===================================================================
--- original.js
+++ change.js
@@ -63,8 +63,22 @@
 	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 = 5;
+	self.update = function () {
+		self.y += self.speed;
+		if (self.y > 2732) {
+			self.destroy();
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -81,8 +95,9 @@
 var hero = game.addChild(new Hero());
 hero.x = leftButton.x;
 hero.y = leftButton.y - 200; // Adjusted to ensure hero spawns above the left button
 var obstacles = [];
+var rocks = [];
 var dot = game.addChild(new Dot());
 dot.x = 2048 / 2;
 dot.y = 2732 / 2 - 100;
 var score = 0;
@@ -115,8 +130,16 @@
 			LK.effects.flashScreen(0xff0000, 1000);
 			LK.showGameOver();
 		}
 	}
+	// Update rocks
+	for (var i = rocks.length - 1; i >= 0; i--) {
+		rocks[i].update();
+		if (hero.intersects(rocks[i])) {
+			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
@@ -127,8 +150,16 @@
 			obstacles.push(newObstacle);
 			game.addChild(newObstacle);
 		}
 	}
+	// Spawn new rocks
+	if (LK.ticks % 50 == 0) {
+		var newRock = new Rock();
+		newRock.x = Math.random() * 2048;
+		newRock.y = 0;
+		rocks.push(newRock);
+		game.addChild(newRock);
+	}
 	// Check if hero touches the left or right edge of the screen
 	if (hero.x <= 0 || hero.x >= 2048) {
 		LK.effects.flashScreen(0xff0000, 1000);
 		LK.showGameOver();