/**** 
* Classes
****/ 
// Define the Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
	};
});
// Define the Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var size = Math.random() * 100 + 100;
	var enemyGraphics = self.attachAsset('enemy', {
		width: size,
		height: size,
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.rotationSpeed = Math.random() * 0.1 - 0.05;
	self.update = function () {
		self.y += self.speed;
		self.rotation += self.rotationSpeed;
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		// Player movement logic will be handled in game.down and game.move
		// Shooting logic
		if (LK.ticks - lastShot >= fireRate * 60) {
			var bullet = new Bullet();
			bullet.x = self.x;
			bullet.y = self.y;
			bullets.push(bullet);
			game.addChild(bullet);
			lastShot = LK.ticks;
		}
	};
});
// Define the PowerUp class
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var powerUpGraphics = self.attachAsset('powerUp', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Initialize variables
var player;
var enemies = [];
var bullets = [];
var powerUps = [];
var score = 0;
var lives = 10;
var level = 1;
var levelText;
var scoreText;
var livesText;
var enemySpeedMultiplier = 1;
var enemySpawnRate = 1000;
var enemySpawnTimer;
// Function to start a new level
function startLevel() {
	levelText.setText('LEVEL ' + level);
	levelText.visible = true;
	// Increase enemy speed and spawn rate by 15% each level
	enemySpeedMultiplier *= 1.15;
	enemySpawnRate *= 0.85;
	LK.setTimeout(function () {
		levelText.visible = false;
		spawnEnemies();
	}, 4000);
}
// Function to spawn enemies
function spawnEnemies() {
	enemySpawnTimer = LK.setInterval(function () {
		var enemy = new Enemy();
		enemy.x = Math.random() * 2048;
		enemy.y = -50;
		enemy.speed *= enemySpeedMultiplier;
		enemies.push(enemy);
		game.addChild(enemy);
		// 85% chance to spawn a power-up
		if (Math.random() < 0.85) {
			var powerUp = new PowerUp();
			powerUp.x = Math.random() * 2048;
			powerUp.y = -50;
			game.addChild(powerUp);
		}
	}, enemySpawnRate);
}
// Function to update score and level
function updateScore(points) {
	score += points;
	scoreText.setText('Score: ' + score);
	if (score >= 2500 * Math.pow(2.5, level - 1)) {
		level++;
		// Increase enemy speed and spawn rate by 10% each level
		enemySpeedMultiplier *= 1.1;
		enemySpawnRate *= 0.9;
		clearEnemies();
		startLevel();
	}
}
// Function to clear enemies
function clearEnemies() {
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].destroy();
	}
	enemies = [];
	LK.clearInterval(enemySpawnTimer);
}
// Initialize player
player = new Player();
player.x = 1024;
player.y = 2500;
game.addChild(player);
// Initialize texts
levelText = new Text2('LEVEL 1', {
	size: 150,
	fill: 0xFFFFFF
});
levelText.anchor.set(0.5, 0.5);
LK.gui.center.addChild(levelText);
scoreText = new Text2('Score: 0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
LK.gui.topLeft.addChild(scoreText);
livesText = new Text2('Lives: 10', {
	size: 100,
	fill: 0xFFFFFF
});
livesText.anchor.set(1, 0);
LK.gui.topRight.addChild(livesText);
// Start the first level
startLevel();
// Handle player movement
game.down = function (x, y, obj) {
	player.x = x;
};
game.move = function (x, y, obj) {
	player.x = x;
};
// Handle shooting
var lastShot = 0;
var fireRate = 0.5;
game.up = function (x, y, obj) {
	if (LK.ticks - lastShot >= fireRate * 60) {
		var bullet = new Bullet();
		bullet.x = player.x;
		bullet.y = player.y;
		bullets.push(bullet);
		game.addChild(bullet);
		lastShot = LK.ticks;
	}
};
// Game update loop
game.update = function () {
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].update();
		if (bullets[i].y < -50) {
			bullets[i].destroy();
			bullets.splice(i, 1);
		}
	}
	// 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);
			lives--;
			livesText.setText('Lives: ' + lives);
			if (lives <= 0) {
				LK.showGameOver();
			}
		}
	}
	// Update power-ups
	for (var i = powerUps.length - 1; i >= 0; i--) {
		powerUps[i].update();
		if (powerUps[i].y > 2732) {
			powerUps[i].destroy();
			powerUps.splice(i, 1);
		}
		// Collect power-up if it intersects with the player
		if (powerUps[i] && powerUps[i].intersects(player)) {
			powerUps[i].destroy();
			powerUps.splice(i, 1);
			// Add power-up effect here
			// Placeholder function as the specific power-up effect is not defined
			var powerUpEffect = function powerUpEffect() {
				// Add power-up effect code here
			};
			powerUpEffect();
		}
	}
	// Check for collisions
	for (var i = bullets.length - 1; i >= 0; i--) {
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (bullets[i].intersects(enemies[j])) {
				bullets[i].destroy();
				bullets.splice(i, 1);
				// Add explosion effect
				var explosion = function explosion(x, y, scale, speed, rotationSpeed) {
					var explosionAsset = LK.getAsset('explosion', {
						anchorX: 0.5,
						anchorY: 0.5,
						x: x,
						y: y,
						scaleX: scale,
						scaleY: scale
					});
					explosionAsset.speed = speed;
					explosionAsset.rotationSpeed = rotationSpeed;
					game.addChild(explosionAsset);
					explosionAsset.update = function () {
						explosionAsset.y += explosionAsset.speed;
						explosionAsset.rotation += explosionAsset.rotationSpeed;
					};
					LK.setTimeout(function () {
						explosionAsset.destroy();
					}, 200);
				};
				explosion(enemies[j].x, enemies[j].y, 1, enemies[j].speed, enemies[j].rotationSpeed);
				// 85% chance to spawn a power-up
				if (Math.random() < 0.85) {
					var powerUp = new PowerUp();
					powerUp.x = enemies[j].x;
					powerUp.y = enemies[j].y;
					powerUps.push(powerUp);
					game.addChild(powerUp);
				}
				enemies[j].destroy();
				enemies.splice(j, 1);
				updateScore(50);
				break;
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -256,14 +256,16 @@
 						explosionAsset.destroy();
 					}, 200);
 				};
 				explosion(enemies[j].x, enemies[j].y, 1, enemies[j].speed, enemies[j].rotationSpeed);
-				// Create power-up at enemy position
-				var powerUp = new PowerUp();
-				powerUp.x = enemies[j].x;
-				powerUp.y = enemies[j].y;
-				powerUps.push(powerUp);
-				game.addChild(powerUp);
+				// 85% chance to spawn a power-up
+				if (Math.random() < 0.85) {
+					var powerUp = new PowerUp();
+					powerUp.x = enemies[j].x;
+					powerUp.y = enemies[j].y;
+					powerUps.push(powerUp);
+					game.addChild(powerUp);
+				}
 				enemies[j].destroy();
 				enemies.splice(j, 1);
 				updateScore(50);
 				break;