diff --git a/src/common/CommonMancalaGame.ts b/src/common/CommonMancalaGame.ts
index 29c7c4d..ea612fb 100644
--- a/src/common/CommonMancalaGame.ts
+++ b/src/common/CommonMancalaGame.ts
@@ -5,8 +5,8 @@ import { GRLastStoneInBank } from './game_rules/GRLastStoneInBank';
 import { GRLastStoneInEmptyPit } from './game_rules/GRLastStoneInEmptyPit';
 
 export class CommonMancalaGame extends MancalaGame {
-  constructor(player1Id: string, player2Id: string) {
-    super(new CommonBoard(), player1Id, player2Id, player1Id, [
+  constructor(id: string, player1Id: string, player2Id: string) {
+    super(id, new CommonBoard(), player1Id, player2Id, player1Id, [
       new GRLastStoneInEmptyPit(),
       new GRLastStoneInBank(),
       new GRClearBoardAtEnd()
diff --git a/src/core/MancalaGame.ts b/src/core/MancalaGame.ts
index e83ab6b..b73647b 100644
--- a/src/core/MancalaGame.ts
+++ b/src/core/MancalaGame.ts
@@ -4,6 +4,7 @@ import { GameRule } from './GameRule';
 export type GameState = 'initial' | 'playing' | 'ended';
 
 export class MancalaGame {
+  id: string;
   board: Board;
   player1Id: string;
   player2Id: string;
@@ -12,6 +13,7 @@ export class MancalaGame {
   gameRules: GameRule[];
 
   constructor(
+    id: string,
     board: Board,
     player1Id: string,
     player2Id: string,
@@ -19,6 +21,7 @@ export class MancalaGame {
     gameRules: GameRule[],
     state: GameState = 'initial'
   ) {
+    this.id = id;
     this.board = board;
     this.player1Id = player1Id;
     this.player2Id = player2Id;
@@ -193,6 +196,7 @@ export class MancalaGame {
 
   public static createFromMancalaGame(mancalaGame: MancalaGame): MancalaGame {
     return new MancalaGame(
+      mancalaGame.id,
       new Board(
         mancalaGame.board.playerPitCount,
         mancalaGame.board.initialStoneCountInPits,
diff --git a/tests/MancalaGame.test.ts b/tests/MancalaGame.test.ts
index 11088e4..22c6894 100644
--- a/tests/MancalaGame.test.ts
+++ b/tests/MancalaGame.test.ts
@@ -8,7 +8,7 @@ function createGame(): MancalaGame {
   const board = new Board(6, 4);
   const player1Id = '0';
   const player2Id = '1';
-  const game = new MancalaGame(board, player1Id, player2Id, player1Id, [
+  const game = new MancalaGame('0', board, player1Id, player2Id, player1Id, [
     new GRLastStoneInEmptyPit(),
     new GRLastStoneInBank(),
     new GRClearBoardAtEnd()
diff --git a/tests/game_rules/GRClearBoardAtEnd.test.ts b/tests/game_rules/GRClearBoardAtEnd.test.ts
index 65aa1c9..30f8109 100644
--- a/tests/game_rules/GRClearBoardAtEnd.test.ts
+++ b/tests/game_rules/GRClearBoardAtEnd.test.ts
@@ -8,7 +8,7 @@ function createGame(): MancalaGame {
   const board = new Board(6, 4);
   const player1Id = '0';
   const player2Id = '1';
-  const game = new MancalaGame(board, player1Id, player2Id, player1Id, [
+  const game = new MancalaGame('0', board, player1Id, player2Id, player1Id, [
     new GRLastStoneInEmptyPit(),
     new GRLastStoneInBank(),
     new GRClearBoardAtEnd()