===================================================================
--- original.js
+++ change.js
@@ -1,20 +1,7 @@
-var Line = Container.expand(function (startX, startY, endX, endY) {
-	var self = Container.call(this);
-	var lineGraphics = self.createAsset('line', 'Line Graphics', 0, 0);
-	lineGraphics.width = Math.sqrt(Math.pow(endX - startX, 2) + Math.pow(endY - startY, 2));
-	lineGraphics.rotation = Math.atan2(endY - startY, endX - startX);
-	lineGraphics.x = startX;
-	lineGraphics.y = startY;
-	self.addChild(lineGraphics);
-	return self;
-});
-var Picture = Container.expand(function (index) {
-	var self = Container.call(this);
-	self.index = index;
-	var pictureGraphics = self.createAsset('picture' + self.index, 'Picture Graphics', .5, .5);
-	return self;
-});
+/**** 
+* Classes
+****/ 
 var Card = Container.expand(function (context, uid, index) {
 	var self = Container.call(this);
 	self.row = 0;
 	self.col = 0;
@@ -26,9 +13,11 @@
 	}
 	self.isMatched = false;
 	nbCardsLeft++;
 	self.shakeAnimation = function (card) {
-		if (!card) return;
+		if (!card) {
+			return;
+		}
 		var shakeCount = 0;
 		var shakeTimes = 9;
 		var shakeStrength = 70;
 		var originalX = card.x;
@@ -42,17 +31,21 @@
 				card.x = originalX;
 				card.y = originalY;
 				card.scale.x = 1;
 				card.scale.y = 1;
-				if (card === selectedCard1) selectedCard1 = null;
-				if (card === selectedCard2) selectedCard2 = null;
+				if (card === selectedCard1) {
+					selectedCard1 = null;
+				}
+				if (card === selectedCard2) {
+					selectedCard2 = null;
+				}
 				isAnimating = false;
 			}
 		}
 		shake();
 	};
 	self.id = index;
-	self.on('down', function (obj) {
+	self.on('down', function (x, y, obj) {
 		if (!self.isMatched && !isAnimating) {
 			if (!selectedCard1 || selectedCard1 && selectedCard2) {
 				if (selectedCard1) {
 					selectedCard1.scale.x = 1;
@@ -91,15 +84,18 @@
 				}
 			}
 		}
 	});
-	var cardGraphics = self.createAsset('card', 'Card Graphics', .5, .5);
+	var cardGraphics = self.attachAsset('card', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
 	self.match = function (otherCard) {
 		if (checkGameEndTimeout) {
 			LK.clearTimeout(checkGameEndTimeout);
 		}
 		var line = new Line(self.x, self.y, otherCard.x, otherCard.y);
-		LK.stage.addChild(line);
+		game.addChild(line);
 		var tadaAnimationSteps = 10;
 		var tadaAnimationCount = 0;
 		var scaleDelta = 0.2;
 		var tadaDelay = 0;
@@ -147,16 +143,38 @@
 	picture.x = 0;
 	picture.y = 0;
 	return self;
 });
+var Line = Container.expand(function (startX, startY, endX, endY) {
+	var self = Container.call(this);
+	var lineGraphics = self.attachAsset('line', {});
+	lineGraphics.width = Math.sqrt(Math.pow(endX - startX, 2) + Math.pow(endY - startY, 2));
+	lineGraphics.rotation = Math.atan2(endY - startY, endX - startX);
+	lineGraphics.x = startX;
+	lineGraphics.y = startY;
+	self.addChild(lineGraphics);
+	return self;
+});
+var Picture = Container.expand(function (index) {
+	var self = Container.call(this);
+	self.index = index;
+	var pictureGraphics = self.createAsset('picture' + self.index, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
 var TimerLine = Container.expand(function (width, height) {
 	var self = Container.call(this);
-	var timerGraphics = self.createAsset('timerLine', 'Timer Line Graphics', 0.5, 0.5);
+	var timerGraphics = self.attachAsset('timerLine', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
 	timerGraphics.width = width;
 	timerGraphics.height = height;
 	timerGraphics.tint = 0x00FF00;
 	self.addChild(timerGraphics);
-	self.update = function (elapsedTime) {
+	self._update_migrated = function (elapsedTime) {
 		var totalTicks = levelDurationInSeconds * 1000;
 		var deltaWidth = this.initialWidth / totalTicks;
 		timerGraphics.width = Math.max(0, timerGraphics.width - deltaWidth * elapsedTime);
 		if (timerGraphics.width / this.initialWidth < 0.25) {
@@ -164,8 +182,83 @@
 		}
 	};
 	return self;
 });
+
+/**** 
+* Initialize Game
+****/ 
+var game = new LK.Game({
+	backgroundColor: 0x000000
+});
+
+/**** 
+* Game Code
+****/ 
+function _slicedToArray(r, e) {
+	return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
+}
+function _nonIterableRest() {
+	throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+}
+function _unsupportedIterableToArray(r, a) {
+	if (r) {
+		if ("string" == typeof r) {
+			return _arrayLikeToArray(r, a);
+		}
+		var t = {}.toString.call(r).slice(8, -1);
+		return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
+	}
+}
+function _arrayLikeToArray(r, a) {
+	(null == a || a > r.length) && (a = r.length);
+	for (var e = 0, n = Array(a); e < a; e++) {
+		n[e] = r[e];
+	}
+	return n;
+}
+function _iterableToArrayLimit(r, l) {
+	var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
+	if (null != t) {
+		var e,
+			n,
+			i,
+			u,
+			a = [],
+			f = !0,
+			o = !1;
+		try {
+			if (i = (t = t.call(r)).next, 0 === l) {
+				if (Object(t) !== t) {
+					return;
+				}
+				f = !1;
+			} else {
+				for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0) {
+					;
+				}
+			}
+		} catch (r) {
+			o = !0, n = r;
+		} finally {
+			try {
+				if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) {
+					return;
+				}
+			} finally {
+				if (o) {
+					throw n;
+				}
+			}
+		}
+		return a;
+	}
+}
+function _arrayWithHoles(r) {
+	if (Array.isArray(r)) {
+		return r;
+	}
+}
 var level = 0;
 var levels = [{
 	'rows': 2,
 	'cols': 2,
@@ -233,9 +326,11 @@
 function prepareConfig(level) {
 	cardPairs = [];
 	cards.forEach(function (row) {
 		row.forEach(function (card) {
-			if (card) card.destroy();
+			if (card) {
+				card.destroy();
+			}
 		});
 	});
 	cards = [];
 	nbRows = levels[level].rows + 2;
@@ -325,9 +420,11 @@
 		return false;
 	}
 	var visited = Array.from({
 		length: nbRows
-	}, () => Array(nbCols).fill(false));
+	}, function () {
+		return Array(nbCols).fill(false);
+	});
 	function dfs(card, bends, direction) {
 		if (!card || visited[card.row][card.col] || bends > 2) {
 			return false;
 		}
@@ -335,17 +432,25 @@
 			return true;
 		}
 		visited[card.row][card.col] = true;
 		var directions = [[-1, 0], [1, 0], [0, -1], [0, 1]];
-		for (let [di, dj] of directions) {
-			var ni = card.row + di, nj = card.col + dj;
+		for (var _i = 0, _directions = directions; _i < _directions.length; _i++) {
+			var _directions$_i = _slicedToArray(_directions[_i], 2),
+				di = _directions$_i[0],
+				dj = _directions$_i[1];
+			var ni = card.row + di,
+				nj = card.col + dj;
 			if (ni >= 0 && ni < nbRows && nj >= 0 && nj < nbCols) {
 				var nextCard = cards[ni][nj];
 				if (!nextCard || !nextCard.id || nextCard.isMatched || nextCard === card2) {
 					if (di !== 0) {
-						if (dfs(nextCard, bends + (direction === -1), 1)) return true;
+						if (dfs(nextCard, bends + (direction === -1), 1)) {
+							return true;
+						}
 					} else if (dj !== 0) {
-						if (dfs(nextCard, bends + (direction === 1), -1)) return true;
+						if (dfs(nextCard, bends + (direction === 1), -1)) {
+							return true;
+						}
 					}
 				}
 			}
 		}
@@ -393,9 +498,9 @@
 		}
 	}
 	unmatchedCards.forEach(function (card, index) {
 		var newPos = reorderedPosition[index];
-		var moveCard = function () {
+		var _moveCard = function moveCard() {
 			var dx = 0;
 			var dy = 0;
 			if (newPos) {
 				dx = newPos.x - card.x;
@@ -413,15 +518,15 @@
 				}
 				card.col = newCol;
 				card.row = newRow;
 				cards[newRow][newCol] = card;
-				LK.off('tick', moveCard);
+				LK.off('tick', _moveCard);
 			} else {
 				card.x += dx * 0.05;
 				card.y += dy * 0.05;
 			}
 		};
-		LK.on('tick', moveCard);
+		LK.on('tick', _moveCard);
 	});
 	LK.setTimeout(function () {
 		isRemixing = false;
 		if (callback) {
@@ -565,9 +670,12 @@
 }
 function showConfettiAnimation(self, callback, isFinal) {
 	var confettiCount = 50 + 5 * level + (isFinal ? 50 : 0);
 	var confettiGraphics;
-	var backgroundImage = self.createAsset('background' + (level + (isFinal ? 1 : 0)), 'Level Background', 0.5, 0.5);
+	var backgroundImage = self.createAsset('background' + (level + (isFinal ? 1 : 0)), {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
 	backgroundImage.x = 2048 / 2;
 	backgroundImage.y = 2732 / 2;
 	self.addChild(backgroundImage);
 	var congratulationsText = new Text2('Congratulations!', {
@@ -577,12 +685,12 @@
 	if (isFinal) {
 		congratulationsText.anchor.set(0.5, 0);
 		congratulationsText.x = 0;
 		congratulationsText.y = 20;
-		LK.gui.topCenter.addChild(congratulationsText);
+		LK.gui.top.addChild(congratulationsText);
 	}
 	for (var i = 0; i < confettiCount; i++) {
-		confettiGraphics = self.createAsset('picture' + (1 + i % (nbPairs - 1)), 'Confetti Graphics', Math.random(), Math.random());
+		confettiGraphics = self.createAsset('picture' + (1 + i % (nbPairs - 1)), {});
 		confettiGraphics.x = Math.random() * 2048;
 		confettiGraphics.y = -30 - Math.random() * 2000;
 		confettiGraphics.rotation = Math.random() * Math.PI * 2;
 		self.addChild(confettiGraphics);
@@ -633,9 +741,12 @@
 	LK.gui.addChild(loadingText);
 	var assetsToLoad = ['line', 'picture1', 'picture2', 'picture3', 'picture8', 'picture7', 'picture24', 'picture17', 'picture16', 'picture4', 'picture29', 'picture6', 'picture14', 'picture15', 'picture20', 'picture9', 'picture10', 'picture27', 'picture12', 'picture19', 'picture26', 'picture22', 'picture18', 'picture28', 'picture23', 'picture13', 'picture21', 'picture5', 'picture11', 'picture25', 'picture30', 'picture32', 'picture31', 'picture37', 'picture39', 'picture44', 'picture38', 'picture48', 'picture47', 'picture50', 'picture42', 'picture46', 'picture45', 'picture43', 'picture49', 'picture34', 'picture33', 'picture40', 'picture36', 'picture35', 'picture41', 'picture55', 'picture52', 'picture54', 'picture53', 'picture51', 'picture56', 'picture59', 'picture60', 'picture57', 'picture58', 'picture64', 'picture63', 'picture61', 'picture62', 'picture65', 'card', 'timerLine', 'background1', 'background2', 'background3', 'background4', 'background5', 'background6', 'background7'];
 	var loadedAssets = 0;
 	assetsToLoad.forEach(function (asset) {
-		var assetInstance = LK.getAsset(asset, 'Loading ' + asset, 0.5, 0.5);
+		var assetInstance = LK.getAsset(asset, {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
 		loadedAssets++;
 		if (loadedAssets === assetsToLoad.length) {
 			LK.setTimeout(function () {
 				loadingText.destroy();
@@ -644,32 +755,29 @@
 			}, 1200);
 		}
 	});
 }
-var Game = Container.expand(function () {
-	var self = Container.call(this);
-	preload(self);
-	if (debug) {
-		this.timerLine = new TimerLine(1400, 20);
-		this.timerLine.initialWidth = 1400;
-		this.timerLine.x = 710;
-		this.timerLine.y = this.timerLine.y;
-		LK.gui.topLeft.addChild(this.timerLine);
-		var tickTime = Date.now();
-		LK.on('tick', function () {
-			if (isPlaying && !isRemixing) {
-				var elapsedTime = Date.now() - tickTime;
-				self.timerLine.update(elapsedTime);
-				tickTime = Date.now();
-			}
-		});
-		var matchDebugText = new Text2('Match:', {
-			size: 50,
-			fill: '#ffffff'
-		});
-		matchDebugText.anchor.set(0, 0);
-		LK.gui.topLeft.addChild(matchDebugText);
-		LK.on('tick', function () {
-			matchDebugText.setText('Level: ' + (level + 1) + ' Solved: ' + currentNbSolved + '/' + lastNbPossible + ' / isPlaying=' + isPlaying + ' / time=' + levelDurationInSeconds);
-		});
-	}
-});
+preload(game);
+if (debug) {
+	game.timerLine = new TimerLine(1400, 20);
+	game.timerLine.initialWidth = 1400;
+	game.timerLine.x = 710;
+	game.timerLine.y = game.timerLine.y;
+	LK.gui.topLeft.addChild(game.timerLine);
+	var tickTime = Date.now();
+	LK.on('tick', function () {
+		if (isPlaying && !isRemixing) {
+			var elapsedTime = Date.now() - tickTime;
+			game.timerLine._update_migrated(elapsedTime);
+			tickTime = Date.now();
+		}
+	});
+	var matchDebugText = new Text2('Match:', {
+		size: 50,
+		fill: '#ffffff'
+	});
+	matchDebugText.anchor.set(0, 0);
+	LK.gui.topLeft.addChild(matchDebugText);
+	LK.on('tick', function () {
+		matchDebugText.setText('Level: ' + (level + 1) + ' Solved: ' + currentNbSolved + '/' + lastNbPossible + ' / isPlaying=' + isPlaying + ' / time=' + levelDurationInSeconds);
+	});
+}
\ No newline at end of file