var Cube = Container.expand(function () {
	var self = Container.call(this);
	var cubeGraphics = self.createAsset('cube', 'Cube Graphics', .5, .5);
	cubeGraphics.tint = Math.floor(Math.random() * 16777215);
	self.speed = 0;
	self.move = function (direction) {
		if (self.speed !== 0) {
			self.y += self.speed;
			if (direction === 'left' && self.x - 10 >= 0) {
				self.x -= 10;
			} else if (direction === 'right' && self.x + 10 <= 2048) {
				self.x += 10;
			}
		}
	};
	self.stack = function (otherCube, intersection) {
		if (otherCube) {
			if (intersection === 'side') {
				if (self.x < otherCube.x) {
					self.x = otherCube.x - self.width;
				} else {
					self.x = otherCube.x + otherCube.width;
				}
			} else {
				self.y = otherCube.y - self.height;
			}
		} else if (self.y + self.height >= 2732) {
			self.y = 2732 - self.height;
		}
		self.speed = 0;
	};
	self.intersectsWith = function (otherCube) {
		var intersects = self.x < otherCube.x + otherCube.width && self.x + self.width > otherCube.x && self.y < otherCube.y + otherCube.height && self.y + self.height > otherCube.y;
		if (intersects) {
			if (self.x + self.width - otherCube.x < 20 || otherCube.x + otherCube.width - self.x < 20) {
				return 'side';
			}
			return 'top';
		}
		return false;
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var background = self.createAsset('background', 'Background Image', 0, 0);
	background.width = 2048;
	background.height = 2732;
	var overlayBox = self.createAsset('overlayBox', 'Overlay Box', 0, 0);
	overlayBox.width = 1948;
	overlayBox.x = 1024 - overlayBox.width / 2;
	overlayBox.height = 2432;
	overlayBox.y = 1450 - overlayBox.height / 2;
	overlayBox.alpha = 0.3;
	self.addChild(overlayBox);
	var cubes = [];
	var cubeSpeed = 5;
	function spawnCube() {
		var newCube = new Cube();
		newCube.x = 1024;
		newCube.y = 400;
		newCube.speed = cubeSpeed;
		cubes.push(newCube);
		self.addChild(newCube);
	}
	function checkCubes() {
		for (var i = cubes.length - 1; i >= 0; i--) {
			if (cubes[i].y > 2732) {
				cubes[i].destroy();
				cubes.splice(i, 1);
			}
		}
	}
	var leftCircle = self.createAsset('circle', 'Left Circle', .5, .5);
	leftCircle.tint = 0xFFFFFF;
	leftCircle.alpha = 0.6;
	leftCircle.x = -300 + leftCircle.width / 2;
	leftCircle.y = 2732 / 2;
	self.addChild(leftCircle);
	var leftButton = self.createAsset('leftButton', 'Left Button', .5, .5);
	leftButton.x = leftCircle.x + 125;
	leftButton.y = leftCircle.y;
	leftButton.rotation = Math.PI;
	leftButton.scale.set(1.5);
	self.addChild(leftButton);
	var rightCircle = self.createAsset('circle', 'Right Circle', .5, .5);
	rightCircle.tint = 0xFFFFFF;
	rightCircle.alpha = 0.6;
	rightCircle.x = 1860 + rightCircle.width / 2;
	rightCircle.y = 2732 / 2;
	self.addChild(rightCircle);
	var rightButton = self.createAsset('rightButton', 'Right Button', .5, .5);
	rightButton.x = rightCircle.x - 125;
	rightButton.y = rightCircle.y;
	rightButton.scale.set(1.5);
	self.addChild(rightButton);
	var spawnButton = self.createAsset('spawnButton', 'Spawn Button', .5, .5);
	spawnButton.x = 1024;
	spawnButton.y = 150;
	self.addChild(spawnButton);
	var speedLabel = new Text2('Drop speed', {
		size: 70,
		fill: '#ffffff'
	});
	speedLabel.x = 1460;
	speedLabel.y = 20;
	self.addChild(speedLabel);
	var speedText = new Text2(cubeSpeed, {
		size: 100,
		fill: '#000000'
	});
	speedText.x = 1600;
	speedText.y = 100;
	self.addChild(speedText);
	var speedUpButton = self.createAsset('speedUpButton', 'Speed Up Button', .5, .5);
	speedUpButton.x = 1024 + 750;
	speedUpButton.y = 150;
	self.addChild(speedUpButton);
	var speedDownButton = self.createAsset('speedDownButton', 'Speed Down Button', .5, .5);
	speedDownButton.x = 1024 + 500;
	speedDownButton.y = 150;
	speedDownButton.rotation = Math.PI;
	self.addChild(speedDownButton);
	var canSpawn = true;
	spawnButton.on('down', function () {
		if (canSpawn) {
			spawnCube();
			canSpawn = false;
			LK.setTimeout(function () {
				canSpawn = true;
			}, 500);
		}
	});
	speedUpButton.on('down', function () {
		if (cubeSpeed < 12) {
			cubeSpeed++;
			speedText.setText(cubeSpeed);
		}
	});
	speedDownButton.on('down', function () {
		if (cubeSpeed > 1) {
			cubeSpeed--;
			speedText.setText(cubeSpeed);
		}
	});
	var moveDirection = '';
	speedText.setText(cubeSpeed);
	var leftButtonPressed = false;
	leftButton.on('down', function () {
		leftButtonPressed = true;
		leftCircle.alpha = 0.8;
	});
	var rightButtonPressed = false;
	rightButton.on('down', function () {
		rightButtonPressed = true;
		rightCircle.alpha = 0.8;
	});
	rightButton.on('up', function () {
		rightButtonPressed = false;
		rightCircle.alpha = 0.6;
	});
	leftButton.on('up', function () {
		leftButtonPressed = false;
		leftCircle.alpha = 0.6;
	});
	LK.on('tick', function () {
		for (var i = 0; i < cubes.length; i++) {
			if (leftButtonPressed) {
				cubes[i].move('left');
			} else if (rightButtonPressed) {
				cubes[i].move('right');
			} else {
				cubes[i].move(moveDirection);
			}
			var stacked = false;
			for (var j = 0; j < cubes.length; j++) {
				var intersection = cubes[i].intersectsWith(cubes[j]);
				if (i != j && intersection) {
					cubes[i].stack(cubes[j], intersection);
					stacked = true;
					break;
				}
			}
			if (!stacked) {
				if (cubes[i].y + cubes[i].height >= 2732) {
					cubes[i].stack();
				} else if (cubes[i].y <= 200) {
					LK.showGameOver();
				}
			}
		}
		checkCubes();
		moveDirection = '';
	});
});

===================================================================
--- original.js
+++ change.js
@@ -96,28 +96,28 @@
 	var spawnButton = self.createAsset('spawnButton', 'Spawn Button', .5, .5);
 	spawnButton.x = 1024;
 	spawnButton.y = 150;
 	self.addChild(spawnButton);
-	var speedLabel = new Text2('Speed:', {
+	var speedLabel = new Text2('Drop speed', {
 		size: 70,
 		fill: '#ffffff'
 	});
-	speedLabel.x = 1500;
-	speedLabel.y = 50;
+	speedLabel.x = 1460;
+	speedLabel.y = 20;
 	self.addChild(speedLabel);
 	var speedText = new Text2(cubeSpeed, {
 		size: 100,
-		fill: '#ffffff'
+		fill: '#000000'
 	});
-	speedText.x = 1500;
-	speedText.y = 150;
+	speedText.x = 1600;
+	speedText.y = 100;
 	self.addChild(speedText);
 	var speedUpButton = self.createAsset('speedUpButton', 'Speed Up Button', .5, .5);
-	speedUpButton.x = 1024 + 700;
+	speedUpButton.x = 1024 + 750;
 	speedUpButton.y = 150;
 	self.addChild(speedUpButton);
 	var speedDownButton = self.createAsset('speedDownButton', 'Speed Down Button', .5, .5);
-	speedDownButton.x = 1024 + 300;
+	speedDownButton.x = 1024 + 500;
 	speedDownButton.y = 150;
 	speedDownButton.rotation = Math.PI;
 	self.addChild(speedDownButton);
 	var canSpawn = true;