var Hurdle = Container.expand(function () {
	var self = Container.call(this);
	var hurdleGraphics = self.createAsset('hurdle', 'Hurdle Graphics', .5, .5);
	hurdleGraphics.hitArea = new Rectangle(-hurdleGraphics.width * 0.2 / 2, -hurdleGraphics.height * 0.2 / 2, hurdleGraphics.width * 0.8, hurdleGraphics.height * 0.8);
	self.speed = -5;
	self.move = function () {
		self.x += self.speed;
	};
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.createAsset('player', 'Player Graphics', .5, .5);
	playerGraphics.hitArea = new Rectangle(-playerGraphics.width * 0.105 / 2, -playerGraphics.height * 0.105 / 2, playerGraphics.width * 0.21, playerGraphics.height * 0.21);
	playerGraphics.tint = 0xFF0000;
	self.jump = function () {
		if (self.y === 2000) {
			var jumpHeight = 330;
			var jumpSpeed = 10;
			var jumpTick = 0;
			var rotationSpeed = 0.1;
			var score = 0;
			var scoreTxt = new Text2(score.toString(), {
				size: 150,
				fill: '#ffffff'
			});
			scoreTxt.anchor.set(.5, 0);
			LK.gui.topCenter.addChild(scoreTxt);
			var jumpingInterval = LK.setInterval(function () {
				if (jumpTick < jumpHeight) {
					self.y -= jumpSpeed;
					jumpTick += jumpSpeed;
					self.rotation += rotationSpeed;
				} else if (self.y < 2000) {
					self.y += jumpSpeed;
					self.rotation += rotationSpeed;
				}
				if (self.y >= 2000) {
					self.y = 2000;
					self.rotation = 0;
					LK.clearInterval(jumpingInterval);
					this.score++;
					scoreTxt.setText(this.score.toString());
				}
			}, 21);
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	LK.stageContainer.setBackgroundColor(0xADD8E6);
	var player = self.addChild(new Player());
	player.x = 200;
	player.y = 2000;
	var score = 0;
	var groundGraphics = self.createAsset('ground', 'Ground Graphics', 0, 1);
	groundGraphics.width = 2048;
	groundGraphics.height = (2732 - player.y) * 0.8;
	groundGraphics.y = player.y + groundGraphics.height / 2 + groundGraphics.height * 0.4 + 100;
	groundGraphics.tint = 0x008000;
	var hurdles = [];
	var scoreTxt = new Text2(score.toString(), {
		size: 150,
		fill: '#ffffff'
	});
	scoreTxt.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(scoreTxt);
	LK.on('tick', function () {
		for (var a = hurdles.length - 1; a >= 0; a--) {
			if (hurdles[a]) {
				hurdles[a].move();
				if (hurdles[a].x < -50) {
					hurdles[a].destroy();
					hurdles.splice(a, 1);
				}
				if (player.intersects(hurdles[a])) {
					LK.showGameOver();
				}
			}
		}
		if (LK.ticks % 96 == 0) {
			var newHurdle = new Hurdle();
			newHurdle.x = 2048;
			newHurdle.y = 2000;
			hurdles.push(newHurdle);
			self.addChild(newHurdle);
		}
	});
	stage.on('down', function (obj) {
		player.jump();
	});
});

===================================================================
--- original.js
+++ change.js
@@ -9,9 +9,9 @@
 });
 var Player = Container.expand(function () {
 	var self = Container.call(this);
 	var playerGraphics = self.createAsset('player', 'Player Graphics', .5, .5);
-	playerGraphics.hitArea = new Rectangle(-playerGraphics.width * 0.35 / 2, -playerGraphics.height * 0.35 / 2, playerGraphics.width * 0.7, playerGraphics.height * 0.7);
+	playerGraphics.hitArea = new Rectangle(-playerGraphics.width * 0.105 / 2, -playerGraphics.height * 0.105 / 2, playerGraphics.width * 0.21, playerGraphics.height * 0.21);
 	playerGraphics.tint = 0xFF0000;
 	self.jump = function () {
 		if (self.y === 2000) {
 			var jumpHeight = 330;