/**** 
* Classes
****/
// Marshmallow character class
var Character = Container.expand(function () {
	var self = Container.call(this);
	var characterGraphics = self.createAsset('marshmallow_clipart', 'Fluffy marshmallow character clipart', 0.5, 1);
	self.velocity = {
		x: 0,
		y: 0
	};
	self.isJumping = false;
	self.jump = function () {
		if (!self.isJumping) {
			self.velocity.y = -15;
			self.isJumping = true;
		}
	};
	self.update = function () {
		self.y += self.velocity.y;
		self.velocity.y += 0.5; // gravity effect
		if (self.y > game.height - characterGraphics.height) {
			self.y = game.height - characterGraphics.height;
			self.isJumping = false;
		}
	};
});
// Trap class for obstacles
var Trap = Container.expand(function () {
	var self = Container.call(this);
	var trapGraphics = self.createAsset('trap_clipart', 'Tasty trap obstacle clipart', 0.5, 1);
	self.speed = 5;
	self.move = function () {
		self.x -= self.speed;
	};
	self.isOffScreen = function () {
		return self.x < -trapGraphics.width;
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0xFFFFFF // Init game with white background
});

/**** 
* Game Code
****/
var character = game.addChild(new Character());
character.x = game.width / 4;
character.y = game.height - 100;
var traps = [];
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#000000"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
game.on('down', function (obj) {
	character.jump();
});
var spawnTrap = function spawnTrap() {
	var trap = new Trap();
	trap.x = game.width;
	trap.y = game.height - 50;
	traps.push(trap);
	game.addChild(trap);
};
var updateScore = function updateScore() {
	LK.setScore(LK.getScore() + 1);
	scoreTxt.setText(LK.getScore());
};
var gameOver = function gameOver() {
	LK.effects.flashScreen(0xff0000, 1000);
	LK.showGameOver();
};
LK.on('tick', function () {
	character.update();
	for (var i = traps.length - 1; i >= 0; i--) {
		traps[i].move();
		if (traps[i].isOffScreen()) {
			traps[i].destroy();
			traps.splice(i, 1);
		} else if (character.intersects(traps[i])) {
			gameOver();
		}
	}
	if (LK.ticks % 120 == 0) {
		spawnTrap();
	}
	if (LK.ticks % 60 == 0) {
		updateScore();
	}
});

===================================================================
--- original.js
+++ change.js
@@ -1,11 +1,11 @@
 /**** 
 * Classes
 ****/
 // Marshmallow character class
-var Marshmallow = Container.expand(function () {
+var Character = Container.expand(function () {
 	var self = Container.call(this);
-	var marshmallowGraphics = self.createAsset('marshmallow_clipart', 'Fluffy marshmallow character clipart', 0.5, 1);
+	var characterGraphics = self.createAsset('marshmallow_clipart', 'Fluffy marshmallow character clipart', 0.5, 1);
 	self.velocity = {
 		x: 0,
 		y: 0
 	};
@@ -18,10 +18,10 @@
 	};
 	self.update = function () {
 		self.y += self.velocity.y;
 		self.velocity.y += 0.5; // gravity effect
-		if (self.y > game.height - marshmallowGraphics.height) {
-			self.y = game.height - marshmallowGraphics.height;
+		if (self.y > game.height - characterGraphics.height) {
+			self.y = game.height - characterGraphics.height;
 			self.isJumping = false;
 		}
 	};
 });
@@ -47,20 +47,20 @@
 
 /**** 
 * Game Code
 ****/
-var marshmallow = game.addChild(new Marshmallow());
-marshmallow.x = game.width / 4;
-marshmallow.y = game.height - 100;
+var character = game.addChild(new Character());
+character.x = game.width / 4;
+character.y = game.height - 100;
 var traps = [];
 var scoreTxt = new Text2('0', {
 	size: 150,
 	fill: "#000000"
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
 game.on('down', function (obj) {
-	marshmallow.jump();
+	character.jump();
 });
 var spawnTrap = function spawnTrap() {
 	var trap = new Trap();
 	trap.x = game.width;
@@ -76,15 +76,15 @@
 	LK.effects.flashScreen(0xff0000, 1000);
 	LK.showGameOver();
 };
 LK.on('tick', function () {
-	marshmallow.update();
+	character.update();
 	for (var i = traps.length - 1; i >= 0; i--) {
 		traps[i].move();
 		if (traps[i].isOffScreen()) {
 			traps[i].destroy();
 			traps.splice(i, 1);
-		} else if (marshmallow.intersects(traps[i])) {
+		} else if (character.intersects(traps[i])) {
 			gameOver();
 		}
 	}
 	if (LK.ticks % 120 == 0) {