/**** 
* Classes
****/ 
// Define a class for bullets
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = game.level.bulletSpeed;
	self.update = function () {
		self.y -= self.speed;
	};
});
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = game.level.enemySpeed;
	self.update = function () {
		// Update logic for enemy
	};
});
//<Assets used in the game will automatically appear here>
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		// Update logic for player
	};
});

/**** 
* Initialize Game
****/ 
// Define a class for levels
var game = new LK.Game({
	backgroundColor: 0x1e90ff //Init game with sky blue background
});

/**** 
* Game Code
****/ 
// Define a class for levels
var Level = function Level(difficulty) {
	this.difficulty = difficulty;
	this.enemySpeed = difficulty === 'hard' ? 5 : difficulty === 'normal' ? 3 : 1;
	this.bulletSpeed = difficulty === 'hard' ? 10 : difficulty === 'normal' ? 7 : 5;
};
game.level = new Level('easy');
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 150;
// Initialize enemies array
var enemies = [];
// Initialize bullets array
var bullets = [];
// Function to spawn enemies
function spawnEnemy() {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = 0;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Function to handle player movement
function handlePlayerMovement(x, y, obj) {
	player.x = x;
	player.y = y;
}
// Function to handle shooting
function shootBullet() {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
}
// Set up game event listeners
game.down = function (x, y, obj) {
	handlePlayerMovement(x, y, obj);
};
game.move = function (x, y, obj) {
	handlePlayerMovement(x, y, obj);
};
game.up = function (x, y, obj) {
	// Logic for when touch is released
};
// Game update loop
game.update = function () {
	// Update player
	player.update();
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (enemies[i].y > 2732) {
			enemies[i].destroy();
			enemies.splice(i, 1);
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		if (bullets[j].y < 0) {
			bullets[j].destroy();
			bullets.splice(j, 1);
		}
	}
	// Check for collisions between bullets and enemies
	for (var k = bullets.length - 1; k >= 0; k--) {
		for (var l = enemies.length - 1; l >= 0; l--) {
			if (bullets[k].intersects(enemies[l])) {
				bullets[k].destroy();
				enemies[l].destroy();
				bullets.splice(k, 1);
				enemies.splice(l, 1);
				break;
			}
		}
	}
	// Spawn new enemies periodically
	if (LK.ticks % 60 === 0) {
		spawnEnemy();
	}
};
// Set an interval to shoot bullets
LK.setInterval(shootBullet, 500);

===================================================================
--- original.js
+++ change.js
@@ -43,9 +43,9 @@
 * Initialize Game
 ****/ 
 // Define a class for levels
 var game = new LK.Game({
-	backgroundColor: 0x000000 //Init game with black background
+	backgroundColor: 0x1e90ff //Init game with sky blue background
 });
 
 /**** 
 * Game Code