===================================================================
--- original.js
+++ change.js
@@ -63,22 +63,8 @@
 	self.down = function (x, y, obj) {
 		hero.x += hero.speed;
 	};
 });
-var Rock = Container.expand(function () {
-	var self = Container.call(this);
-	var rockGraphics = self.attachAsset('rock', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.speed = 4;
-	self.update = function () {
-		self.y += self.speed;
-		if (self.y > 2732) {
-			self.destroy();
-		}
-	};
-});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -125,29 +111,18 @@
 	// Update obstacles
 	for (var i = obstacles.length - 1; i >= 0; i--) {
 		obstacles[i].update();
 		if (hero.intersects(obstacles[i])) {
-			if (obstacles[i] instanceof Rock) {
-				obstacles[i].destroy();
-				obstacles.splice(i, 1);
-				score += 10; // Increase score by 10 when hero touches a rock
-				scoreTxt.setText(score); // Update score text
-			} else {
-				LK.effects.flashScreen(0xff0000, 1000);
-				LK.showGameOver();
-			}
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
 		}
 	}
 	// Spawn new obstacles
 	if (LK.ticks % 20 == 0) {
 		for (var j = 0; j < 2; j++) {
 			// Spawn two obstacles at a time
 			var newObstacle;
-			if (Math.random() > 0.7) {
-				newObstacle = new Obstacle();
-			} else {
-				newObstacle = new Rock();
-			}
+			newObstacle = new Obstacle();
 			newObstacle.x = Math.random() * 2048;
 			newObstacle.y = 0;
 			obstacles.push(newObstacle);
 			game.addChild(newObstacle);