===================================================================
--- original.js
+++ change.js
@@ -103,10 +103,10 @@
 /********************************** MOVING TARGET CLASS ************************************/
 /***********************************************************************************/ 
 var MovingTarget = Container.expand(function () {
 	var self = Container.call(this);
-	var birdAssets = ['bird1', 'bird2', 'bird3'];
-	currentTargetAsset = birdAssets[Math.floor(Math.random() * birdAssets.length)];
+	var targets = levelManager.getTargets();
+	currentTargetAsset = targets[Math.floor(Math.random() * targets.length)];
 	var targetGraphics = self.attachAsset(currentTargetAsset, {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
@@ -247,12 +247,45 @@
 
 /**** 
 * Game Code
 ****/ 
+/***********************************************************************************/ 
+/********************************** LEVEL MANAGER CLASS ****************************/
+/***********************************************************************************/ 
 /****************************************************************************************** */ 
 /************************************** GLOBAL VARIABLES ********************************** */
 /****************************************************************************************** */ 
 // Enumeration for game states
+var LevelManager = function LevelManager() {
+	this.levels = [{
+		background: 'background1',
+		targets: ['bird1', 'bird2']
+	}, {
+		background: 'background2',
+		targets: ['bird3', 'bird1']
+	}, {
+		background: 'background3',
+		targets: ['bird2', 'bird3']
+	}];
+	this.currentLevel = 0;
+	this.currentRound = 0;
+};
+LevelManager.prototype.getBackground = function () {
+	return this.levels[this.currentLevel].background;
+};
+LevelManager.prototype.getTargets = function () {
+	return this.levels[this.currentLevel].targets;
+};
+LevelManager.prototype.nextRound = function () {
+	this.currentRound++;
+	if (this.currentRound >= this.levels[this.currentLevel].targets.length) {
+		this.currentRound = 0;
+		this.currentLevel++;
+		if (this.currentLevel >= this.levels.length) {
+			this.currentLevel = 0; // Loop back to the first level
+		}
+	}
+};
 var GAME_STATE = {
 	INIT: 'INIT',
 	NEW_ROUND: 'NEW_ROUND',
 	PLAYING: 'PLAYING',
@@ -349,8 +382,9 @@
 /************************************* GAME STATES **************************************** */
 /****************************************************************************************** */ 
 function gameInitialize() {
 	log("Game initialize...");
+	var levelManager = new LevelManager();
 	background = LK.getAsset('background', {
 		anchorX: 0,
 		anchorY: 0,
 		x: 0,
@@ -418,8 +452,14 @@
 }
 /**************************************** NEW ROUND STATE  *********************************/
 function initNewRoundState() {
 	log("initNewRoundState...");
+	background = LK.getAsset(levelManager.getBackground(), {
+		anchorX: 0,
+		anchorY: 0,
+		x: 0,
+		y: 0
+	});
 	background.visible = true;
 	gameState = GAME_STATE.NEW_ROUND;
 	// TODO : handle Level change and target change
 	currentTarget = new MovingTarget();
@@ -503,8 +543,9 @@
 }
 function cleanResultState() {
 	log("cleanResultState...");
 	frameMask.visible = false;
+	levelManager.nextRound();
 	scoreTxt.visible = false;
 	photoFrameBackground.visible = false;
 	photoFrame.visible = false;
 	photoFrameShadow.visible = false;