies.values
+
+    fun create(gameName: String, owner: Player): Lobby {
+        val id = lastGameId++
+        val lobby = Lobby(id, gameName, owner, gameDefinitionLoader.gameDefinition)
+        lobbies[id] = lobby
+        return lobby
+    }
+
+    fun find(lobbyId: Long): Lobby = lobbies[lobbyId] ?: throw LobbyNotFoundException(lobbyId)
+
+    fun remove(lobbyId: Long): Lobby = lobbies.remove(lobbyId) ?: throw LobbyNotFoundException(lobbyId)
+}
+
+internal class LobbyNotFoundException(id: Long) : RuntimeException("Lobby not found for id '$id'")
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/repositories/PlayerRepository.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/repositories/PlayerRepository.kt
new file mode 100644
index 00000000..4d552eaa
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/repositories/PlayerRepository.kt
@@ -0,0 +1,41 @@
+package org.luxons.sevenwonders.repositories
+
+import org.luxons.sevenwonders.errors.ApiMisuseException
+import org.luxons.sevenwonders.lobby.Player
+import org.springframework.stereotype.Repository
+import java.util.HashMap
+
+@Repository
+class PlayerRepository {
+
+    private val players = HashMap<String, Player>()
+
+    operator fun contains(username: String): Boolean = players.containsKey(username)
+
+    fun createOrUpdate(username: String, displayName: String): Player {
+        return if (players.containsKey(username)) {
+            update(username, displayName)
+        } else {
+            create(username, displayName)
+        }
+    }
+
+    private fun create(username: String, displayName: String): Player {
+        val player = Player(username, displayName)
+        players[username] = player
+        return player
+    }
+
+    private fun update(username: String, displayName: String): Player {
+        val player = find(username)
+        player.displayName = displayName
+        return player
+    }
+
+    fun find(username: String): Player = players[username] ?: throw PlayerNotFoundException(username)
+
+    fun remove(username: String): Player = players.remove(username) ?: throw PlayerNotFoundException(username)
+}
+
+internal class PlayerNotFoundException(username: String) :
+    ApiMisuseException("Player '$username' doesn't exist")
diff --git a/backend/src/main/kotlin/org/luxons/sevenwonders/validation/DestinationAccessValidator.kt b/backend/src/main/kotlin/org/luxons/sevenwonders/validation/DestinationAccessValidator.kt
new file mode 100644
index 00000000..5800edbb
--- /dev/null
+++ b/backend/src/main/kotlin/org/luxons/sevenwonders/validation/DestinationAccessValidator.kt
@@ -0,0 +1,55 @@
+package org.luxons.sevenwonders.validation
+
+import org.luxons.sevenwonders.repositories.LobbyRepository
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.stereotype.Component
+import java.util.regex.Matcher
+import java.util.regex.Pattern
+
+@Component
+class DestinationAccessValidator @Autowired constructor(private val lobbyRepository: LobbyRepository) {
+
+    fun hasAccess(username: String?, destination: String): Boolean {
+        return when {
+            username == null                                  -> false // unnamed user cannot belong to anything
+            hasForbiddenGameReference(username, destination)  -> false
+            hasForbiddenLobbyReference(username, destination) -> false
+            else                                              -> true
+        }
+    }
+
+    private fun hasForbiddenGameReference(username: String, destination: String): Boolean {
+        val gameMatcher = gameDestination.matcher(destination)
+        if (!gameMatcher.matches()) {
+            return false // no game reference is always OK
+        }
+        val gameId = extractId(gameMatcher)
+        return !isUserInLobby(username, gameId)
+    }
+
+    private fun hasForbiddenLobbyReference(username: String, destination: String): Boolean {
+        val lobbyMatcher = lobbyDestination.matcher(destination)
+        if (!lobbyMatcher.matches()) {
+            return false // no lobby reference is always OK
+        }
+        val lobbyId = extractId(lobbyMatcher)
+        return !isUserInLobby(username, lobbyId)
+    }
+
+    private fun isUserInLobby(username: String, lobbyId: Int): Boolean {
+        val lobby = lobbyRepository.find(lobbyId.toLong())
+        return lobby.containsUser(username)
+    }
+
+    companion object {
+
+        private val lobbyDestination = Pattern.compile(".*?/lobby/(?<id>\\d+?)(/.*)?")
+
+        private val gameDestination = Pattern.compile(".*?/game/(?<id>\\d+?)(/.*)?")
+
+        private fun extractId(matcher: Matcher): Int {
+            val id = matcher.group("id")
+            return Integer.parseInt(id)
+        }
+    }
+}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/SevenWondersTest.java b/backend/src/test/java/org/luxons/sevenwonders/SevenWondersTest.java
deleted file mode 100644
index 8cd959e3..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/SevenWondersTest.java
+++ /dev/null
@@ -1,158 +0,0 @@
-package org.luxons.sevenwonders;
-
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-
-import org.hildan.jackstomp.Channel;
-import org.hildan.jackstomp.JackstompSession;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.luxons.sevenwonders.test.api.ApiLobby;
-import org.luxons.sevenwonders.test.api.ApiPlayer;
-import org.luxons.sevenwonders.test.api.ApiPlayerTurnInfo;
-import org.luxons.sevenwonders.test.api.SevenWondersClient;
-import org.luxons.sevenwonders.test.api.SevenWondersSession;
-import org.springframework.boot.web.server.LocalServerPort;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
-import org.springframework.test.context.junit4.SpringRunner;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-
-@RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
-public class SevenWondersTest {
-
-    private static final String WEBSOCKET_URI = "ws://localhost:%d";
-
-    private SevenWondersClient client;
-
-    @LocalServerPort
-    private int randomServerPort;
-
-    private String serverUrl;
-
-    @Before
-    public void setUpClientAndUrl() {
-        client = new SevenWondersClient();
-        serverUrl = String.format(WEBSOCKET_URI, randomServerPort);
-    }
-
-    private void disconnect(SevenWondersSession... sessions) {
-        for (SevenWondersSession session : sessions) {
-            session.disconnect();
-        }
-    }
-
-    @Test
-    public void chooseName() throws InterruptedException, ExecutionException, TimeoutException {
-        SevenWondersSession session = client.connect(serverUrl);
-        String playerName = "Test User";
-        ApiPlayer player = session.chooseName(playerName);
-        assertNotNull(player);
-        assertEquals(playerName, player.getDisplayName());
-        session.disconnect();
-    }
-
-    private SevenWondersSession newPlayer(String name) throws InterruptedException, TimeoutException,
-            ExecutionException {
-        SevenWondersSession otherSession = client.connect(serverUrl);
-        otherSession.chooseName(name);
-        return otherSession;
-    }
-
-    @Test
-    public void lobbySubscription_ignoredForOutsiders() throws InterruptedException, ExecutionException,
-            TimeoutException {
-        SevenWondersSession ownerSession = newPlayer("GameOwner");
-        SevenWondersSession session1 = newPlayer("Player1");
-        SevenWondersSession session2 = newPlayer("Player2");
-        String gameName = "Test Game";
-        ApiLobby lobby = ownerSession.createGame(gameName);
-        session1.joinGame(lobby.getId());
-        session2.joinGame(lobby.getId());
-
-        SevenWondersSession outsiderSession = newPlayer("Outsider");
-        JackstompSession session = outsiderSession.getJackstompSession();
-        Channel<Object> started = session.subscribeEmptyMsgs("/topic/lobby/" + lobby.getId() + "/started");
-
-        ownerSession.startGame(lobby.getId());
-        Object nothing = started.next(1, TimeUnit.SECONDS);
-        assertNull(nothing);
-        disconnect(ownerSession, session1, session2, outsiderSession);
-    }
-
-    @Test
-    public void createGame_success() throws InterruptedException, ExecutionException, TimeoutException {
-        SevenWondersSession ownerSession = newPlayer("GameOwner");
-
-        String gameName = "Test Game";
-        ApiLobby lobby = ownerSession.createGame(gameName);
-        assertNotNull(lobby);
-        assertEquals(gameName, lobby.getName());
-
-        disconnect(ownerSession);
-    }
-
-    @Test
-    public void createGame_seenByConnectedPlayers() throws InterruptedException, ExecutionException, TimeoutException {
-        SevenWondersSession otherSession = newPlayer("OtherPlayer");
-        Channel<ApiLobby[]> games = otherSession.watchGames();
-
-        ApiLobby[] receivedLobbies = games.next();
-        assertNotNull(receivedLobbies);
-        assertEquals(0, receivedLobbies.length);
-
-        SevenWondersSession ownerSession = newPlayer("GameOwner");
-        String gameName = "Test Game";
-        ApiLobby createdLobby = ownerSession.createGame(gameName);
-
-        receivedLobbies = games.next();
-        assertNotNull(receivedLobbies);
-        assertEquals(1, receivedLobbies.length);
-        ApiLobby receivedLobby = receivedLobbies[0];
-        assertEquals(createdLobby.getId(), receivedLobby.getId());
-        assertEquals(createdLobby.getName(), receivedLobby.getName());
-
-        disconnect(ownerSession, otherSession);
-    }
-
-    @Test
-    public void startGame_3players() throws Exception {
-        SevenWondersSession session1 = newPlayer("Player1");
-        SevenWondersSession session2 = newPlayer("Player2");
-
-        ApiLobby lobby = session1.createGame("Test Game");
-        session2.joinGame(lobby.getId());
-
-        SevenWondersSession session3 = newPlayer("Player3");
-        session3.joinGame(lobby.getId());
-
-        session1.startGame(lobby.getId());
-
-        Channel<ApiPlayerTurnInfo> turns1 = session1.watchTurns();
-        Channel<ApiPlayerTurnInfo> turns2 = session2.watchTurns();
-        Channel<ApiPlayerTurnInfo> turns3 = session3.watchTurns();
-        session1.sayReady();
-        session2.sayReady();
-        session3.sayReady();
-        ApiPlayerTurnInfo turn1 = turns1.next();
-        ApiPlayerTurnInfo turn2 = turns2.next();
-        ApiPlayerTurnInfo turn3 = turns3.next();
-        assertNotNull(turn1);
-        assertNotNull(turn2);
-        assertNotNull(turn3);
-
-        disconnect(session1, session2, session3);
-    }
-
-    @After
-    public void tearDown() {
-        client.stop();
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/controllers/GameBrowserControllerTest.java b/backend/src/test/java/org/luxons/sevenwonders/controllers/GameBrowserControllerTest.java
deleted file mode 100644
index 65d2aa04..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/controllers/GameBrowserControllerTest.java
+++ /dev/null
@@ -1,133 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-import java.util.Collection;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.luxons.sevenwonders.actions.CreateGameAction;
-import org.luxons.sevenwonders.actions.JoinGameAction;
-import org.luxons.sevenwonders.controllers.GameBrowserController.UserAlreadyInGameException;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.LobbyRepository;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-import org.luxons.sevenwonders.repositories.PlayerRepository.PlayerNotFoundException;
-import org.luxons.sevenwonders.test.TestUtils;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-
-public class GameBrowserControllerTest {
-
-    private PlayerRepository playerRepository;
-
-    private GameBrowserController gameBrowserController;
-
-    @Before
-    public void setUp() {
-        playerRepository = new PlayerRepository();
-        LobbyRepository lobbyRepository = new LobbyRepository();
-        SimpMessagingTemplate template = TestUtils.createSimpMessagingTemplate();
-        LobbyController lobbyController = new LobbyController(playerRepository, template);
-        gameBrowserController = new GameBrowserController(lobbyController, lobbyRepository, playerRepository, template);
-    }
-
-    @Test
-    public void listGames_initiallyEmpty() {
-        Principal principal = new TestPrincipal("testuser");
-        Collection<Lobby> games = gameBrowserController.listGames(principal);
-        assertTrue(games.isEmpty());
-    }
-
-    @Test
-    public void createGame_success() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Principal principal = new TestPrincipal("testuser");
-
-        CreateGameAction action = new CreateGameAction();
-        action.setGameName("Test Game");
-
-        Lobby createdLobby = gameBrowserController.createGame(action, principal);
-
-        assertEquals("Test Game", createdLobby.getName());
-
-        Collection<Lobby> games = gameBrowserController.listGames(principal);
-        assertFalse(games.isEmpty());
-        Lobby lobby = games.iterator().next();
-        assertSame(lobby, createdLobby);
-        assertSame(player, lobby.getPlayers().get(0));
-    }
-
-    @Test(expected = PlayerNotFoundException.class)
-    public void createGame_failsForUnknownPlayer() {
-        Principal principal = new TestPrincipal("unknown");
-
-        CreateGameAction action = new CreateGameAction();
-        action.setGameName("Test Game");
-
-        gameBrowserController.createGame(action, principal);
-    }
-
-    @Test(expected = UserAlreadyInGameException.class)
-    public void createGame_failsWhenAlreadyInGame() {
-        playerRepository.createOrUpdate("testuser", "Test User");
-        Principal principal = new TestPrincipal("testuser");
-
-        CreateGameAction createGameAction1 = new CreateGameAction();
-        createGameAction1.setGameName("Test Game 1");
-
-        // auto-enters the game
-        gameBrowserController.createGame(createGameAction1, principal);
-
-        CreateGameAction createGameAction2 = new CreateGameAction();
-        createGameAction2.setGameName("Test Game 2");
-
-        // already in a game
-        gameBrowserController.createGame(createGameAction2, principal);
-    }
-
-    @Test
-    public void joinGame_success() {
-        Player owner = playerRepository.createOrUpdate("testowner", "Test User Owner");
-        Principal ownerPrincipal = new TestPrincipal("testowner");
-        CreateGameAction createGameAction = new CreateGameAction();
-        createGameAction.setGameName("Test Game");
-
-        Lobby createdLobby = gameBrowserController.createGame(createGameAction, ownerPrincipal);
-
-        Player joiner = playerRepository.createOrUpdate("testjoiner", "Test User Joiner");
-        Principal joinerPrincipal = new TestPrincipal("testjoiner");
-        JoinGameAction joinGameAction = new JoinGameAction();
-        joinGameAction.setGameId(createdLobby.getId());
-
-        Lobby joinedLobby = gameBrowserController.joinGame(joinGameAction, joinerPrincipal);
-
-        assertSame(createdLobby, joinedLobby);
-        assertSame(owner, joinedLobby.getPlayers().get(0));
-        assertSame(joiner, joinedLobby.getPlayers().get(1));
-    }
-
-    @Test(expected = UserAlreadyInGameException.class)
-    public void joinGame_failsWhenAlreadyInGame() {
-        playerRepository.createOrUpdate("testowner", "Test User Owner");
-        Principal ownerPrincipal = new TestPrincipal("testowner");
-        CreateGameAction createGameAction = new CreateGameAction();
-        createGameAction.setGameName("Test Game");
-
-        Lobby createdLobby = gameBrowserController.createGame(createGameAction, ownerPrincipal);
-
-        playerRepository.createOrUpdate("testjoiner", "Test User Joiner");
-        Principal joinerPrincipal = new TestPrincipal("testjoiner");
-        JoinGameAction joinGameAction = new JoinGameAction();
-        joinGameAction.setGameId(createdLobby.getId());
-
-        // joins the game
-        gameBrowserController.joinGame(joinGameAction, joinerPrincipal);
-        // already in a game
-        gameBrowserController.joinGame(joinGameAction, joinerPrincipal);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/controllers/HomeControllerTest.java b/backend/src/test/java/org/luxons/sevenwonders/controllers/HomeControllerTest.java
deleted file mode 100644
index 3104bf4a..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/controllers/HomeControllerTest.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-
-import org.junit.Test;
-import org.luxons.sevenwonders.actions.ChooseNameAction;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertSame;
-
-public class HomeControllerTest {
-
-    @Test
-    public void chooseName() {
-        PlayerRepository playerRepository = new PlayerRepository();
-        HomeController homeController = new HomeController(playerRepository);
-
-        ChooseNameAction action = new ChooseNameAction();
-        action.setPlayerName("Test User");
-
-        Principal principal = new TestPrincipal("testuser");
-
-        Player player = homeController.chooseName(action, principal);
-
-        assertSame(player, playerRepository.find("testuser"));
-        assertEquals("testuser", player.getUsername());
-        assertEquals("Test User", player.getDisplayName());
-        assertEquals(null, player.getLobby());
-        assertEquals(null, player.getGame());
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java b/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java
deleted file mode 100644
index 2da7e3c1..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/controllers/LobbyControllerTest.java
+++ /dev/null
@@ -1,203 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.luxons.sevenwonders.actions.ReorderPlayersAction;
-import org.luxons.sevenwonders.actions.UpdateSettingsAction;
-import org.luxons.sevenwonders.controllers.LobbyController.PlayerIsNotOwnerException;
-import org.luxons.sevenwonders.controllers.LobbyController.PlayerNotInLobbyException;
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.lobby.State;
-import org.luxons.sevenwonders.repositories.LobbyRepository;
-import org.luxons.sevenwonders.repositories.PlayerRepository;
-import org.luxons.sevenwonders.repositories.PlayerRepository.PlayerNotFoundException;
-import org.luxons.sevenwonders.test.TestUtils;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-import static org.luxons.sevenwonders.game.data.WonderSidePickMethod.ALL_A;
-
-public class LobbyControllerTest {
-
-    private PlayerRepository playerRepository;
-
-    private LobbyRepository lobbyRepository;
-
-    private LobbyController lobbyController;
-
-    @Before
-    public void setUp() {
-        playerRepository = new PlayerRepository();
-        lobbyRepository = new LobbyRepository();
-        SimpMessagingTemplate template = TestUtils.createSimpMessagingTemplate();
-        lobbyController = new LobbyController(playerRepository, template);
-    }
-
-    @Test(expected = PlayerNotFoundException.class)
-    public void leave_failsWhenPlayerDoesNotExist() {
-        Principal principal = new TestPrincipal("testuser");
-        lobbyController.leave(principal);
-    }
-
-    @Test(expected = PlayerNotInLobbyException.class)
-    public void leave_failsWhenNotInLobby() {
-        playerRepository.createOrUpdate("testuser", "Test User");
-        Principal principal = new TestPrincipal("testuser");
-        lobbyController.leave(principal);
-    }
-
-    @Test
-    public void leave_succeedsWhenInALobby_asOwner() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        assertTrue(lobby.getPlayers().contains(player));
-        assertSame(lobby, player.getLobby());
-
-        Principal principal = new TestPrincipal("testuser");
-        lobbyController.leave(principal);
-
-        assertFalse(lobby.getPlayers().contains(player));
-        assertNull(player.getLobby());
-    }
-
-    @Test
-    public void leave_succeedsWhenInALobby_asPeasant() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-        Player player2 = addPlayer(lobby, "testuser2");
-
-        assertTrue(lobby.getPlayers().contains(player2));
-        assertSame(lobby, player2.getLobby());
-
-        Principal principal = new TestPrincipal("testuser2");
-        lobbyController.leave(principal);
-
-        assertFalse(lobby.getPlayers().contains(player2));
-        assertNull(player2.getLobby());
-    }
-
-    @Test
-    public void reorderPlayers_succeedsForOwner() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        Player player2 = addPlayer(lobby, "testuser2");
-        Player player3 = addPlayer(lobby, "testuser3");
-        Player player4 = addPlayer(lobby, "testuser4");
-
-        List<Player> players = Arrays.asList(player, player2, player3, player4);
-        assertEquals(players, lobby.getPlayers());
-
-        ReorderPlayersAction reorderPlayersAction = new ReorderPlayersAction();
-        List<Player> reorderedPlayers = Arrays.asList(player3, player, player2, player4);
-        List<String> playerNames = reorderedPlayers.stream().map(Player::getUsername).collect(Collectors.toList());
-        reorderPlayersAction.setOrderedPlayers(playerNames);
-
-        Principal principal = new TestPrincipal("testuser");
-        lobbyController.reorderPlayers(reorderPlayersAction, principal);
-
-        assertEquals(reorderedPlayers, lobby.getPlayers());
-    }
-
-    @Test(expected = PlayerIsNotOwnerException.class)
-    public void reorderPlayers_failsForPeasant() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        Player player2 = addPlayer(lobby, "testuser2");
-        Player player3 = addPlayer(lobby, "testuser3");
-
-        ReorderPlayersAction reorderPlayersAction = new ReorderPlayersAction();
-        List<Player> reorderedPlayers = Arrays.asList(player3, player, player2);
-        List<String> playerNames = reorderedPlayers.stream().map(Player::getUsername).collect(Collectors.toList());
-        reorderPlayersAction.setOrderedPlayers(playerNames);
-
-        Principal principal = new TestPrincipal("testuser2");
-        lobbyController.reorderPlayers(reorderPlayersAction, principal);
-    }
-
-    @Test
-    public void updateSettings_succeedsForOwner() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        addPlayer(lobby, "testuser2");
-        addPlayer(lobby, "testuser3");
-        addPlayer(lobby, "testuser4");
-
-        assertEquals(new CustomizableSettings(), lobby.getSettings());
-
-        UpdateSettingsAction updateSettingsAction = new UpdateSettingsAction();
-        CustomizableSettings newSettings = new CustomizableSettings(12L, 5, ALL_A, 5, 5, 4, 10, 2, new HashMap<>());
-        updateSettingsAction.setSettings(newSettings);
-
-        Principal principal = new TestPrincipal("testuser");
-        lobbyController.updateSettings(updateSettingsAction, principal);
-
-        assertEquals(newSettings, lobby.getSettings());
-    }
-
-    @Test(expected = PlayerIsNotOwnerException.class)
-    public void updateSettings_failsForPeasant() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        addPlayer(lobby, "testuser2");
-        addPlayer(lobby, "testuser3");
-
-        UpdateSettingsAction updateSettingsAction = new UpdateSettingsAction();
-        updateSettingsAction.setSettings(new CustomizableSettings());
-
-        Principal principal = new TestPrincipal("testuser2");
-        lobbyController.updateSettings(updateSettingsAction, principal);
-    }
-
-    @Test
-    public void startGame_succeedsForOwner() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        addPlayer(lobby, "testuser2");
-        addPlayer(lobby, "testuser3");
-        addPlayer(lobby, "testuser4");
-
-        Principal principal = new TestPrincipal("testuser");
-        lobbyController.startGame(principal);
-
-        assertSame(State.PLAYING, lobby.getState());
-    }
-
-    @Test(expected = PlayerIsNotOwnerException.class)
-    public void startGame_failsForPeasant() {
-        Player player = playerRepository.createOrUpdate("testuser", "Test User");
-        Lobby lobby = lobbyRepository.create("Test Game", player);
-
-        addPlayer(lobby, "testuser2");
-        addPlayer(lobby, "testuser3");
-
-        Principal principal = new TestPrincipal("testuser2");
-        lobbyController.startGame(principal);
-    }
-
-    private Player addPlayer(Lobby lobby, String username) {
-        Player player = playerRepository.createOrUpdate(username, username);
-        lobby.addPlayer(player);
-
-        assertTrue(lobby.getPlayers().contains(player));
-        assertSame(lobby, player.getLobby());
-        return player;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/controllers/TestPrincipal.java b/backend/src/test/java/org/luxons/sevenwonders/controllers/TestPrincipal.java
deleted file mode 100644
index db601cd2..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/controllers/TestPrincipal.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package org.luxons.sevenwonders.controllers;
-
-import java.security.Principal;
-
-public class TestPrincipal implements Principal {
-
-    private final String name;
-
-    TestPrincipal(String name) {
-        this.name = name;
-    }
-
-    @Override
-    public String getName() {
-        return name;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/lobby/LobbyTest.java b/backend/src/test/java/org/luxons/sevenwonders/lobby/LobbyTest.java
deleted file mode 100644
index 5747eb5a..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/lobby/LobbyTest.java
+++ /dev/null
@@ -1,225 +0,0 @@
-package org.luxons.sevenwonders.lobby;
-
-import java.util.Arrays;
-
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.experimental.theories.DataPoints;
-import org.junit.experimental.theories.Theories;
-import org.junit.experimental.theories.Theory;
-import org.junit.rules.ExpectedException;
-import org.junit.runner.RunWith;
-import org.luxons.sevenwonders.game.Game;
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.game.data.GameDefinition;
-import org.luxons.sevenwonders.game.data.GameDefinitionLoader;
-import org.luxons.sevenwonders.lobby.Lobby.GameAlreadyStartedException;
-import org.luxons.sevenwonders.lobby.Lobby.PlayerNameAlreadyUsedException;
-import org.luxons.sevenwonders.lobby.Lobby.PlayerOverflowException;
-import org.luxons.sevenwonders.lobby.Lobby.PlayerUnderflowException;
-import org.luxons.sevenwonders.lobby.Lobby.UnknownPlayerException;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assume.assumeTrue;
-
-@RunWith(Theories.class)
-public class LobbyTest {
-
-    private static GameDefinition gameDefinition;
-
-    @Rule
-    public ExpectedException thrown = ExpectedException.none();
-
-    private Player gameOwner;
-
-    private Lobby lobby;
-
-    @DataPoints
-    public static int[] nbPlayers() {
-        return new int[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
-    }
-
-    @BeforeClass
-    public static void loadDefinition() {
-        gameDefinition = new GameDefinitionLoader().getGameDefinition();
-    }
-
-    @Before
-    public void setUp() {
-        gameOwner = new Player("gameowner", "Game owner");
-        lobby = new Lobby(0, "Test Game", gameOwner, gameDefinition);
-    }
-
-    @Test
-    public void testId() {
-        Lobby l = new Lobby(5, "Test Game", gameOwner, gameDefinition);
-        assertEquals(5, l.getId());
-    }
-
-    @Test
-    public void testName() {
-        Lobby l = new Lobby(5, "Test Game", gameOwner, gameDefinition);
-        assertEquals("Test Game", l.getName());
-    }
-
-    @Test
-    public void testOwner() {
-        gameOwner.setIndex(42);
-        Lobby l = new Lobby(5, "Test Game", gameOwner, gameDefinition);
-        assertSame(gameOwner, l.getPlayers().get(0));
-        assertSame(l, gameOwner.getLobby());
-        assertEquals(0, gameOwner.getIndex());
-    }
-
-    @Test
-    public void isOwner_falseWhenNull() {
-        assertFalse(lobby.isOwner(null));
-    }
-
-    @Test
-    public void isOwner_falseWhenEmptyString() {
-        assertFalse(lobby.isOwner(""));
-    }
-
-    @Test
-    public void isOwner_falseWhenGarbageString() {
-        assertFalse(lobby.isOwner("this is garbage"));
-    }
-
-    @Test
-    public void isOwner_trueWhenOwnerUsername() {
-        assertTrue(lobby.isOwner(gameOwner.getUsername()));
-    }
-
-    @Test
-    public void isOwner_falseWhenOtherPlayerName() {
-        Player player = new Player("testuser", "Test User");
-        lobby.addPlayer(player);
-        assertFalse(lobby.isOwner(player.getUsername()));
-    }
-
-    @Test
-    public void addPlayer_success() {
-        Player player = new Player("testuser", "Test User");
-        lobby.addPlayer(player);
-        assertTrue(lobby.containsUser("testuser"));
-        assertSame(lobby, player.getLobby());
-        assertSame(1, player.getIndex()); // the owner is 0
-    }
-
-    @Test(expected = PlayerNameAlreadyUsedException.class)
-    public void addPlayer_failsOnSameName() {
-        Player player = new Player("testuser", "Test User");
-        Player player2 = new Player("testuser2", "Test User");
-        lobby.addPlayer(player);
-        lobby.addPlayer(player2);
-    }
-
-    @Test(expected = PlayerOverflowException.class)
-    public void addPlayer_playerOverflowWhenTooMany() {
-        // the owner + the max number gives an overflow
-        addPlayers(gameDefinition.getMaxPlayers());
-    }
-
-    @Test(expected = GameAlreadyStartedException.class)
-    public void addPlayer_failWhenGameStarted() {
-        // total with owner is the minimum
-        addPlayers(gameDefinition.getMinPlayers() - 1);
-        lobby.startGame();
-        lobby.addPlayer(new Player("soonerNextTime", "The Late Guy"));
-    }
-
-    private void addPlayers(int nbPlayers) {
-        for (int i = 0; i < nbPlayers; i++) {
-            Player player = new Player("testuser" + i, "Test User " + i);
-            lobby.addPlayer(player);
-        }
-    }
-
-    @Test(expected = UnknownPlayerException.class)
-    public void removePlayer_failsWhenNotPresent() {
-        lobby.removePlayer("anyname");
-    }
-
-    @Test
-    public void removePlayer_success() {
-        Player player = new Player("testuser", "Test User");
-        lobby.addPlayer(player);
-        lobby.removePlayer("testuser");
-        assertFalse(lobby.containsUser("testuser"));
-        assertNull(player.getLobby());
-        assertNull(player.getGame());
-        assertEquals(-1, player.getIndex());
-    }
-
-    @Test
-    public void reorderPlayers_success() {
-        Player player1 = new Player("testuser1", "Test User 1");
-        Player player2 = new Player("testuser2", "Test User 2");
-        Player player3 = new Player("testuser3", "Test User 3");
-        lobby.addPlayer(player1);
-        lobby.addPlayer(player2);
-        lobby.addPlayer(player3);
-        lobby.reorderPlayers(Arrays.asList("testuser3", "testuser1", "testuser2"));
-        assertEquals("testuser3", lobby.getPlayers().get(0).getUsername());
-        assertEquals("testuser1", lobby.getPlayers().get(1).getUsername());
-        assertEquals("testuser2", lobby.getPlayers().get(2).getUsername());
-        assertEquals(0, lobby.getPlayers().get(0).getIndex());
-        assertEquals(1, lobby.getPlayers().get(1).getIndex());
-        assertEquals(2, lobby.getPlayers().get(2).getIndex());
-    }
-
-    @Test(expected = UnknownPlayerException.class)
-    public void reorderPlayers_failsOnUnknownPlayer() {
-        Player player1 = new Player("testuser1", "Test User 1");
-        Player player2 = new Player("testuser2", "Test User 2");
-        Player player3 = new Player("testuser3", "Test User 3");
-        lobby.addPlayer(player1);
-        lobby.addPlayer(player2);
-        lobby.addPlayer(player3);
-        lobby.reorderPlayers(Arrays.asList("unknown", "testuser1", "testuser2"));
-    }
-
-    @Theory
-    public void startGame_failsBelowMinPlayers(int nbPlayers) {
-        assumeTrue(nbPlayers < gameDefinition.getMinPlayers());
-        thrown.expect(PlayerUnderflowException.class);
-        // there is already the owner
-        addPlayers(nbPlayers - 1);
-        lobby.startGame();
-    }
-
-    @Theory
-    public void startGame_succeedsAboveMinPlayers(int nbPlayers) {
-        assumeTrue(nbPlayers >= gameDefinition.getMinPlayers());
-        assumeTrue(nbPlayers <= gameDefinition.getMaxPlayers());
-        // there is already the owner
-        addPlayers(nbPlayers - 1);
-        Game game = lobby.startGame();
-        assertNotNull(game);
-        lobby.getPlayers().forEach(p -> assertSame(game, p.getGame()));
-    }
-
-    @Test
-    public void startGame_switchesState() {
-        assertTrue(lobby.getState() == State.LOBBY);
-        // there is already the owner
-        addPlayers(gameDefinition.getMinPlayers() - 1);
-        lobby.startGame();
-        assertTrue(lobby.getState() == State.PLAYING);
-    }
-
-    @Test
-    public void setSettings() {
-        CustomizableSettings settings = new CustomizableSettings();
-        lobby.setSettings(settings);
-        assertSame(settings, lobby.getSettings());
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/repositories/LobbyRepositoryTest.java b/backend/src/test/java/org/luxons/sevenwonders/repositories/LobbyRepositoryTest.java
deleted file mode 100644
index 444e7aaa..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/repositories/LobbyRepositoryTest.java
+++ /dev/null
@@ -1,76 +0,0 @@
-package org.luxons.sevenwonders.repositories;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.LobbyRepository.LobbyNotFoundException;
-
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
-public class LobbyRepositoryTest {
-
-    private LobbyRepository repository;
-
-    @Before
-    public void setUp() {
-        repository = new LobbyRepository();
-    }
-
-    @Test
-    public void list_initiallyEmpty() {
-        assertTrue(repository.list().isEmpty());
-    }
-
-    @Test
-    public void list_returnsAllLobbies() {
-        Player owner = new Player("owner", "The Owner");
-        Lobby lobby1 = repository.create("Test Name 1", owner);
-        Lobby lobby2 = repository.create("Test Name 2", owner);
-        assertTrue(repository.list().contains(lobby1));
-        assertTrue(repository.list().contains(lobby2));
-    }
-
-    @Test
-    public void create_withCorrectOwner() {
-        Player owner = new Player("owner", "The Owner");
-        Lobby lobby = repository.create("Test Name", owner);
-        assertTrue(lobby.isOwner(owner.getUsername()));
-    }
-
-    @Test(expected = LobbyNotFoundException.class)
-    public void find_failsOnUnknownId() {
-        repository.find(123);
-    }
-
-    @Test
-    public void find_returnsTheSameObject() {
-        Player owner = new Player("owner", "The Owner");
-        Lobby lobby1 = repository.create("Test Name 1", owner);
-        Lobby lobby2 = repository.create("Test Name 2", owner);
-        assertSame(lobby1, repository.find(lobby1.getId()));
-        assertSame(lobby2, repository.find(lobby2.getId()));
-    }
-
-    @Test(expected = LobbyNotFoundException.class)
-    public void remove_failsOnUnknownId() {
-        repository.remove(123);
-    }
-
-    @Test
-    public void remove_succeeds() {
-        Player owner = new Player("owner", "The Owner");
-        Lobby lobby1 = repository.create("Test Name 1", owner);
-        assertNotNull(repository.find(lobby1.getId()));
-        repository.remove(lobby1.getId());
-        try {
-            repository.find(lobby1.getId());
-            fail(); // the call to find() should have failed
-        } catch (LobbyNotFoundException e) {
-            // the lobby has been properly removed
-        }
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/repositories/PlayerRepositoryTest.java b/backend/src/test/java/org/luxons/sevenwonders/repositories/PlayerRepositoryTest.java
deleted file mode 100644
index 95fd80fd..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/repositories/PlayerRepositoryTest.java
+++ /dev/null
@@ -1,73 +0,0 @@
-package org.luxons.sevenwonders.repositories;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.PlayerRepository.PlayerNotFoundException;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-
-public class PlayerRepositoryTest {
-
-    private PlayerRepository repository;
-
-    @Before
-    public void setUp() {
-        repository = new PlayerRepository();
-    }
-
-    @Test
-    public void contains_falseIfNoUserAdded() {
-        assertFalse(repository.contains("anyUsername"));
-    }
-
-    @Test
-    public void contains_trueForCreatedPlayer() {
-        repository.createOrUpdate("player1", "Player 1");
-        assertTrue(repository.contains("player1"));
-    }
-
-    @Test
-    public void createOrUpdate_createsProperly() {
-        Player player1 = repository.createOrUpdate("player1", "Player 1");
-        assertEquals("player1", player1.getUsername());
-        assertEquals("Player 1", player1.getDisplayName());
-    }
-
-    @Test
-    public void createOrUpdate_updatesDisplayName() {
-        Player player1 = repository.createOrUpdate("player1", "Player 1");
-        Player player1Updated = repository.createOrUpdate("player1", "Much Better Name");
-        assertSame(player1, player1Updated);
-        assertEquals("Much Better Name", player1Updated.getDisplayName());
-    }
-
-    @Test(expected = PlayerNotFoundException.class)
-    public void find_failsOnUnknownUsername() {
-        repository.find("anyUsername");
-    }
-
-    @Test
-    public void find_returnsTheSameObject() {
-        Player player1 = repository.createOrUpdate("player1", "Player 1");
-        Player player2 = repository.createOrUpdate("player2", "Player 2");
-        assertSame(player1, repository.find("player1"));
-        assertSame(player2, repository.find("player2"));
-    }
-
-    @Test(expected = PlayerNotFoundException.class)
-    public void remove_failsOnUnknownUsername() {
-        repository.remove("anyUsername");
-    }
-
-    @Test
-    public void remove_succeeds() {
-        repository.createOrUpdate("player1", "Player 1");
-        assertTrue(repository.contains("player1"));
-        repository.remove("player1");
-        assertFalse(repository.contains("player1"));
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/TestUtils.java b/backend/src/test/java/org/luxons/sevenwonders/test/TestUtils.java
deleted file mode 100644
index b29f970e..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/TestUtils.java
+++ /dev/null
@@ -1,23 +0,0 @@
-package org.luxons.sevenwonders.test;
-
-import org.springframework.messaging.Message;
-import org.springframework.messaging.MessageChannel;
-import org.springframework.messaging.simp.SimpMessagingTemplate;
-
-public class TestUtils {
-
-    public static SimpMessagingTemplate createSimpMessagingTemplate() {
-        MessageChannel messageChannel = new MessageChannel() {
-            @Override
-            public boolean send(Message<?> message) {
-                return true;
-            }
-
-            @Override
-            public boolean send(Message<?> message, long timeout) {
-                return true;
-            }
-        };
-        return new SimpMessagingTemplate(messageChannel);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiBoard.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiBoard.java
deleted file mode 100644
index 56a67482..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiBoard.java
+++ /dev/null
@@ -1,166 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
-
-import org.luxons.sevenwonders.game.cards.Card;
-import org.luxons.sevenwonders.game.effects.SpecialAbility;
-
-public class ApiBoard {
-
-    private ApiWonder wonder;
-
-    private int playerIndex;
-
-    private List<ApiCard> playedCards;
-
-    private ApiProduction production;
-
-    private ApiProduction publicProduction;
-
-    private ApiScience science;
-
-    private ApiTradingRules tradingRules;
-
-    private ApiMilitary military;
-
-    private Set<SpecialAbility> specialAbilities;
-
-    private Map<Integer, Boolean> consumedFreeCards;
-
-    private Card copiedGuild;
-
-    private int gold;
-
-    private int pointsPer3Gold;
-
-    public ApiWonder getWonder() {
-        return wonder;
-    }
-
-    public void setWonder(ApiWonder wonder) {
-        this.wonder = wonder;
-    }
-
-    public int getPlayerIndex() {
-        return playerIndex;
-    }
-
-    public void setPlayerIndex(int playerIndex) {
-        this.playerIndex = playerIndex;
-    }
-
-    public List<ApiCard> getPlayedCards() {
-        return playedCards;
-    }
-
-    public void setPlayedCards(List<ApiCard> playedCards) {
-        this.playedCards = playedCards;
-    }
-
-    public ApiProduction getProduction() {
-        return production;
-    }
-
-    public void setProduction(ApiProduction production) {
-        this.production = production;
-    }
-
-    public ApiProduction getPublicProduction() {
-        return publicProduction;
-    }
-
-    public void setPublicProduction(ApiProduction publicProduction) {
-        this.publicProduction = publicProduction;
-    }
-
-    public ApiScience getScience() {
-        return science;
-    }
-
-    public void setScience(ApiScience science) {
-        this.science = science;
-    }
-
-    public ApiTradingRules getTradingRules() {
-        return tradingRules;
-    }
-
-    public void setTradingRules(ApiTradingRules tradingRules) {
-        this.tradingRules = tradingRules;
-    }
-
-    public ApiMilitary getMilitary() {
-        return military;
-    }
-
-    public void setMilitary(ApiMilitary military) {
-        this.military = military;
-    }
-
-    public Set<SpecialAbility> getSpecialAbilities() {
-        return specialAbilities;
-    }
-
-    public void setSpecialAbilities(Set<SpecialAbility> specialAbilities) {
-        this.specialAbilities = specialAbilities;
-    }
-
-    public Map<Integer, Boolean> getConsumedFreeCards() {
-        return consumedFreeCards;
-    }
-
-    public void setConsumedFreeCards(Map<Integer, Boolean> consumedFreeCards) {
-        this.consumedFreeCards = consumedFreeCards;
-    }
-
-    public Card getCopiedGuild() {
-        return copiedGuild;
-    }
-
-    public void setCopiedGuild(Card copiedGuild) {
-        this.copiedGuild = copiedGuild;
-    }
-
-    public int getGold() {
-        return gold;
-    }
-
-    public void setGold(int gold) {
-        this.gold = gold;
-    }
-
-    public int getPointsPer3Gold() {
-        return pointsPer3Gold;
-    }
-
-    public void setPointsPer3Gold(int pointsPer3Gold) {
-        this.pointsPer3Gold = pointsPer3Gold;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ApiBoard apiBoard = (ApiBoard) o;
-        return playerIndex == apiBoard.playerIndex && gold == apiBoard.gold && pointsPer3Gold == apiBoard.pointsPer3Gold
-                && Objects.equals(wonder, apiBoard.wonder) && Objects.equals(playedCards, apiBoard.playedCards)
-                && Objects.equals(production, apiBoard.production) && Objects.equals(publicProduction,
-                apiBoard.publicProduction) && Objects.equals(science, apiBoard.science) && Objects.equals(tradingRules,
-                apiBoard.tradingRules) && Objects.equals(military, apiBoard.military) && Objects.equals(
-                specialAbilities, apiBoard.specialAbilities) && Objects.equals(consumedFreeCards,
-                apiBoard.consumedFreeCards) && Objects.equals(copiedGuild, apiBoard.copiedGuild);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(wonder, playerIndex, playedCards, production, publicProduction, science, tradingRules,
-                military, specialAbilities, consumedFreeCards, copiedGuild, gold, pointsPer3Gold);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiCard.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiCard.java
deleted file mode 100644
index f927dd4c..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiCard.java
+++ /dev/null
@@ -1,100 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.List;
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.cards.Color;
-import org.luxons.sevenwonders.game.cards.Requirements;
-
-public class ApiCard {
-
-    private String name;
-
-    private Color color;
-
-    private Requirements requirements;
-
-    private String chainParent;
-
-    private List<String> chainChildren;
-
-    private String image;
-
-    private ApiCardBack back;
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public Color getColor() {
-        return color;
-    }
-
-    public void setColor(Color color) {
-        this.color = color;
-    }
-
-    public Requirements getRequirements() {
-        return requirements;
-    }
-
-    public void setRequirements(Requirements requirements) {
-        this.requirements = requirements;
-    }
-
-    public String getChainParent() {
-        return chainParent;
-    }
-
-    public void setChainParent(String chainParent) {
-        this.chainParent = chainParent;
-    }
-
-    public List<String> getChainChildren() {
-        return chainChildren;
-    }
-
-    public void setChainChildren(List<String> chainChildren) {
-        this.chainChildren = chainChildren;
-    }
-
-    public String getImage() {
-        return image;
-    }
-
-    public void setImage(String image) {
-        this.image = image;
-    }
-
-    public ApiCardBack getBack() {
-        return back;
-    }
-
-    public void setBack(ApiCardBack back) {
-        this.back = back;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ApiCard apiCard = (ApiCard) o;
-        return Objects.equals(name, apiCard.name) && color == apiCard.color && Objects.equals(requirements,
-                apiCard.requirements) && Objects.equals(chainParent, apiCard.chainParent) && Objects.equals(
-                chainChildren, apiCard.chainChildren) && Objects.equals(image, apiCard.image) && Objects.equals(back,
-                apiCard.back);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(name, color, requirements, chainParent, chainChildren, image, back);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiCardBack.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiCardBack.java
deleted file mode 100644
index e0f5a50e..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiCardBack.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-public class ApiCardBack {
-
-    private String image;
-
-    public String getImage() {
-        return image;
-    }
-
-    public void setImage(String image) {
-        this.image = image;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiEffect.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiEffect.java
deleted file mode 100644
index df71365d..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiEffect.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-public class ApiEffect {
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiHandCard.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiHandCard.java
deleted file mode 100644
index 0cb143c1..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiHandCard.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-/**
- * A card with contextual information relative to the hand it is sitting in. The extra information is especially
- * useful because it frees the client from a painful business logic implementation.
- */
-public class ApiHandCard {
-
-    private ApiCard card;
-
-    private boolean chainable;
-
-    private boolean free;
-
-    private boolean playable;
-
-    public ApiCard getCard() {
-        return card;
-    }
-
-    public void setCard(ApiCard card) {
-        this.card = card;
-    }
-
-    public boolean isChainable() {
-        return chainable;
-    }
-
-    public void setChainable(boolean chainable) {
-        this.chainable = chainable;
-    }
-
-    public boolean isFree() {
-        return free;
-    }
-
-    public void setFree(boolean free) {
-        this.free = free;
-    }
-
-    public boolean isPlayable() {
-        return playable;
-    }
-
-    public void setPlayable(boolean playable) {
-        this.playable = playable;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiLobby.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiLobby.java
deleted file mode 100644
index e17369b1..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiLobby.java
+++ /dev/null
@@ -1,89 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.List;
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.api.CustomizableSettings;
-import org.luxons.sevenwonders.lobby.State;
-
-public class ApiLobby {
-
-    private long id;
-
-    private String name;
-
-    private String owner;
-
-    private List<ApiPlayer> players;
-
-    private CustomizableSettings settings;
-
-    private State state;
-
-    public long getId() {
-        return id;
-    }
-
-    public void setId(long id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public String getOwner() {
-        return owner;
-    }
-
-    public void setOwner(String owner) {
-        this.owner = owner;
-    }
-
-    public List<ApiPlayer> getPlayers() {
-        return players;
-    }
-
-    public void setPlayers(List<ApiPlayer> players) {
-        this.players = players;
-    }
-
-    public CustomizableSettings getSettings() {
-        return settings;
-    }
-
-    public void setSettings(CustomizableSettings settings) {
-        this.settings = settings;
-    }
-
-    public State getState() {
-        return state;
-    }
-
-    public void setState(State state) {
-        this.state = state;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ApiLobby apiLobby = (ApiLobby) o;
-        return id == apiLobby.id && Objects.equals(name, apiLobby.name) && Objects.equals(owner, apiLobby.owner)
-                && Objects.equals(players, apiLobby.players) && Objects.equals(settings, apiLobby.settings)
-                && state == apiLobby.state;
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(id, name, owner, players, settings, state);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiMilitary.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiMilitary.java
deleted file mode 100644
index 11ba2b1c..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiMilitary.java
+++ /dev/null
@@ -1,34 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-public class ApiMilitary {
-
-    private int nbShields = 0;
-
-    private int totalPoints = 0;
-
-    private int nbDefeatTokens = 0;
-
-    public int getNbShields() {
-        return nbShields;
-    }
-
-    public void setNbShields(int nbShields) {
-        this.nbShields = nbShields;
-    }
-
-    public int getTotalPoints() {
-        return totalPoints;
-    }
-
-    public void setTotalPoints(int totalPoints) {
-        this.totalPoints = totalPoints;
-    }
-
-    public int getNbDefeatTokens() {
-        return nbDefeatTokens;
-    }
-
-    public void setNbDefeatTokens(int nbDefeatTokens) {
-        this.nbDefeatTokens = nbDefeatTokens;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiPlayer.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiPlayer.java
deleted file mode 100644
index 940e410b..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiPlayer.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.Objects;
-
-public class ApiPlayer {
-
-    private String username;
-
-    private String displayName;
-
-    private int index;
-
-    public String getUsername() {
-        return username;
-    }
-
-    public String getDisplayName() {
-        return displayName;
-    }
-
-    public void setDisplayName(String displayName) {
-        this.displayName = displayName;
-    }
-
-    public int getIndex() {
-        return index;
-    }
-
-    public void setIndex(int index) {
-        this.index = index;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ApiPlayer apiPlayer = (ApiPlayer) o;
-        return index == apiPlayer.index && Objects.equals(username, apiPlayer.username) && Objects.equals(displayName,
-                apiPlayer.displayName);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(username, displayName, index);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiPlayerTurnInfo.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiPlayerTurnInfo.java
deleted file mode 100644
index ae4d06ad..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiPlayerTurnInfo.java
+++ /dev/null
@@ -1,98 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.List;
-import java.util.Objects;
-
-import org.luxons.sevenwonders.game.api.Action;
-
-public class ApiPlayerTurnInfo {
-
-    private int playerIndex;
-
-    private ApiTable table;
-
-    private int currentAge;
-
-    private Action action;
-
-    private List<ApiHandCard> hand;
-
-    private List<ApiCard> neighbourGuildCards;
-
-    private String message;
-
-    public int getPlayerIndex() {
-        return playerIndex;
-    }
-
-    public void setPlayerIndex(int playerIndex) {
-        this.playerIndex = playerIndex;
-    }
-
-    public ApiTable getTable() {
-        return table;
-    }
-
-    public void setTable(ApiTable table) {
-        this.table = table;
-    }
-
-    public int getCurrentAge() {
-        return currentAge;
-    }
-
-    public void setCurrentAge(int currentAge) {
-        this.currentAge = currentAge;
-    }
-
-    public List<ApiHandCard> getHand() {
-        return hand;
-    }
-
-    public void setHand(List<ApiHandCard> hand) {
-        this.hand = hand;
-    }
-
-    public List<ApiCard> getNeighbourGuildCards() {
-        return neighbourGuildCards;
-    }
-
-    public void setNeighbourGuildCards(List<ApiCard> neighbourGuildCards) {
-        this.neighbourGuildCards = neighbourGuildCards;
-    }
-
-    public Action getAction() {
-        return action;
-    }
-
-    public void setAction(Action action) {
-        this.action = action;
-    }
-
-    public String getMessage() {
-        return message;
-    }
-
-    public void setMessage(String message) {
-        this.message = message;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-        ApiPlayerTurnInfo that = (ApiPlayerTurnInfo) o;
-        return playerIndex == that.playerIndex && currentAge == that.currentAge && Objects.equals(table, that.table)
-                && action == that.action && Objects.equals(hand, that.hand) && Objects.equals(neighbourGuildCards,
-                that.neighbourGuildCards) && Objects.equals(message, that.message);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(playerIndex, table, currentAge, action, hand, neighbourGuildCards, message);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiProduction.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiProduction.java
deleted file mode 100644
index 0c3bf8b3..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiProduction.java
+++ /dev/null
@@ -1,29 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.Set;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-import org.luxons.sevenwonders.game.resources.Resources;
-
-public class ApiProduction {
-
-    private Resources fixedResources;
-
-    private Set<Set<ResourceType>> alternativeResources;
-
-    public Resources getFixedResources() {
-        return fixedResources;
-    }
-
-    public void setFixedResources(Resources fixedResources) {
-        this.fixedResources = fixedResources;
-    }
-
-    public Set<Set<ResourceType>> getAlternativeResources() {
-        return alternativeResources;
-    }
-
-    public void setAlternativeResources(Set<Set<ResourceType>> alternativeResources) {
-        this.alternativeResources = alternativeResources;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiScience.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiScience.java
deleted file mode 100644
index b2808c83..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiScience.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.boards.ScienceType;
-
-public class ApiScience {
-
-    private Map<ScienceType, Integer> quantities;
-
-    private int jokers;
-
-    public Map<ScienceType, Integer> getQuantities() {
-        return quantities;
-    }
-
-    public void setQuantities(Map<ScienceType, Integer> quantities) {
-        this.quantities = quantities;
-    }
-
-    public int getJokers() {
-        return jokers;
-    }
-
-    public void setJokers(int jokers) {
-        this.jokers = jokers;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiTable.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiTable.java
deleted file mode 100644
index d0d991aa..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiTable.java
+++ /dev/null
@@ -1,73 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.cards.HandRotationDirection;
-import org.luxons.sevenwonders.game.moves.Move;
-
-public class ApiTable {
-
-    private int nbPlayers;
-
-    private List<ApiBoard> boards;
-
-    private int currentAge = 0;
-
-    private HandRotationDirection handRotationDirection;
-
-    private List<Move> lastPlayedMoves;
-
-    private List<ApiCard> neighbourGuildCards;
-
-    public int getNbPlayers() {
-        return nbPlayers;
-    }
-
-    public void setNbPlayers(int nbPlayers) {
-        this.nbPlayers = nbPlayers;
-    }
-
-    public List<ApiBoard> getBoards() {
-        return boards;
-    }
-
-    public void setBoards(List<ApiBoard> boards) {
-        this.boards = boards;
-    }
-
-    public int getCurrentAge() {
-        return currentAge;
-    }
-
-    public void setCurrentAge(int currentAge) {
-        this.currentAge = currentAge;
-    }
-
-    public HandRotationDirection getHandRotationDirection() {
-        return handRotationDirection;
-    }
-
-    public void setHandRotationDirection(HandRotationDirection handRotationDirection) {
-        this.handRotationDirection = handRotationDirection;
-    }
-
-    public List<Move> getLastPlayedMoves() {
-        return lastPlayedMoves;
-    }
-
-    public void setLastPlayedMoves(List<Move> lastPlayedMoves) {
-        this.lastPlayedMoves = lastPlayedMoves;
-    }
-
-    public void increaseCurrentAge() {
-        this.currentAge++;
-    }
-
-    public List<ApiCard> getNeighbourGuildCards() {
-        return neighbourGuildCards;
-    }
-
-    public void setNeighbourGuildCards(List<ApiCard> neighbourGuildCards) {
-        this.neighbourGuildCards = neighbourGuildCards;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiTradingRules.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiTradingRules.java
deleted file mode 100644
index 324b7d0e..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiTradingRules.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.Map;
-
-import org.luxons.sevenwonders.game.resources.Provider;
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-public class ApiTradingRules {
-
-    private Map<ResourceType, Map<Provider, Integer>> costs;
-
-    public Map<ResourceType, Map<Provider, Integer>> getCosts() {
-        return costs;
-    }
-
-    public void setCosts(Map<ResourceType, Map<Provider, Integer>> costs) {
-        this.costs = costs;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiWonder.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiWonder.java
deleted file mode 100644
index d671b2f7..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiWonder.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.List;
-
-import org.luxons.sevenwonders.game.resources.ResourceType;
-
-public class ApiWonder {
-
-    private String name;
-
-    private ResourceType initialResource;
-
-    private List<ApiWonderStage> stages;
-
-    private String image;
-
-    private int nbBbuiltStages;
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiWonderStage.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiWonderStage.java
deleted file mode 100644
index 6a6e0884..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/ApiWonderStage.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import org.luxons.sevenwonders.game.cards.CardBack;
-import org.luxons.sevenwonders.game.cards.Requirements;
-
-public class ApiWonderStage {
-
-    private Requirements requirements;
-
-    private CardBack cardBack;
-
-    private boolean built;
-
-    public Requirements getRequirements() {
-        return requirements;
-    }
-
-    public void setRequirements(Requirements requirements) {
-        this.requirements = requirements;
-    }
-
-    public CardBack getCardBack() {
-        return cardBack;
-    }
-
-    public void setCardBack(CardBack cardBack) {
-        this.cardBack = cardBack;
-    }
-
-    public boolean isBuilt() {
-        return built;
-    }
-
-    public void setBuilt(boolean built) {
-        this.built = built;
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/SevenWondersClient.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/SevenWondersClient.java
deleted file mode 100644
index ade43677..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/SevenWondersClient.java
+++ /dev/null
@@ -1,32 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.TimeoutException;
-
-import org.hildan.jackstomp.JackstompClient;
-import org.hildan.jackstomp.JackstompSession;
-
-public class SevenWondersClient {
-
-    private static final String WEBSOCKET_ENDPOINT = "/seven-wonders-websocket";
-
-    private final JackstompClient client;
-
-    public SevenWondersClient() {
-        this(new JackstompClient());
-    }
-
-    public SevenWondersClient(JackstompClient client) {
-        this.client = client;
-    }
-
-    public SevenWondersSession connect(String serverUrl)
-            throws InterruptedException, ExecutionException, TimeoutException {
-        JackstompSession session = client.connect(serverUrl + WEBSOCKET_ENDPOINT);
-        return new SevenWondersSession(session);
-    }
-
-    public void stop() {
-        client.stop();
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/test/api/SevenWondersSession.java b/backend/src/test/java/org/luxons/sevenwonders/test/api/SevenWondersSession.java
deleted file mode 100644
index b6c36f8a..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/test/api/SevenWondersSession.java
+++ /dev/null
@@ -1,83 +0,0 @@
-package org.luxons.sevenwonders.test.api;
-
-import org.hildan.jackstomp.Channel;
-import org.hildan.jackstomp.JackstompSession;
-import org.luxons.sevenwonders.actions.ChooseNameAction;
-import org.luxons.sevenwonders.actions.CreateGameAction;
-import org.luxons.sevenwonders.actions.JoinGameAction;
-import org.luxons.sevenwonders.errors.UIError;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-
-public class SevenWondersSession {
-
-    private final JackstompSession session;
-
-    public SevenWondersSession(JackstompSession session) {
-        this.session = session;
-    }
-
-    public JackstompSession getJackstompSession() {
-        return session;
-    }
-
-    public void disconnect() {
-        session.disconnect();
-    }
-
-    public Channel<UIError> watchErrors() {
-        return session.subscribe("/user/queue/errors", UIError.class);
-    }
-
-    public ApiPlayer chooseName(String displayName) throws InterruptedException {
-        ChooseNameAction action = new ChooseNameAction();
-        action.setPlayerName(displayName);
-        return session.request(action, ApiPlayer.class, "/app/chooseName", "/user/queue/nameChoice");
-    }
-
-    public Channel<ApiLobby[]> watchGames() {
-        return session.subscribe("/topic/games", ApiLobby[].class);
-    }
-
-    public ApiLobby createGame(String gameName) throws InterruptedException {
-        CreateGameAction action = new CreateGameAction();
-        action.setGameName(gameName);
-
-        return session.request(action, ApiLobby.class, "/app/lobby/create", "/user/queue/lobby/joined");
-    }
-
-    public ApiLobby joinGame(long gameId) throws InterruptedException {
-        JoinGameAction action = new JoinGameAction();
-        action.setGameId(gameId);
-
-        ApiLobby lobby = session.request(action, ApiLobby.class, "/app/lobby/join", "/user/queue/lobby/joined");
-        assertNotNull(lobby);
-        assertEquals(gameId, lobby.getId());
-        return lobby;
-    }
-
-    public Channel<ApiLobby> watchLobbyUpdates(long gameId) {
-        return session.subscribe("/topic/lobby/" + gameId + "/updated", ApiLobby.class);
-    }
-
-    public Channel<ApiLobby> watchLobbyStart(long gameId) {
-        return session.subscribe("/topic/lobby/" + gameId + "/started", ApiLobby.class);
-    }
-
-    public void startGame(long gameId) throws InterruptedException {
-        String sendDestination = "/app/lobby/startGame";
-        String receiveDestination = "/topic/lobby/" + gameId + "/started";
-        boolean received = session.request(null, sendDestination, receiveDestination);
-        assertTrue(received);
-    }
-
-    public void sayReady() {
-        session.send("/app/game/sayReady", null);
-    }
-
-    public Channel<ApiPlayerTurnInfo> watchTurns() {
-        return session.subscribe("/user/queue/game/turn", ApiPlayerTurnInfo.class);
-    }
-}
diff --git a/backend/src/test/java/org/luxons/sevenwonders/validation/DestinationAccessValidatorTest.java b/backend/src/test/java/org/luxons/sevenwonders/validation/DestinationAccessValidatorTest.java
deleted file mode 100644
index 604b927d..00000000
--- a/backend/src/test/java/org/luxons/sevenwonders/validation/DestinationAccessValidatorTest.java
+++ /dev/null
@@ -1,140 +0,0 @@
-package org.luxons.sevenwonders.validation;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.luxons.sevenwonders.lobby.Lobby;
-import org.luxons.sevenwonders.lobby.Player;
-import org.luxons.sevenwonders.repositories.LobbyRepository;
-import org.luxons.sevenwonders.repositories.LobbyRepository.LobbyNotFoundException;
-
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-
-public class DestinationAccessValidatorTest {
-
-    private LobbyRepository lobbyRepository;
-
-    private DestinationAccessValidator destinationAccessValidator;
-
-    @Before
-    public void setup() {
-        lobbyRepository = new LobbyRepository();
-        destinationAccessValidator = new DestinationAccessValidator(lobbyRepository);
-    }
-
-    private Lobby createLobby(String gameName, String ownerUsername, String... otherPlayers) {
-        Player owner = new Player(ownerUsername, ownerUsername);
-        Lobby lobby = lobbyRepository.create(gameName, owner);
-        for (String playerName : otherPlayers) {
-            Player player = new Player(playerName, playerName);
-            lobby.addPlayer(player);
-        }
-        return lobby;
-    }
-
-    private void createGame(String gameName, String ownerUsername, String... otherPlayers) {
-        Lobby lobby = createLobby(gameName, ownerUsername, otherPlayers);
-        lobby.startGame();
-    }
-
-    @Test
-    public void validate_failsOnNullUser() {
-        assertFalse(destinationAccessValidator.hasAccess(null, "doesNotMatter"));
-    }
-
-    @Test
-    public void validate_successWhenNoReference() {
-        assertTrue(destinationAccessValidator.hasAccess("", ""));
-        assertTrue(destinationAccessValidator.hasAccess("", "test"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "test"));
-    }
-
-    @Test
-    public void validate_successWhenNoRefFollows() {
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game/"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby/"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/game/"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/lobby/"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game//suffix"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby//suffix"));
-    }
-
-    @Test
-    public void validate_successWhenRefIsNotANumber() {
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game/notANumber"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby/notANumber"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/game/notANumber"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/lobby/notANumber"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game/notANumber/suffix"));
-        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby/notANumber/suffix"));
-    }
-
-    @Test(expected = LobbyNotFoundException.class)
-    public void validate_failWhenNoLobbyExist() {
-        destinationAccessValidator.hasAccess("", "/lobby/0");
-    }
-
-    @Test(expected = LobbyNotFoundException.class)
-    public void validate_failWhenNoGameExist() {
-        destinationAccessValidator.hasAccess("", "/game/0");
-    }
-
-    @Test(expected = LobbyNotFoundException.class)
-    public void validate_failWhenReferencedLobbyDoesNotExist() {
-        createLobby("Test Game", "ownerUser1");
-        createLobby("Test Game 2", "ownerUser2");
-        destinationAccessValidator.hasAccess("doesNotMatter", "/lobby/3");
-    }
-
-    @Test(expected = LobbyNotFoundException.class)
-    public void validate_failWhenReferencedGameDoesNotExist() {
-        createGame("Test Game 1", "user1", "user2", "user3");
-        createGame("Test Game 2", "user4", "user5", "user6");
-        destinationAccessValidator.hasAccess("doesNotMatter", "/game/3");
-    }
-
-    @Test
-    public void validate_failWhenUserIsNotPartOfReferencedLobby() {
-        createLobby("Test Game", "ownerUser");
-        destinationAccessValidator.hasAccess("userNotInLobby", "/lobby/0");
-    }
-
-    @Test
-    public void validate_failWhenUserIsNotPartOfReferencedGame() {
-        createGame("Test Game", "ownerUser", "otherUser1", "otherUser2");
-        destinationAccessValidator.hasAccess("userNotInGame", "/game/0");
-    }
-
-    @Test
-    public void validate_successWhenUserIsOwnerOfReferencedLobby() {
-        createLobby("Test Game 1", "user1");
-        assertTrue(destinationAccessValidator.hasAccess("user1", "/lobby/0"));
-        createLobby("Test Game 2", "user2");
-        assertTrue(destinationAccessValidator.hasAccess("user2", "/lobby/1"));
-    }
-
-    @Test
-    public void validate_successWhenUserIsMemberOfReferencedLobby() {
-        createLobby("Test Game 1", "user1", "user2");
-        assertTrue(destinationAccessValidator.hasAccess("user2", "/lobby/0"));
-        createLobby("Test Game 2", "user3", "user4");
-        assertTrue(destinationAccessValidator.hasAccess("user4", "/lobby/1"));
-    }
-
-    @Test
-    public void validate_successWhenUserIsOwnerOfReferencedGame() {
-        createGame("Test Game 1", "owner1", "user2", "user3");
-        assertTrue(destinationAccessValidator.hasAccess("owner1", "/game/0"));
-        createGame("Test Game 2", "owner4", "user5", "user6");
-        assertTrue(destinationAccessValidator.hasAccess("owner4", "/game/1"));
-    }
-
-    @Test
-    public void validate_successWhenUserIsMemberOfReferencedGame() {
-        createGame("Test Game 1", "owner1", "user2", "user3");
-        assertTrue(destinationAccessValidator.hasAccess("user2", "/game/0"));
-        createGame("Test Game 2", "owner4", "user5", "user6");
-        assertTrue(destinationAccessValidator.hasAccess("user6", "/game/1"));
-    }
-
-}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/SevenWondersTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/SevenWondersTest.kt
new file mode 100644
index 00000000..cf6c7ce8
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/SevenWondersTest.kt
@@ -0,0 +1,151 @@
+package org.luxons.sevenwonders
+
+import org.junit.After
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.luxons.sevenwonders.test.api.SevenWondersClient
+import org.luxons.sevenwonders.test.api.SevenWondersSession
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment
+import org.springframework.boot.web.server.LocalServerPort
+import org.springframework.test.context.junit4.SpringRunner
+import java.util.concurrent.ExecutionException
+import java.util.concurrent.TimeUnit
+import java.util.concurrent.TimeoutException
+
+@RunWith(SpringRunner::class)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
+class SevenWondersTest {
+
+    @LocalServerPort
+    private val randomServerPort: Int = 0
+
+    private lateinit var client: SevenWondersClient
+
+    private lateinit var serverUrl: String
+
+    @Before
+    fun setUpClientAndUrl() {
+        client = SevenWondersClient()
+        serverUrl = "ws://localhost:$randomServerPort"
+    }
+
+    private fun disconnect(vararg sessions: SevenWondersSession) {
+        for (session in sessions) {
+            session.disconnect()
+        }
+    }
+
+    @Test
+    @Throws(InterruptedException::class, ExecutionException::class, TimeoutException::class)
+    fun chooseName() {
+        val session = client.connect(serverUrl)
+        val playerName = "Test User"
+        val player = session.chooseName(playerName)
+        assertNotNull(player)
+        assertEquals(playerName, player.displayName)
+        session.disconnect()
+    }
+
+    @Throws(InterruptedException::class, TimeoutException::class, ExecutionException::class)
+    private fun newPlayer(name: String): SevenWondersSession {
+        val otherSession = client.connect(serverUrl)
+        otherSession.chooseName(name)
+        return otherSession
+    }
+
+    @Test
+    @Throws(InterruptedException::class, ExecutionException::class, TimeoutException::class)
+    fun lobbySubscription_ignoredForOutsiders() {
+        val ownerSession = newPlayer("GameOwner")
+        val session1 = newPlayer("Player1")
+        val session2 = newPlayer("Player2")
+        val gameName = "Test Game"
+        val lobby = ownerSession.createGame(gameName)
+        session1.joinGame(lobby.id)
+        session2.joinGame(lobby.id)
+
+        val outsiderSession = newPlayer("Outsider")
+        val session = outsiderSession.jackstompSession
+        val started = session.subscribeEmptyMsgs("/topic/lobby/" + lobby.id + "/started")
+
+        ownerSession.startGame(lobby.id)
+        val nothing = started.next(1, TimeUnit.SECONDS)
+        assertNull(nothing)
+        disconnect(ownerSession, session1, session2, outsiderSession)
+    }
+
+    @Test
+    @Throws(InterruptedException::class, ExecutionException::class, TimeoutException::class)
+    fun createGame_success() {
+        val ownerSession = newPlayer("GameOwner")
+
+        val gameName = "Test Game"
+        val lobby = ownerSession.createGame(gameName)
+        assertNotNull(lobby)
+        assertEquals(gameName, lobby.name)
+
+        disconnect(ownerSession)
+    }
+
+    @Test
+    @Throws(InterruptedException::class, ExecutionException::class, TimeoutException::class)
+    fun createGame_seenByConnectedPlayers() {
+        val otherSession = newPlayer("OtherPlayer")
+        val games = otherSession.watchGames()
+
+        var receivedLobbies = games.next()
+        assertNotNull(receivedLobbies)
+        assertEquals(0, receivedLobbies.size.toLong())
+
+        val ownerSession = newPlayer("GameOwner")
+        val gameName = "Test Game"
+        val createdLobby = ownerSession.createGame(gameName)
+
+        receivedLobbies = games.next()
+        assertNotNull(receivedLobbies)
+        assertEquals(1, receivedLobbies.size.toLong())
+        val receivedLobby = receivedLobbies[0]
+        assertEquals(createdLobby.id, receivedLobby.id)
+        assertEquals(createdLobby.name, receivedLobby.name)
+
+        disconnect(ownerSession, otherSession)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun startGame_3players() {
+        val session1 = newPlayer("Player1")
+        val session2 = newPlayer("Player2")
+
+        val lobby = session1.createGame("Test Game")
+        session2.joinGame(lobby.id)
+
+        val session3 = newPlayer("Player3")
+        session3.joinGame(lobby.id)
+
+        session1.startGame(lobby.id)
+
+        val turns1 = session1.watchTurns()
+        val turns2 = session2.watchTurns()
+        val turns3 = session3.watchTurns()
+        session1.sayReady()
+        session2.sayReady()
+        session3.sayReady()
+        val turn1 = turns1.next()
+        val turn2 = turns2.next()
+        val turn3 = turns3.next()
+        assertNotNull(turn1)
+        assertNotNull(turn2)
+        assertNotNull(turn3)
+
+        disconnect(session1, session2, session3)
+    }
+
+    @After
+    fun tearDown() {
+        client.stop()
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/GameBrowserControllerTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/GameBrowserControllerTest.kt
new file mode 100644
index 00000000..96d4bc85
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/GameBrowserControllerTest.kt
@@ -0,0 +1,114 @@
+package org.luxons.sevenwonders.controllers
+
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.luxons.sevenwonders.actions.CreateGameAction
+import org.luxons.sevenwonders.actions.JoinGameAction
+import org.luxons.sevenwonders.controllers.GameBrowserController.UserAlreadyInGameException
+import org.luxons.sevenwonders.repositories.LobbyRepository
+import org.luxons.sevenwonders.repositories.PlayerNotFoundException
+import org.luxons.sevenwonders.repositories.PlayerRepository
+import org.luxons.sevenwonders.test.TestUtils
+
+class GameBrowserControllerTest {
+
+    private lateinit var playerRepository: PlayerRepository
+
+    private lateinit var gameBrowserController: GameBrowserController
+
+    @Before
+    fun setUp() {
+        playerRepository = PlayerRepository()
+        val lobbyRepository = LobbyRepository()
+        val template = TestUtils.createSimpMessagingTemplate()
+        val lobbyController = LobbyController(lobbyRepository, playerRepository, template)
+        gameBrowserController = GameBrowserController(lobbyController, lobbyRepository, playerRepository, template)
+    }
+
+    @Test
+    fun listGames_initiallyEmpty() {
+        val principal = TestPrincipal("testuser")
+        val games = gameBrowserController.listGames(principal)
+        assertTrue(games.isEmpty())
+    }
+
+    @Test
+    fun createGame_success() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val principal = TestPrincipal("testuser")
+
+        val action = CreateGameAction("Test Game")
+
+        val createdLobby = gameBrowserController.createGame(action, principal)
+
+        assertEquals("Test Game", createdLobby.name)
+
+        val games = gameBrowserController.listGames(principal)
+        assertFalse(games.isEmpty())
+        val lobby = games.iterator().next()
+        assertSame(lobby, createdLobby)
+        assertSame(player, lobby.getPlayers()[0])
+    }
+
+    @Test(expected = PlayerNotFoundException::class)
+    fun createGame_failsForUnknownPlayer() {
+        val principal = TestPrincipal("unknown")
+
+        val action = CreateGameAction("Test Game")
+        gameBrowserController.createGame(action, principal)
+    }
+
+    @Test(expected = UserAlreadyInGameException::class)
+    fun createGame_failsWhenAlreadyInGame() {
+        playerRepository.createOrUpdate("testuser", "Test User")
+        val principal = TestPrincipal("testuser")
+
+        val createGameAction1 = CreateGameAction("Test Game 1")
+
+        // auto-enters the game
+        gameBrowserController.createGame(createGameAction1, principal)
+
+        val createGameAction2 = CreateGameAction("Test Game 2")
+
+        // already in a game
+        gameBrowserController.createGame(createGameAction2, principal)
+    }
+
+    @Test
+    fun joinGame_success() {
+        val owner = playerRepository.createOrUpdate("testowner", "Test User Owner")
+        val ownerPrincipal = TestPrincipal("testowner")
+        val createGameAction = CreateGameAction("Test Game")
+
+        val createdLobby = gameBrowserController.createGame(createGameAction, ownerPrincipal)
+
+        val joiner = playerRepository.createOrUpdate("testjoiner", "Test User Joiner")
+        val joinerPrincipal = TestPrincipal("testjoiner")
+        val joinGameAction = JoinGameAction(createdLobby.id)
+
+        val joinedLobby = gameBrowserController.joinGame(joinGameAction, joinerPrincipal)
+
+        assertSame(createdLobby, joinedLobby)
+        assertSame(owner, joinedLobby.getPlayers()[0])
+        assertSame(joiner, joinedLobby.getPlayers()[1])
+    }
+
+    @Test(expected = UserAlreadyInGameException::class)
+    fun joinGame_failsWhenAlreadyInGame() {
+        playerRepository.createOrUpdate("testowner", "Test User Owner")
+        val ownerPrincipal = TestPrincipal("testowner")
+        val createGameAction = CreateGameAction("Test Game")
+
+        val createdLobby = gameBrowserController.createGame(createGameAction, ownerPrincipal)
+
+        playerRepository.createOrUpdate("testjoiner", "Test User Joiner")
+        val joinerPrincipal = TestPrincipal("testjoiner")
+        val joinGameAction = JoinGameAction(createdLobby.id)
+
+        // joins the game
+        gameBrowserController.joinGame(joinGameAction, joinerPrincipal)
+        // should fail because already in a game
+        gameBrowserController.joinGame(joinGameAction, joinerPrincipal)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/HomeControllerTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/HomeControllerTest.kt
new file mode 100644
index 00000000..b11ef878
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/HomeControllerTest.kt
@@ -0,0 +1,26 @@
+package org.luxons.sevenwonders.controllers
+
+import org.junit.Assert.*
+import org.junit.Test
+import org.luxons.sevenwonders.actions.ChooseNameAction
+import org.luxons.sevenwonders.repositories.PlayerRepository
+
+class HomeControllerTest {
+
+    @Test
+    fun chooseName() {
+        val playerRepository = PlayerRepository()
+        val homeController = HomeController(playerRepository)
+
+        val action = ChooseNameAction("Test User")
+        val principal = TestPrincipal("testuser")
+
+        val player = homeController.chooseName(action, principal)
+
+        assertSame(player, playerRepository.find("testuser"))
+        assertEquals("testuser", player.username)
+        assertEquals("Test User", player.displayName)
+        assertFalse(player.isInLobby)
+        assertFalse(player.isInGame)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/LobbyControllerTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/LobbyControllerTest.kt
new file mode 100644
index 00000000..6269ae40
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/LobbyControllerTest.kt
@@ -0,0 +1,199 @@
+package org.luxons.sevenwonders.controllers
+
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.luxons.sevenwonders.actions.ReorderPlayersAction
+import org.luxons.sevenwonders.actions.UpdateSettingsAction
+import org.luxons.sevenwonders.game.api.CustomizableSettings
+import org.luxons.sevenwonders.game.data.WonderSidePickMethod.ALL_A
+import org.luxons.sevenwonders.lobby.Lobby
+import org.luxons.sevenwonders.lobby.Player
+import org.luxons.sevenwonders.lobby.PlayerIsNotOwnerException
+import org.luxons.sevenwonders.lobby.PlayerNotInLobbyException
+import org.luxons.sevenwonders.lobby.State
+import org.luxons.sevenwonders.repositories.LobbyRepository
+import org.luxons.sevenwonders.repositories.PlayerNotFoundException
+import org.luxons.sevenwonders.repositories.PlayerRepository
+import org.luxons.sevenwonders.test.TestUtils
+import java.util.Arrays
+import java.util.HashMap
+
+class LobbyControllerTest {
+
+    private lateinit var playerRepository: PlayerRepository
+
+    private lateinit var lobbyRepository: LobbyRepository
+
+    private lateinit var lobbyController: LobbyController
+
+    @Before
+    fun setUp() {
+        val template = TestUtils.createSimpMessagingTemplate()
+        playerRepository = PlayerRepository()
+        lobbyRepository = LobbyRepository()
+        lobbyController = LobbyController(lobbyRepository, playerRepository, template)
+    }
+
+    @Test
+    fun init_succeeds() {
+        val owner = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", owner)
+
+        assertTrue(lobby.getPlayers().contains(owner))
+        assertSame(lobby, owner.lobby)
+        assertEquals(owner.username, lobby.owner)
+        assertTrue(owner.isInLobby)
+        assertFalse(owner.isInGame)
+    }
+
+    @Test(expected = PlayerNotFoundException::class)
+    fun leave_failsWhenPlayerDoesNotExist() {
+        val principal = TestPrincipal("I don't exist")
+        lobbyController.leave(principal)
+    }
+
+    @Test(expected = PlayerNotInLobbyException::class)
+    fun leave_failsWhenNotInLobby() {
+        playerRepository.createOrUpdate("testuser", "Test User")
+        val principal = TestPrincipal("testuser")
+        lobbyController.leave(principal)
+    }
+
+    @Test
+    fun leave_succeedsWhenInALobby_asOwner() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        val principal = TestPrincipal("testuser")
+        lobbyController.leave(principal)
+
+        assertFalse(lobbyRepository.list().contains(lobby))
+        assertFalse(player.isInLobby)
+        assertFalse(player.isInGame)
+    }
+
+    @Test
+    fun leave_succeedsWhenInALobby_asPeasant() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+        val player2 = addPlayer(lobby, "testuser2")
+
+        val principal = TestPrincipal("testuser2")
+        lobbyController.leave(principal)
+
+        assertFalse(lobby.getPlayers().contains(player2))
+        assertFalse(player2.isInLobby)
+        assertFalse(player2.isInGame)
+    }
+
+    @Test
+    fun reorderPlayers_succeedsForOwner() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        val player2 = addPlayer(lobby, "testuser2")
+        val player3 = addPlayer(lobby, "testuser3")
+        val player4 = addPlayer(lobby, "testuser4")
+
+        val players = Arrays.asList(player, player2, player3, player4)
+        assertEquals(players, lobby.getPlayers())
+
+        val reorderedPlayers = Arrays.asList(player3, player, player2, player4)
+        val playerNames = reorderedPlayers.map { it.username }
+        val reorderPlayersAction = ReorderPlayersAction(playerNames)
+
+        val principal = TestPrincipal("testuser")
+        lobbyController.reorderPlayers(reorderPlayersAction, principal)
+
+        assertEquals(reorderedPlayers, lobby.getPlayers())
+    }
+
+    @Test(expected = PlayerIsNotOwnerException::class)
+    fun reorderPlayers_failsForPeasant() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        val player2 = addPlayer(lobby, "testuser2")
+        val player3 = addPlayer(lobby, "testuser3")
+
+        val reorderedPlayers = Arrays.asList(player3, player, player2)
+        val playerNames = reorderedPlayers.map { it.username }
+        val reorderPlayersAction = ReorderPlayersAction(playerNames)
+
+        val principal = TestPrincipal("testuser2")
+        lobbyController.reorderPlayers(reorderPlayersAction, principal)
+    }
+
+    @Test
+    fun updateSettings_succeedsForOwner() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        addPlayer(lobby, "testuser2")
+        addPlayer(lobby, "testuser3")
+        addPlayer(lobby, "testuser4")
+
+        assertEquals(CustomizableSettings(), lobby.settings)
+
+        val newSettings = CustomizableSettings(12L, 5, ALL_A, 5, 5, 4, 10, 2, HashMap())
+        val updateSettingsAction = UpdateSettingsAction(newSettings)
+
+        val principal = TestPrincipal("testuser")
+        lobbyController.updateSettings(updateSettingsAction, principal)
+
+        assertEquals(newSettings, lobby.settings)
+    }
+
+    @Test(expected = PlayerIsNotOwnerException::class)
+    fun updateSettings_failsForPeasant() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        addPlayer(lobby, "testuser2")
+        addPlayer(lobby, "testuser3")
+
+        val updateSettingsAction = UpdateSettingsAction(CustomizableSettings())
+
+        val principal = TestPrincipal("testuser2")
+        lobbyController.updateSettings(updateSettingsAction, principal)
+    }
+
+    @Test
+    fun startGame_succeedsForOwner() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        addPlayer(lobby, "testuser2")
+        addPlayer(lobby, "testuser3")
+        addPlayer(lobby, "testuser4")
+
+        val principal = TestPrincipal("testuser")
+        lobbyController.startGame(principal)
+
+        assertSame(State.PLAYING, lobby.state)
+    }
+
+    @Test(expected = PlayerIsNotOwnerException::class)
+    fun startGame_failsForPeasant() {
+        val player = playerRepository.createOrUpdate("testuser", "Test User")
+        val lobby = lobbyRepository.create("Test Game", player)
+
+        addPlayer(lobby, "testuser2")
+        addPlayer(lobby, "testuser3")
+
+        val principal = TestPrincipal("testuser2")
+        lobbyController.startGame(principal)
+    }
+
+    private fun addPlayer(lobby: Lobby, username: String): Player {
+        val player = playerRepository.createOrUpdate(username, username)
+        lobby.addPlayer(player)
+
+        assertTrue(lobby.getPlayers().contains(player))
+        assertSame(lobby, player.lobby)
+        assertTrue(player.isInLobby)
+        assertFalse(player.isInGame)
+        return player
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/TestPrincipal.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/TestPrincipal.kt
new file mode 100644
index 00000000..ce3cf317
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/controllers/TestPrincipal.kt
@@ -0,0 +1,10 @@
+package org.luxons.sevenwonders.controllers
+
+import java.security.Principal
+
+internal class TestPrincipal(private val name: String) : Principal {
+
+    override fun getName(): String {
+        return name
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/lobby/LobbyTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/lobby/LobbyTest.kt
new file mode 100644
index 00000000..3abdde3b
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/lobby/LobbyTest.kt
@@ -0,0 +1,229 @@
+package org.luxons.sevenwonders.lobby
+
+import org.junit.Assert.*
+import org.junit.Assume.assumeTrue
+import org.junit.Before
+import org.junit.BeforeClass
+import org.junit.Rule
+import org.junit.Test
+import org.junit.experimental.theories.DataPoints
+import org.junit.experimental.theories.Theories
+import org.junit.experimental.theories.Theory
+import org.junit.rules.ExpectedException
+import org.junit.runner.RunWith
+import org.luxons.sevenwonders.game.api.CustomizableSettings
+import org.luxons.sevenwonders.game.data.GameDefinition
+import org.luxons.sevenwonders.game.data.GameDefinitionLoader
+import org.luxons.sevenwonders.lobby.Lobby.*
+import java.util.Arrays
+
+@RunWith(Theories::class)
+class LobbyTest {
+
+    @JvmField
+    @Rule
+    var thrown = ExpectedException.none()
+
+    private lateinit var gameOwner: Player
+
+    private lateinit var lobby: Lobby
+
+    @Before
+    fun setUp() {
+        gameOwner = Player("gameowner", "Game owner")
+        lobby = Lobby(0, "Test Game", gameOwner, gameDefinition)
+    }
+
+    @Test
+    fun testId() {
+        val lobby = Lobby(5, "Test Game", gameOwner, gameDefinition)
+        assertEquals(5, lobby.id)
+    }
+
+    @Test
+    fun testName() {
+        val lobby = Lobby(5, "Test Game", gameOwner, gameDefinition)
+        assertEquals("Test Game", lobby.name)
+    }
+
+    @Test
+    fun testOwner() {
+        val lobby = Lobby(5, "Test Game", gameOwner, gameDefinition)
+        assertSame(gameOwner, lobby.getPlayers()[0])
+        assertSame(lobby, gameOwner.lobby)
+    }
+
+    @Test
+    fun isOwner_falseWhenNull() {
+        assertFalse(lobby.isOwner(null))
+    }
+
+    @Test
+    fun isOwner_falseWhenEmptyString() {
+        assertFalse(lobby.isOwner(""))
+    }
+
+    @Test
+    fun isOwner_falseWhenGarbageString() {
+        assertFalse(lobby.isOwner("this is garbage"))
+    }
+
+    @Test
+    fun isOwner_trueWhenOwnerUsername() {
+        assertTrue(lobby.isOwner(gameOwner.username))
+    }
+
+    @Test
+    fun isOwner_falseWhenOtherPlayerName() {
+        val player = Player("testuser", "Test User")
+        lobby.addPlayer(player)
+        assertFalse(lobby.isOwner(player.username))
+    }
+
+    @Test
+    fun addPlayer_success() {
+        val player = Player("testuser", "Test User")
+        lobby.addPlayer(player)
+        assertTrue(lobby.containsUser("testuser"))
+        assertSame(lobby, player.lobby)
+    }
+
+    @Test(expected = PlayerNameAlreadyUsedException::class)
+    fun addPlayer_failsOnSameName() {
+        val player = Player("testuser", "Test User")
+        val player2 = Player("testuser2", "Test User")
+        lobby.addPlayer(player)
+        lobby.addPlayer(player2)
+    }
+
+    @Test(expected = PlayerOverflowException::class)
+    fun addPlayer_playerOverflowWhenTooMany() {
+        // the owner + the max number gives an overflow
+        addPlayers(gameDefinition.maxPlayers)
+    }
+
+    @Test(expected = GameAlreadyStartedException::class)
+    fun addPlayer_failWhenGameStarted() {
+        // total with owner is the minimum
+        addPlayers(gameDefinition.minPlayers - 1)
+        lobby.startGame()
+        lobby.addPlayer(Player("soonerNextTime", "The Late Guy"))
+    }
+
+    private fun addPlayers(nbPlayers: Int) {
+        for (i in 0 until nbPlayers) {
+            val player = Player("testuser$i", "Test User $i")
+            lobby.addPlayer(player)
+        }
+    }
+
+    @Test(expected = UnknownPlayerException::class)
+    fun removePlayer_failsWhenNotPresent() {
+        lobby.removePlayer("anyname")
+    }
+
+    @Test
+    fun removePlayer_success() {
+        val player = Player("testuser", "Test User")
+        lobby.addPlayer(player)
+        assertTrue(player.isInLobby)
+        assertFalse(player.isInGame)
+
+        lobby.removePlayer("testuser")
+        assertFalse(lobby.containsUser("testuser"))
+        assertFalse(player.isInLobby)
+        assertFalse(player.isInGame)
+    }
+
+    @Test
+    fun reorderPlayers_success() {
+        val player1 = Player("testuser1", "Test User 1")
+        val player2 = Player("testuser2", "Test User 2")
+        val player3 = Player("testuser3", "Test User 3")
+        lobby.addPlayer(player1)
+        lobby.addPlayer(player2)
+        lobby.addPlayer(player3)
+        lobby.reorderPlayers(Arrays.asList("testuser3", "testuser1", "testuser2"))
+        assertEquals("testuser3", lobby.getPlayers()[0].username)
+        assertEquals("testuser1", lobby.getPlayers()[1].username)
+        assertEquals("testuser2", lobby.getPlayers()[2].username)
+    }
+
+    @Test(expected = UnknownPlayerException::class)
+    fun reorderPlayers_failsOnUnknownPlayer() {
+        val player1 = Player("testuser1", "Test User 1")
+        val player2 = Player("testuser2", "Test User 2")
+        val player3 = Player("testuser3", "Test User 3")
+        lobby.addPlayer(player1)
+        lobby.addPlayer(player2)
+        lobby.addPlayer(player3)
+        lobby.reorderPlayers(Arrays.asList("unknown", "testuser1", "testuser2"))
+    }
+
+    @Theory
+    fun startGame_failsBelowMinPlayers(nbPlayers: Int) {
+        assumeTrue(nbPlayers < gameDefinition.minPlayers)
+        thrown.expect(PlayerUnderflowException::class.java)
+        // there is already the owner
+        addPlayers(nbPlayers - 1)
+        lobby.startGame()
+    }
+
+    @Theory
+    fun startGame_succeedsAboveMinPlayers(nbPlayers: Int) {
+        assumeTrue(nbPlayers >= gameDefinition.minPlayers)
+        assumeTrue(nbPlayers <= gameDefinition.maxPlayers)
+        // there is already the owner
+        addPlayers(nbPlayers - 1)
+
+        assertEquals(nbPlayers, lobby.getPlayers().size)
+        lobby.getPlayers().forEach {
+            assertSame(lobby, it.lobby)
+            assertTrue(it.isInLobby)
+            assertFalse(it.isInGame)
+        }
+
+        val game = lobby.startGame()
+        assertNotNull(game)
+        lobby.getPlayers().forEachIndexed { index, it ->
+            assertSame(index, it.index)
+            assertSame(lobby, it.lobby)
+            assertSame(game, it.game)
+            assertTrue(it.isInLobby)
+            assertTrue(it.isInGame)
+        }
+    }
+
+    @Test
+    fun startGame_switchesState() {
+        assertTrue(lobby.state === State.LOBBY)
+        // there is already the owner
+        addPlayers(gameDefinition.minPlayers - 1)
+        lobby.startGame()
+        assertTrue(lobby.state === State.PLAYING)
+    }
+
+    @Test
+    fun setSettings() {
+        val settings = CustomizableSettings()
+        lobby.settings = settings
+        assertSame(settings, lobby.settings)
+    }
+
+    companion object {
+
+        private lateinit var gameDefinition: GameDefinition
+
+        @JvmStatic
+        @DataPoints
+        fun nbPlayers(): IntArray {
+            return intArrayOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
+        }
+
+        @JvmStatic
+        @BeforeClass
+        fun loadDefinition() {
+            gameDefinition = GameDefinitionLoader().gameDefinition
+        }
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/repositories/LobbyRepositoryTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/repositories/LobbyRepositoryTest.kt
new file mode 100644
index 00000000..a5009d2a
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/repositories/LobbyRepositoryTest.kt
@@ -0,0 +1,70 @@
+package org.luxons.sevenwonders.repositories
+
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.luxons.sevenwonders.lobby.Player
+
+class LobbyRepositoryTest {
+
+    private lateinit var repository: LobbyRepository
+
+    @Before
+    fun setUp() {
+        repository = LobbyRepository()
+    }
+
+    @Test
+    fun list_initiallyEmpty() {
+        assertTrue(repository.list().isEmpty())
+    }
+
+    @Test
+    fun list_returnsAllLobbies() {
+        val owner = Player("owner", "The Owner")
+        val lobby1 = repository.create("Test Name 1", owner)
+        val lobby2 = repository.create("Test Name 2", owner)
+        assertTrue(repository.list().contains(lobby1))
+        assertTrue(repository.list().contains(lobby2))
+    }
+
+    @Test
+    fun create_withCorrectOwner() {
+        val owner = Player("owner", "The Owner")
+        val lobby = repository.create("Test Name", owner)
+        assertTrue(lobby.isOwner(owner.username))
+    }
+
+    @Test(expected = LobbyNotFoundException::class)
+    fun find_failsOnUnknownId() {
+        repository.find(123)
+    }
+
+    @Test
+    fun find_returnsTheSameObject() {
+        val owner = Player("owner", "The Owner")
+        val lobby1 = repository.create("Test Name 1", owner)
+        val lobby2 = repository.create("Test Name 2", owner)
+        assertSame(lobby1, repository.find(lobby1.id))
+        assertSame(lobby2, repository.find(lobby2.id))
+    }
+
+    @Test(expected = LobbyNotFoundException::class)
+    fun remove_failsOnUnknownId() {
+        repository.remove(123)
+    }
+
+    @Test
+    fun remove_succeeds() {
+        val owner = Player("owner", "The Owner")
+        val lobby1 = repository.create("Test Name 1", owner)
+        assertNotNull(repository.find(lobby1.id))
+        repository.remove(lobby1.id)
+        try {
+            repository.find(lobby1.id)
+            fail() // the call to find() should have failed
+        } catch (e: LobbyNotFoundException) {
+            // the lobby has been properly removed
+        }
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/repositories/PlayerRepositoryTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/repositories/PlayerRepositoryTest.kt
new file mode 100644
index 00000000..64e3d8fd
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/repositories/PlayerRepositoryTest.kt
@@ -0,0 +1,67 @@
+package org.luxons.sevenwonders.repositories
+
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+
+class PlayerRepositoryTest {
+
+    private lateinit var repository: PlayerRepository
+
+    @Before
+    fun setUp() {
+        repository = PlayerRepository()
+    }
+
+    @Test
+    fun contains_falseIfNoUserAdded() {
+        assertFalse(repository.contains("anyUsername"))
+    }
+
+    @Test
+    fun contains_trueForCreatedPlayer() {
+        repository.createOrUpdate("player1", "Player 1")
+        assertTrue(repository.contains("player1"))
+    }
+
+    @Test
+    fun createOrUpdate_createsProperly() {
+        val player1 = repository.createOrUpdate("player1", "Player 1")
+        assertEquals("player1", player1.username)
+        assertEquals("Player 1", player1.displayName)
+    }
+
+    @Test
+    fun createOrUpdate_updatesDisplayName() {
+        val player1 = repository.createOrUpdate("player1", "Player 1")
+        val player1Updated = repository.createOrUpdate("player1", "Much Better Name")
+        assertSame(player1, player1Updated)
+        assertEquals("Much Better Name", player1Updated.displayName)
+    }
+
+    @Test(expected = PlayerNotFoundException::class)
+    fun find_failsOnUnknownUsername() {
+        repository.find("anyUsername")
+    }
+
+    @Test
+    fun find_returnsTheSameObject() {
+        val player1 = repository.createOrUpdate("player1", "Player 1")
+        val player2 = repository.createOrUpdate("player2", "Player 2")
+        assertSame(player1, repository.find("player1"))
+        assertSame(player2, repository.find("player2"))
+    }
+
+    @Test(expected = PlayerNotFoundException::class)
+    fun remove_failsOnUnknownUsername() {
+        repository.remove("anyUsername")
+    }
+
+    @Test
+    fun remove_succeeds() {
+        repository.createOrUpdate("player1", "Player 1")
+        assertTrue(repository.contains("player1"))
+        repository.remove("player1")
+        assertFalse(repository.contains("player1"))
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/TestUtils.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/TestUtils.kt
new file mode 100644
index 00000000..51db8d91
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/TestUtils.kt
@@ -0,0 +1,21 @@
+package org.luxons.sevenwonders.test
+
+import org.springframework.messaging.Message
+import org.springframework.messaging.MessageChannel
+import org.springframework.messaging.simp.SimpMessagingTemplate
+
+object TestUtils {
+
+    fun createSimpMessagingTemplate(): SimpMessagingTemplate {
+        val messageChannel = object : MessageChannel {
+            override fun send(message: Message<*>): Boolean {
+                return true
+            }
+
+            override fun send(message: Message<*>, timeout: Long): Boolean {
+                return true
+            }
+        }
+        return SimpMessagingTemplate(messageChannel)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiBoard.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiBoard.kt
new file mode 100644
index 00000000..a3d54773
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiBoard.kt
@@ -0,0 +1,64 @@
+package org.luxons.sevenwonders.test.api
+
+import java.util.Objects
+
+import org.luxons.sevenwonders.game.cards.Card
+import org.luxons.sevenwonders.game.effects.SpecialAbility
+
+class ApiBoard {
+
+    var wonder: ApiWonder? = null
+
+    var playerIndex: Int = 0
+
+    var playedCards: List<ApiCard>? = null
+
+    var production: ApiProduction? = null
+
+    var publicProduction: ApiProduction? = null
+
+    var science: ApiScience? = null
+
+    var tradingRules: ApiTradingRules? = null
+
+    var military: ApiMilitary? = null
+
+    var specialAbilities: Set<SpecialAbility>? = null
+
+    var consumedFreeCards: Map<Int, Boolean>? = null
+
+    var copiedGuild: Card? = null
+
+    var gold: Int = 0
+
+    var pointsPer3Gold: Int = 0
+
+    override fun equals(o: Any?): Boolean {
+        if (this === o) {
+            return true
+        }
+        if (o == null || javaClass != o.javaClass) {
+            return false
+        }
+        val apiBoard = o as ApiBoard?
+        return (playerIndex == apiBoard!!.playerIndex && gold == apiBoard.gold && pointsPer3Gold == apiBoard.pointsPer3Gold && wonder == apiBoard.wonder && playedCards == apiBoard.playedCards && production == apiBoard.production && publicProduction == apiBoard.publicProduction && science == apiBoard.science && tradingRules == apiBoard.tradingRules && military == apiBoard.military && specialAbilities == apiBoard.specialAbilities && consumedFreeCards == apiBoard.consumedFreeCards && copiedGuild == apiBoard.copiedGuild)
+    }
+
+    override fun hashCode(): Int {
+        return Objects.hash(
+            wonder,
+            playerIndex,
+            playedCards,
+            production,
+            publicProduction,
+            science,
+            tradingRules,
+            military,
+            specialAbilities,
+            consumedFreeCards,
+            copiedGuild,
+            gold,
+            pointsPer3Gold
+        )
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiCard.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiCard.kt
new file mode 100644
index 00000000..2f473367
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiCard.kt
@@ -0,0 +1,38 @@
+package org.luxons.sevenwonders.test.api
+
+import java.util.Objects
+
+import org.luxons.sevenwonders.game.cards.Color
+import org.luxons.sevenwonders.game.cards.Requirements
+
+class ApiCard {
+
+    var name: String? = null
+
+    var color: Color? = null
+
+    var requirements: Requirements? = null
+
+    var chainParent: String? = null
+
+    var chainChildren: List<String>? = null
+
+    var image: String? = null
+
+    var back: ApiCardBack? = null
+
+    override fun equals(o: Any?): Boolean {
+        if (this === o) {
+            return true
+        }
+        if (o == null || javaClass != o.javaClass) {
+            return false
+        }
+        val apiCard = o as ApiCard?
+        return name == apiCard!!.name && color === apiCard.color && requirements == apiCard.requirements && chainParent == apiCard.chainParent && chainChildren == apiCard.chainChildren && image == apiCard.image && back == apiCard.back
+    }
+
+    override fun hashCode(): Int {
+        return Objects.hash(name, color, requirements, chainParent, chainChildren, image, back)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiCardBack.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiCardBack.kt
new file mode 100644
index 00000000..15bfd009
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiCardBack.kt
@@ -0,0 +1,6 @@
+package org.luxons.sevenwonders.test.api
+
+class ApiCardBack {
+
+    var image: String? = null
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiEffect.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiEffect.kt
new file mode 100644
index 00000000..afe8809f
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiEffect.kt
@@ -0,0 +1,3 @@
+package org.luxons.sevenwonders.test.api
+
+class ApiEffect
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiHandCard.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiHandCard.kt
new file mode 100644
index 00000000..003c3783
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiHandCard.kt
@@ -0,0 +1,16 @@
+package org.luxons.sevenwonders.test.api
+
+/**
+ * A card with contextual information relative to the hand it is sitting in. The extra information is especially
+ * useful because it frees the client from a painful business logic implementation.
+ */
+class ApiHandCard {
+
+    var card: ApiCard? = null
+
+    var isChainable: Boolean = false
+
+    var isFree: Boolean = false
+
+    var isPlayable: Boolean = false
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiLobby.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiLobby.kt
new file mode 100644
index 00000000..5bc4dad6
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiLobby.kt
@@ -0,0 +1,36 @@
+package org.luxons.sevenwonders.test.api
+
+import java.util.Objects
+
+import org.luxons.sevenwonders.game.api.CustomizableSettings
+import org.luxons.sevenwonders.lobby.State
+
+class ApiLobby {
+
+    var id: Long = 0
+
+    var name: String? = null
+
+    var owner: String? = null
+
+    var players: List<ApiPlayer>? = null
+
+    var settings: CustomizableSettings? = null
+
+    var state: State? = null
+
+    override fun equals(o: Any?): Boolean {
+        if (this === o) {
+            return true
+        }
+        if (o == null || javaClass != o.javaClass) {
+            return false
+        }
+        val apiLobby = o as ApiLobby?
+        return (id == apiLobby!!.id && name == apiLobby.name && owner == apiLobby.owner && players == apiLobby.players && settings == apiLobby.settings && state === apiLobby.state)
+    }
+
+    override fun hashCode(): Int {
+        return Objects.hash(id, name, owner, players, settings, state)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiMilitary.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiMilitary.kt
new file mode 100644
index 00000000..23e4f34c
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiMilitary.kt
@@ -0,0 +1,10 @@
+package org.luxons.sevenwonders.test.api
+
+class ApiMilitary {
+
+    var nbShields = 0
+
+    var totalPoints = 0
+
+    var nbDefeatTokens = 0
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiPlayer.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiPlayer.kt
new file mode 100644
index 00000000..fc4c01fb
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiPlayer.kt
@@ -0,0 +1,27 @@
+package org.luxons.sevenwonders.test.api
+
+import java.util.Objects
+
+class ApiPlayer {
+
+    val username: String? = null
+
+    var displayName: String? = null
+
+    var index: Int = 0
+
+    override fun equals(o: Any?): Boolean {
+        if (this === o) {
+            return true
+        }
+        if (o == null || javaClass != o.javaClass) {
+            return false
+        }
+        val apiPlayer = o as ApiPlayer?
+        return index == apiPlayer!!.index && username == apiPlayer.username && displayName == apiPlayer.displayName
+    }
+
+    override fun hashCode(): Int {
+        return Objects.hash(username, displayName, index)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiPlayerTurnInfo.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiPlayerTurnInfo.kt
new file mode 100644
index 00000000..ae22cdb6
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiPlayerTurnInfo.kt
@@ -0,0 +1,37 @@
+package org.luxons.sevenwonders.test.api
+
+import java.util.Objects
+
+import org.luxons.sevenwonders.game.api.Action
+
+class ApiPlayerTurnInfo {
+
+    var playerIndex: Int = 0
+
+    var table: ApiTable? = null
+
+    var currentAge: Int = 0
+
+    var action: Action? = null
+
+    var hand: List<ApiHandCard>? = null
+
+    var neighbourGuildCards: List<ApiCard>? = null
+
+    var message: String? = null
+
+    override fun equals(o: Any?): Boolean {
+        if (this === o) {
+            return true
+        }
+        if (o == null || javaClass != o.javaClass) {
+            return false
+        }
+        val that = o as ApiPlayerTurnInfo?
+        return (playerIndex == that!!.playerIndex && currentAge == that.currentAge && table == that.table && action === that.action && hand == that.hand && neighbourGuildCards == that.neighbourGuildCards && message == that.message)
+    }
+
+    override fun hashCode(): Int {
+        return Objects.hash(playerIndex, table, currentAge, action, hand, neighbourGuildCards, message)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiProduction.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiProduction.kt
new file mode 100644
index 00000000..2ab7c343
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiProduction.kt
@@ -0,0 +1,11 @@
+package org.luxons.sevenwonders.test.api
+
+import org.luxons.sevenwonders.game.resources.ResourceType
+import org.luxons.sevenwonders.game.resources.Resources
+
+class ApiProduction {
+
+    var fixedResources: Resources? = null
+
+    var alternativeResources: Set<Set<ResourceType>>? = null
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiScience.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiScience.kt
new file mode 100644
index 00000000..5e619904
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiScience.kt
@@ -0,0 +1,10 @@
+package org.luxons.sevenwonders.test.api
+
+import org.luxons.sevenwonders.game.boards.ScienceType
+
+class ApiScience {
+
+    var quantities: Map<ScienceType, Int>? = null
+
+    var jokers: Int = 0
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiTable.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiTable.kt
new file mode 100644
index 00000000..cffbdf2f
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiTable.kt
@@ -0,0 +1,23 @@
+package org.luxons.sevenwonders.test.api
+
+import org.luxons.sevenwonders.game.cards.HandRotationDirection
+import org.luxons.sevenwonders.game.moves.Move
+
+class ApiTable {
+
+    var nbPlayers: Int = 0
+
+    var boards: List<ApiBoard>? = null
+
+    var currentAge = 0
+
+    var handRotationDirection: HandRotationDirection? = null
+
+    var lastPlayedMoves: List<Move>? = null
+
+    var neighbourGuildCards: List<ApiCard>? = null
+
+    fun increaseCurrentAge() {
+        this.currentAge++
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiTradingRules.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiTradingRules.kt
new file mode 100644
index 00000000..fcebe59e
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiTradingRules.kt
@@ -0,0 +1,9 @@
+package org.luxons.sevenwonders.test.api
+
+import org.luxons.sevenwonders.game.resources.Provider
+import org.luxons.sevenwonders.game.resources.ResourceType
+
+class ApiTradingRules {
+
+    var costs: Map<ResourceType, Map<Provider, Int>>? = null
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiWonder.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiWonder.kt
new file mode 100644
index 00000000..1efe7917
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiWonder.kt
@@ -0,0 +1,16 @@
+package org.luxons.sevenwonders.test.api
+
+import org.luxons.sevenwonders.game.resources.ResourceType
+
+class ApiWonder {
+
+    private val name: String? = null
+
+    private val initialResource: ResourceType? = null
+
+    private val stages: List<ApiWonderStage>? = null
+
+    private val image: String? = null
+
+    private val nbBbuiltStages: Int = 0
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiWonderStage.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiWonderStage.kt
new file mode 100644
index 00000000..41925a55
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/ApiWonderStage.kt
@@ -0,0 +1,13 @@
+package org.luxons.sevenwonders.test.api
+
+import org.luxons.sevenwonders.game.cards.CardBack
+import org.luxons.sevenwonders.game.cards.Requirements
+
+class ApiWonderStage {
+
+    var requirements: Requirements? = null
+
+    var cardBack: CardBack? = null
+
+    var isBuilt: Boolean = false
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/SevenWondersClient.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/SevenWondersClient.kt
new file mode 100644
index 00000000..d98e932e
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/SevenWondersClient.kt
@@ -0,0 +1,25 @@
+package org.luxons.sevenwonders.test.api
+
+import java.util.concurrent.ExecutionException
+import java.util.concurrent.TimeoutException
+
+import org.hildan.jackstomp.JackstompClient
+import org.hildan.jackstomp.JackstompSession
+
+class SevenWondersClient @JvmOverloads constructor(private val client: JackstompClient = JackstompClient()) {
+
+    @Throws(InterruptedException::class, ExecutionException::class, TimeoutException::class)
+    fun connect(serverUrl: String): SevenWondersSession {
+        val session = client.connect(serverUrl + WEBSOCKET_ENDPOINT)
+        return SevenWondersSession(session)
+    }
+
+    fun stop() {
+        client.stop()
+    }
+
+    companion object {
+
+        private val WEBSOCKET_ENDPOINT = "/seven-wonders-websocket"
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/SevenWondersSession.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/SevenWondersSession.kt
new file mode 100644
index 00000000..90b40cb0
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/test/api/SevenWondersSession.kt
@@ -0,0 +1,70 @@
+package org.luxons.sevenwonders.test.api
+
+import org.hildan.jackstomp.Channel
+import org.hildan.jackstomp.JackstompSession
+import org.junit.Assert.*
+import org.luxons.sevenwonders.actions.ChooseNameAction
+import org.luxons.sevenwonders.actions.CreateGameAction
+import org.luxons.sevenwonders.actions.JoinGameAction
+import org.luxons.sevenwonders.errors.ErrorDTO
+
+class SevenWondersSession(val jackstompSession: JackstompSession) {
+
+    fun disconnect() {
+        jackstompSession.disconnect()
+    }
+
+    fun watchErrors(): Channel<ErrorDTO> {
+        return jackstompSession.subscribe("/user/queue/errors", ErrorDTO::class.java)
+    }
+
+    @Throws(InterruptedException::class)
+    fun chooseName(displayName: String): ApiPlayer {
+        val action = ChooseNameAction(displayName)
+        return jackstompSession.request(action, ApiPlayer::class.java, "/app/chooseName", "/user/queue/nameChoice")
+    }
+
+    fun watchGames(): Channel<Array<ApiLobby>> {
+        return jackstompSession.subscribe("/topic/games", Array<ApiLobby>::class.java)
+    }
+
+    @Throws(InterruptedException::class)
+    fun createGame(gameName: String): ApiLobby {
+        val action = CreateGameAction(gameName)
+        return jackstompSession.request(action, ApiLobby::class.java, "/app/lobby/create", "/user/queue/lobby/joined")
+    }
+
+    @Throws(InterruptedException::class)
+    fun joinGame(gameId: Long): ApiLobby {
+        val action = JoinGameAction(gameId)
+        val lobby =
+            jackstompSession.request(action, ApiLobby::class.java, "/app/lobby/join", "/user/queue/lobby/joined")
+        assertNotNull(lobby)
+        assertEquals(gameId, lobby.id)
+        return lobby
+    }
+
+    fun watchLobbyUpdates(gameId: Long): Channel<ApiLobby> {
+        return jackstompSession.subscribe("/topic/lobby/$gameId/updated", ApiLobby::class.java)
+    }
+
+    fun watchLobbyStart(gameId: Long): Channel<ApiLobby> {
+        return jackstompSession.subscribe("/topic/lobby/$gameId/started", ApiLobby::class.java)
+    }
+
+    @Throws(InterruptedException::class)
+    fun startGame(gameId: Long) {
+        val sendDestination = "/app/lobby/startGame"
+        val receiveDestination = "/topic/lobby/$gameId/started"
+        val received = jackstompSession.request(null, sendDestination, receiveDestination)
+        assertTrue(received)
+    }
+
+    fun sayReady() {
+        jackstompSession.send("/app/game/sayReady", "")
+    }
+
+    fun watchTurns(): Channel<ApiPlayerTurnInfo> {
+        return jackstompSession.subscribe("/user/queue/game/turn", ApiPlayerTurnInfo::class.java)
+    }
+}
diff --git a/backend/src/test/kotlin/org/luxons/sevenwonders/validation/DestinationAccessValidatorTest.kt b/backend/src/test/kotlin/org/luxons/sevenwonders/validation/DestinationAccessValidatorTest.kt
new file mode 100644
index 00000000..45e58b7f
--- /dev/null
+++ b/backend/src/test/kotlin/org/luxons/sevenwonders/validation/DestinationAccessValidatorTest.kt
@@ -0,0 +1,138 @@
+package org.luxons.sevenwonders.validation
+
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Test
+import org.luxons.sevenwonders.lobby.Lobby
+import org.luxons.sevenwonders.lobby.Player
+import org.luxons.sevenwonders.repositories.LobbyNotFoundException
+import org.luxons.sevenwonders.repositories.LobbyRepository
+
+class DestinationAccessValidatorTest {
+
+    private lateinit var lobbyRepository: LobbyRepository
+
+    private lateinit var destinationAccessValidator: DestinationAccessValidator
+
+    @Before
+    fun setup() {
+        lobbyRepository = LobbyRepository()
+        destinationAccessValidator = DestinationAccessValidator(lobbyRepository)
+    }
+
+    private fun createLobby(gameName: String, ownerUsername: String, vararg otherPlayers: String): Lobby {
+        val owner = Player(ownerUsername, ownerUsername)
+        val lobby = lobbyRepository.create(gameName, owner)
+        for (playerName in otherPlayers) {
+            val player = Player(playerName, playerName)
+            lobby.addPlayer(player)
+        }
+        return lobby
+    }
+
+    private fun createGame(gameName: String, ownerUsername: String, vararg otherPlayers: String) {
+        val lobby = createLobby(gameName, ownerUsername, *otherPlayers)
+        lobby.startGame()
+    }
+
+    @Test
+    fun validate_failsOnNullUser() {
+        assertFalse(destinationAccessValidator.hasAccess(null, "doesNotMatter"))
+    }
+
+    @Test
+    fun validate_successWhenNoReference() {
+        assertTrue(destinationAccessValidator.hasAccess("", ""))
+        assertTrue(destinationAccessValidator.hasAccess("", "test"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "test"))
+    }
+
+    @Test
+    fun validate_successWhenNoRefFollows() {
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game/"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby/"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/game/"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/lobby/"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game//suffix"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby//suffix"))
+    }
+
+    @Test
+    fun validate_successWhenRefIsNotANumber() {
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game/notANumber"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby/notANumber"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/game/notANumber"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "prefix/lobby/notANumber"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/game/notANumber/suffix"))
+        assertTrue(destinationAccessValidator.hasAccess("testUser", "/lobby/notANumber/suffix"))
+    }
+
+    @Test(expected = LobbyNotFoundException::class)
+    fun validate_failWhenNoLobbyExist() {
+        destinationAccessValidator.hasAccess("", "/lobby/0")
+    }
+
+    @Test(expected = LobbyNotFoundException::class)
+    fun validate_failWhenNoGameExist() {
+        destinationAccessValidator.hasAccess("", "/game/0")
+    }
+
+    @Test(expected = LobbyNotFoundException::class)
+    fun validate_failWhenReferencedLobbyDoesNotExist() {
+        createLobby("Test Game", "ownerUser1")
+        createLobby("Test Game 2", "ownerUser2")
+        destinationAccessValidator.hasAccess("doesNotMatter", "/lobby/3")
+    }
+
+    @Test(expected = LobbyNotFoundException::class)
+    fun validate_failWhenReferencedGameDoesNotExist() {
+        createGame("Test Game 1", "user1", "user2", "user3")
+        createGame("Test Game 2", "user4", "user5", "user6")
+        destinationAccessValidator.hasAccess("doesNotMatter", "/game/3")
+    }
+
+    @Test
+    fun validate_failWhenUserIsNotPartOfReferencedLobby() {
+        createLobby("Test Game", "ownerUser")
+        destinationAccessValidator.hasAccess("userNotInLobby", "/lobby/0")
+    }
+
+    @Test
+    fun validate_failWhenUserIsNotPartOfReferencedGame() {
+        createGame("Test Game", "ownerUser", "otherUser1", "otherUser2")
+        destinationAccessValidator.hasAccess("userNotInGame", "/game/0")
+    }
+
+    @Test
+    fun validate_successWhenUserIsOwnerOfReferencedLobby() {
+        createLobby("Test Game 1", "user1")
+        assertTrue(destinationAccessValidator.hasAccess("user1", "/lobby/0"))
+        createLobby("Test Game 2", "user2")
+        assertTrue(destinationAccessValidator.hasAccess("user2", "/lobby/1"))
+    }
+
+    @Test
+    fun validate_successWhenUserIsMemberOfReferencedLobby() {
+        createLobby("Test Game 1", "user1", "user2")
+        assertTrue(destinationAccessValidator.hasAccess("user2", "/lobby/0"))
+        createLobby("Test Game 2", "user3", "user4")
+        assertTrue(destinationAccessValidator.hasAccess("user4", "/lobby/1"))
+    }
+
+    @Test
+    fun validate_successWhenUserIsOwnerOfReferencedGame() {
+        createGame("Test Game 1", "owner1", "user2", "user3")
+        assertTrue(destinationAccessValidator.hasAccess("owner1", "/game/0"))
+        createGame("Test Game 2", "owner4", "user5", "user6")
+        assertTrue(destinationAccessValidator.hasAccess("owner4", "/game/1"))
+    }
+
+    @Test
+    fun validate_successWhenUserIsMemberOfReferencedGame() {
+        createGame("Test Game 1", "owner1", "user2", "user3")
+        assertTrue(destinationAccessValidator.hasAccess("user2", "/game/0"))
+        createGame("Test Game 2", "owner4", "user5", "user6")
+        assertTrue(destinationAccessValidator.hasAccess("user6", "/game/1"))
+    }
+}