/**** 
* Classes
****/
var OverhangPlate = Container.expand(function (width, direction, color) {
	var self = Container.call(this);
	var plateGraphics = self.attachAsset('plate', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	plateGraphics.width = width;
	plateGraphics.tint = color;
	self.speedX = direction === 'right' ? 5 : -5;
	self.speedY = -20;
	self.rotationSpeed = direction === 'right' ? 0.01 : -0.01;
	self.move = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.speedY += 0.5;
		self.speedX *= 0.99;
		self.rotation += self.rotationSpeed;
	};
});
var Brick = Container.expand(function (targetWidth) {
	var self = Container.call(this);
	var brickGraphics = self.attachAsset('brick', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	brickGraphics.width = targetWidth;
	self.speed = 22.5;
	self.move = function () {
		self.x -= self.speed;
	};
	self.stack = function () {
		self.speed = 0;
	};
	self.slide = function () {
		self.x = 2048 + self.width / 2;
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/
var scoreTxt = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact'
});
scoreTxt.anchor.set(.5, 0);
LK.gui.topCenter.addChild(scoreTxt);
var plateContainer = new Container();
plateContainer.targetY = 0;
game.addChild(plateContainer);
var currentPlateWidth = 1000;
var plates = [];
var plateColorIndex = 0;
var firstBrick = new Brick(currentPlateWidth);
firstBrick.x = 2048 / 2;
firstBrick.y = 2732 - firstBrick.height / 2;
firstBrick.speed = 0;
plates.push(firstBrick);
plateContainer.addChild(firstBrick);
var newBrick = new Brick(currentPlateWidth);
newBrick.slide();
newBrick.y = 2732 - plates.length * newBrick.height - newBrick.height / 2;
plates.push(newBrick);
plateContainer.addChild(newBrick);
game.on('down', function (obj) {
	var topBrick = plates[plates.length - 2];
	if (newBrick.x < topBrick.x + topBrick.width && newBrick.x + newBrick.width > topBrick.x) {
		var overhang = newBrick.x + newBrick.width / 2 - (topBrick.x + topBrick.width / 2);
		var overhangSide = overhang > 0 ? 'right' : 'left';
		overhang = Math.abs(overhang);
		newBrick.stack();
		currentPlateWidth -= overhang;
		var overhangBrick = new OverhangPlate(overhang, overhangSide, newBrick.color);
		overhangBrick.x = overhangSide === 'right' ? newBrick.x + newBrick.width / 2 : newBrick.x - newBrick.width / 2;
		overhangBrick.y = newBrick.y;
		plateContainer.addChildAt(overhangBrick, 0);
		newBrick.width -= overhang;
		if (overhangSide === 'right') {
			newBrick.x -= overhang / 2;
			overhangBrick.x -= overhang / 2;
		} else {
			newBrick.x += overhang / 2;
			overhangBrick.x += overhang / 2;
		}
		newBrick = new Brick(currentPlateWidth);
		newBrick.slide();
		newBrick.y = 2732 - plates.length * newBrick.height - newBrick.height / 2;
		plates.push(newBrick);
		plateContainer.addChild(newBrick);
		if (plates.length > 17) {
			plateContainer.targetY += newBrick.height;
		}
		scoreTxt.setText(plates.length - 2);
	} else {
		LK.showGameOver();
	}
});
LK.on('tick', function () {
	for (var i = 0; i < plateContainer.children.length; i++) {
		var plate = plateContainer.children[i];
		plate.move();
		if (plate instanceof OverhangPlate && (plate.x < -plate.width / 2 || plate.x > 2048 + plate.width / 2 || plate.y > 2732 + plate.height / 2)) {
			plate.destroy();
		}
		if (plate instanceof Brick && plate.x < -plate.width / 2) {
			LK.showGameOver();
		}
	}
	if (plateContainer.y !== plateContainer.targetY) {
		plateContainer.y += (plateContainer.targetY - plateContainer.y) * 0.1;
	}
});

===================================================================
--- original.js
+++ change.js
@@ -112,9 +112,9 @@
 		plate.move();
 		if (plate instanceof OverhangPlate && (plate.x < -plate.width / 2 || plate.x > 2048 + plate.width / 2 || plate.y > 2732 + plate.height / 2)) {
 			plate.destroy();
 		}
-		if (plate instanceof Plate && plate.x < -plate.width / 2) {
+		if (plate instanceof Brick && plate.x < -plate.width / 2) {
 			LK.showGameOver();
 		}
 	}
 	if (plateContainer.y !== plateContainer.targetY) {