var GreyBox = Container.expand(function () {
	var self = Container.call(this);
	var boxGraphics = self.createAsset('greyBox', 'Grey Box', .5, .5);
});
var Upgrade = Container.expand(function () {
	var self = Container.call(this);
	var upgradeGraphics = self.createAsset('upgrade', 'Upgrade', .5, .5);
	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 character', .5, .5);
	self.speed = 5;
	self.move = function () {
		if (self.moveUp) {
			self.y -= self.speed;
		}
		if (self.moveDown) {
			self.y += self.speed;
		}
	};
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.createAsset('obstacle', 'Obstacle', .5, .5);
	self.speed = -5;
	self.move = function () {
		self.x += self.speed;
	};
});
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.createAsset('coin', 'Coin', .5, .5);
	self.speed = -5;
	self.move = function () {
		self.x += self.speed;
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var background = self.createAsset('background', 'Background', 0, 0);
	background.width = 2048;
	background.height = 2732;
	var player = self.addChild(new Player());
	player.x = 200;
	player.y = 2732 / 2;
	var upButton = self.createAsset('upButton', 'Button for moving up', .5, .5);
	upButton.x = 700;
	upButton.y = 2732 - 400;
	upButton.on('down', function () {
		player.moveUp = true;
	});
	upButton.on('up', function () {
		player.moveUp = false;
	});
	var downButton = self.createAsset('downButton', 'Button for moving down', .5, .5);
	downButton.x = 2048 - 700;
	downButton.y = 2732 - 400;
	downButton.on('down', function () {
		player.moveDown = true;
	});
	downButton.on('up', function () {
		player.moveDown = false;
	});
	var obstacles = [];
	var coins = [];
	var upgrades = [];
	var coinCounter = 0;
	var scoreTxt = new Text2('Coins: ' + coinCounter, {
		size: 150,
		fill: "#ffffff"
	});
	scoreTxt.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(scoreTxt);
	var isGameOver = false;
	var tickOffset = 0;
	LK.on('tick', function () {
		player.move();
		if (isGameOver) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
		for (var a = obstacles.length - 1; a >= 0; a--) {
			if (obstacles[a]) {
				obstacles[a].move();
				if (obstacles[a].x < -50) {
					obstacles[a].destroy();
					obstacles.splice(a, 1);
				} else if (player.intersects(obstacles[a])) {
					isGameOver = true;
				}
			}
		}
		for (var b = coins.length - 1; b >= 0; b--) {
			if (coins[b]) {
				coins[b].move();
				if (coins[b].x < -50) {
					coins[b].destroy();
					coins.splice(b, 1);
				} else if (player.intersects(coins[b])) {
					coins[b].destroy();
					coins.splice(b, 1);
					coinCounter++;
					scoreTxt.setText('' + coinCounter);
				}
			}
		}
		for (var c = upgrades.length - 1; c >= 0; c--) {
			if (upgrades[c]) {
				upgrades[c].move();
				if (upgrades[c].x < -50) {
					upgrades[c].destroy();
					upgrades.splice(c, 1);
				} else if (player.intersects(upgrades[c])) {
					upgrades[c].destroy();
					upgrades.splice(c, 1);
					player.speed += 2;
				}
			}
		}
		if (tickOffset++ % 60 == 0) {
			var newObstacle = new Obstacle();
			newObstacle.x = 2048;
			newObstacle.y = Math.random() * (2732 * 0.75);
			obstacles.push(newObstacle);
			self.addChild(newObstacle);
			var newCoin = new Coin();
			newCoin.x = 2048;
			newCoin.y = Math.random() * (2732 * 0.75);
			coins.push(newCoin);
			self.addChild(newCoin);
		}
		if (tickOffset % 240 == 0) {
			var newUpgrade = new Upgrade();
			newUpgrade.x = 2048;
			newUpgrade.y = Math.random() * (2732 * 0.75);
			upgrades.push(newUpgrade);
			self.addChild(newUpgrade);
		}
		console.log(LK.ticks);
	});
});

===================================================================
--- original.js
+++ change.js
@@ -45,9 +45,9 @@
 	background.width = 2048;
 	background.height = 2732;
 	var player = self.addChild(new Player());
 	player.x = 200;
-	player.y = 2732 * 0.8;
+	player.y = 2732 / 2;
 	var upButton = self.createAsset('upButton', 'Button for moving up', .5, .5);
 	upButton.x = 700;
 	upButton.y = 2732 - 400;
 	upButton.on('down', function () {
@@ -79,10 +79,8 @@
 	var tickOffset = 0;
 	LK.on('tick', function () {
 		player.move();
 		if (isGameOver) {
-			player.x = 200;
-			player.y = 2732 * 0.8;
 			LK.effects.flashScreen(0xff0000, 1000);
 			LK.showGameOver();
 		}
 		for (var a = obstacles.length - 1; a >= 0; a--) {