diff --git a/src/main/java/de/hsfulda/onses/models/Game.java b/src/main/java/de/hsfulda/onses/models/Game.java
index e5066bc..0f9a56c 100644
--- a/src/main/java/de/hsfulda/onses/models/Game.java
+++ b/src/main/java/de/hsfulda/onses/models/Game.java
@@ -1,8 +1,15 @@
 package de.hsfulda.onses.models;
 
+import de.hsfulda.onses.services.GameService;
+import de.hsfulda.onses.services.PlayerService;
+
 import java.util.ArrayList;
 
 public class Game {
+
+    private GameService gameService;
+    private PlayerService playerService;
+
     private final ArrayList<Card> drawCardDeck = new ArrayList<>();
 
     private Card lastPlayedCard = null;
@@ -24,4 +31,26 @@ public class Game {
         drawCardDeck.add(card);
     }
 
+    public GameService getGameService() {
+        return gameService;
+    }
+
+    public Game setGameService(GameService gameService) {
+        this.gameService = gameService;
+        return this;
+    }
+
+    public PlayerService getPlayerService() {
+        return playerService;
+    }
+
+    public Game setPlayerService(PlayerService playerService) {
+        this.playerService = playerService;
+        return this;
+    }
+
+    public Game()
+    {
+        this.playerService = new PlayerService().setGame(this);
+    }
 }
diff --git a/src/main/java/de/hsfulda/onses/models/Player.java b/src/main/java/de/hsfulda/onses/models/Player.java
index 77eb2b1..88ce707 100644
--- a/src/main/java/de/hsfulda/onses/models/Player.java
+++ b/src/main/java/de/hsfulda/onses/models/Player.java
@@ -1,9 +1,13 @@
 package de.hsfulda.onses.models;
 
+import de.hsfulda.onses.services.PlayerService;
+
 import java.util.ArrayList;
 
 public class Player {
 
+    private PlayerService playerService;
+    private Game game;
     private final ArrayList<Card> playerDeck = new ArrayList<>();
 
     public ArrayList<Card> getPlayerDeck() {
@@ -13,4 +17,24 @@ public class Player {
     public void addCardToPlayerDeck(Card card) {
         playerDeck.add(card);
     }
+
+
+
+    public PlayerService getPlayerService() {
+        return playerService;
+    }
+
+    public Player setPlayerService(PlayerService playerService) {
+        this.playerService = playerService;
+        return this;
+    }
+
+    public Game getGame() {
+        return game;
+    }
+
+    public Player setGame(Game game) {
+        this.game = game;
+        return this;
+    }
 }
diff --git a/src/main/java/de/hsfulda/onses/services/GameService.java b/src/main/java/de/hsfulda/onses/services/GameService.java
index df7cf87..c9acd67 100644
--- a/src/main/java/de/hsfulda/onses/services/GameService.java
+++ b/src/main/java/de/hsfulda/onses/services/GameService.java
@@ -10,6 +10,7 @@ public class GameService {
     private final Game game;
     public GameService(Game game) {
         this.game = game;
+        this.game.setGameService(this);
     }
     public GameService() {
         this(new Game());
diff --git a/src/main/java/de/hsfulda/onses/services/PlayerService.java b/src/main/java/de/hsfulda/onses/services/PlayerService.java
index d726af8..b3b4cc4 100644
--- a/src/main/java/de/hsfulda/onses/services/PlayerService.java
+++ b/src/main/java/de/hsfulda/onses/services/PlayerService.java
@@ -1,11 +1,13 @@
 package de.hsfulda.onses.services;
 
+import de.hsfulda.onses.models.Game;
 import de.hsfulda.onses.models.Player;
 
 import java.util.ArrayList;
 
 public class PlayerService {
 
+    private Game game;
     private boolean currentTurn = true; // true --> real player, false --> Bot
 
     private final ArrayList<Player> playerList = new ArrayList<>();
@@ -31,4 +33,20 @@ public class PlayerService {
         return this;
     }
 
+    public Game getGame() {
+        return game;
+    }
+
+    public PlayerService setGame(Game game) {
+        this.game = game;
+        playerList.getFirst().setGame(this.game);
+        playerList.getLast().setGame(this.game);
+        return this;
+    }
+
+    public PlayerService()
+    {
+        addPlayerToList(new Player().setPlayerService(this));
+        addPlayerToList(new Player().setPlayerService(this));
+    }
 }
diff --git a/src/test/java/de/hsfulda/onses/GameServiceTest.java b/src/test/java/de/hsfulda/onses/GameServiceTest.java
index 7be6f27..c76e1d4 100644
--- a/src/test/java/de/hsfulda/onses/GameServiceTest.java
+++ b/src/test/java/de/hsfulda/onses/GameServiceTest.java
@@ -157,4 +157,32 @@ public class GameServiceTest {
             }
         }
     }
+
+    @Test
+    @DisplayName("RelationshipGameService_Game")
+    public void RelationshipGameService_Game()
+    {
+        // arrange
+        GameService expected = new GameService();
+        //act
+        GameService answer = expected.getGame().getGameService();
+        // assert
+        assertEquals(expected, answer);
+    }
+    @Test
+    @DisplayName("allRelationsTest")
+    public void allRelationsTest ()
+    {
+        // arrange
+        GameService expected = new GameService();
+        //act
+        Player input1 = expected.getGame().getPlayerService().getPlayerList().getFirst();
+        Player input2 = expected.getGame().getPlayerService().getPlayerList().getLast();
+        GameService answer1 = input1.getPlayerService().getGame().getGameService();
+        GameService answer2 = input2.getGame().getGameService();
+        // assert
+        assertEquals(expected, answer1);
+        assertEquals(expected, answer2);
+    }
+
 }
diff --git a/src/test/java/de/hsfulda/onses/GameTest.java b/src/test/java/de/hsfulda/onses/GameTest.java
index 13bb0ff..10b0dc8 100644
--- a/src/test/java/de/hsfulda/onses/GameTest.java
+++ b/src/test/java/de/hsfulda/onses/GameTest.java
@@ -46,4 +46,14 @@ public class GameTest {
         assertEquals(game.getDrawCardDeck().getFirst(), answer1);
         assertEquals(game.getDrawCardDeck().get(1), answer2);
     }
+    @Test
+    @DisplayName("RelationshipGame_PlayerService")
+    public void RelationshipGame_PlayerService() {
+        // arrange
+        Game expected = new Game();
+        // act
+        Game answer = expected.getPlayerService().getGame();
+        // assert
+        assertEquals(expected, answer);
+    }
 }
diff --git a/src/test/java/de/hsfulda/onses/PlayerServiceTest.java b/src/test/java/de/hsfulda/onses/PlayerServiceTest.java
index 08630c6..5dc2fd2 100644
--- a/src/test/java/de/hsfulda/onses/PlayerServiceTest.java
+++ b/src/test/java/de/hsfulda/onses/PlayerServiceTest.java
@@ -15,11 +15,15 @@ public class PlayerServiceTest {
     void addPlayerToPlayerList() {
         //arrange
         Player input = new Player();
-        Player expected = input;
+        boolean expected = true;
+        boolean answer = false;
         // act
         PlayerService playerservice = new PlayerService();
         playerservice.addPlayerToList(input);
-        Player answer = playerservice.getPlayerList().getFirst();
+        for (Player i : playerservice.getPlayerList())
+        {
+            if (i == input) {answer = true; break;}
+        }
         // assert
         assertEquals(expected, answer);
     }
@@ -28,20 +32,24 @@ public class PlayerServiceTest {
     @DisplayName("addMultiplePlayerToPlayerList")
     void addMultiplePlayerToPlayerList() {
         //arrange
+        boolean expected = true;
         Player input1 = new Player();
-        Player expected1 = input1;
+        boolean answer1 = false;
         Player input2 = new Player();
-        Player expected2 = input2;
+        boolean answer2 = false;
         // act
         PlayerService playerservice = new PlayerService();
         playerservice.addPlayerToList(input1);
         playerservice.addPlayerToList(input2);
 
-        Player answer1 = playerservice.getPlayerList().getFirst();
-        Player answer2 = playerservice.getPlayerList().get(1);
+        for (Player i : playerservice.getPlayerList())
+        {
+            if (i == input1) {answer1 = true;}
+            if (i == input2) {answer2 = true;}
+        }
         // assert
-        assertEquals(expected1, answer1);
-        assertEquals(expected2, answer2);
+        assertEquals(expected, answer1);
+        assertEquals(expected, answer2);
     }
     @Test
     @DisplayName("checkCurrentTurnAfterNextTurn")
@@ -70,4 +78,16 @@ public class PlayerServiceTest {
         // assert
         assertEquals(expected, answer);
     }
+    @Test
+    @DisplayName("RelationShip_Player_PlayerService")
+    void Relationship_Player_PlayerService() {
+        // arrange
+        PlayerService expected = new PlayerService();
+        // act
+        PlayerService answer1 = expected.getPlayerList().getFirst().getPlayerService();
+        PlayerService answer2 = expected.getPlayerList().getLast().getPlayerService();
+        // assert
+        assertEquals(expected, answer1);
+        assertEquals(expected, answer2);
+    }
 }
diff --git a/src/test/java/de/hsfulda/onses/PlayerTest.java b/src/test/java/de/hsfulda/onses/PlayerTest.java
index 80c68d5..fcdeeac 100644
--- a/src/test/java/de/hsfulda/onses/PlayerTest.java
+++ b/src/test/java/de/hsfulda/onses/PlayerTest.java
@@ -1,6 +1,8 @@
 
 package de.hsfulda.onses;
 
+import de.hsfulda.onses.models.Game;
+import de.hsfulda.onses.services.PlayerService;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import static org.junit.jupiter.api.Assertions.*;
@@ -43,4 +45,17 @@ public class PlayerTest {
         assertEquals(testCard1, firstCardPlayerDeck);
         assertEquals(testCard2, secondCardPlayerDeck);
     }
+    @Test
+    @DisplayName("Relationship_Player_Game")
+    void Relationship_Player_Game() {
+        // arrange
+        PlayerService input = new PlayerService();
+        Game expected = input.getGame();
+        // act
+        Game answer1 = input.getPlayerList().getFirst().getPlayerService().getGame();
+        Game answer2 = input.getPlayerList().getLast().getPlayerService().getGame();
+        // assert
+        assertEquals(expected, answer1);
+        assertEquals(expected, answer2);
+    }
 }