var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.createAsset('player', 'Player Graphics', .5, .5);
	playerGraphics.scale.set(2);
	playerGraphics.scale.x *= -1;
	self.speed = 10;
	self.move = function (direction) {
		if (direction === 'left') {
			self.x -= self.speed;
		} else if (direction === 'right') {
			self.x += self.speed;
		}
	};
});
var CPU = Container.expand(function () {
	var self = Container.call(this);
	var cpuGraphics = self.createAsset('cpu', 'CPU Graphics', .5, .5);
	cpuGraphics.scale.set(2);
	cpuGraphics.scale.x *= -1;
	self.speed = 4;
	self.move = function () {
		self.x += self.speed;
	};
});
var FinishLine = Container.expand(function () {
	var self = Container.call(this);
	var finishLineGraphics = self.createAsset('finishLine', 'Finish Line Graphics', .5, 1);
	finishLineGraphics.scale.set(2);
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	LK.stageContainer.setBackgroundColor(0x000000);
	var player = self.addChild(new Player());
	player.x = 200;
	player.y = 2732 / 2;
	var cpu = self.addChild(new CPU());
	cpu.x = 200;
	cpu.y = 2732 / 2 - 100;
	var finishLine = self.addChild(new FinishLine());
	finishLine.x = 2048 - 200;
	finishLine.y = 2732 / 2;
	var leftArrow = self.createAsset('leftArrow', 'Left Arrow', .5, .5);
	leftArrow.scale.set(2);
	leftArrow.x = 100;
	leftArrow.y = 2732 - 100;
	leftArrow.on('move', function () {
		player.move('left');
	});
	var rightArrow = self.createAsset('rightArrow', 'Right Arrow', .5, .5);
	rightArrow.scale.set(2);
	rightArrow.x = 2048 - 100;
	rightArrow.y = 2732 - 100;
	rightArrow.on('move', function () {
		player.move('right');
	});
	var isGameOver = false;
	LK.on('tick', function () {
		cpu.move();
		if (player.intersects(finishLine)) {
			isGameOver = true;
			console.log("Player Wins!");
		}
		if (cpu.intersects(finishLine)) {
			isGameOver = true;
			console.log("CPU Wins!");
		}
		if (isGameOver) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -42,16 +42,16 @@
 	var leftArrow = self.createAsset('leftArrow', 'Left Arrow', .5, .5);
 	leftArrow.scale.set(2);
 	leftArrow.x = 100;
 	leftArrow.y = 2732 - 100;
-	leftArrow.on('down', function () {
+	leftArrow.on('move', function () {
 		player.move('left');
 	});
 	var rightArrow = self.createAsset('rightArrow', 'Right Arrow', .5, .5);
 	rightArrow.scale.set(2);
 	rightArrow.x = 2048 - 100;
 	rightArrow.y = 2732 - 100;
-	rightArrow.on('down', function () {
+	rightArrow.on('move', function () {
 		player.move('right');
 	});
 	var isGameOver = false;
 	LK.on('tick', function () {