===================================================================
--- original.js
+++ change.js
@@ -96,8 +96,21 @@
 	self.update = function () {
 		// Update logic for the obstacle
 	};
 });
+// PowerUp class representing a power-up item
+var PowerUp = Container.expand(function () {
+	var self = Container.call(this);
+	var powerUpGraphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		// Move the power-up down the screen
+		self.y += self.speed;
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -107,8 +120,21 @@
 
 /**** 
 * Game Code
 ****/ 
+// Set interval to spawn power-ups
+var powerUpSpawnInterval = 10000;
+var powerUpSpawnTimer = LK.setInterval(spawnPowerUp, powerUpSpawnInterval);
+// Function to spawn power-ups
+function spawnPowerUp() {
+	var powerUp = new PowerUp();
+	powerUp.x = Math.random() * 2048;
+	powerUp.y = -100;
+	powerUps.push(powerUp);
+	game.addChild(powerUp);
+}
+// Initialize array to keep track of power-ups
+var powerUps = [];
 // Set interval to spawn monsters
 var monsterSpawnInterval = 3000;
 var monsterSpawnTimer = LK.setInterval(spawnMonster, monsterSpawnInterval);
 // Function to spawn monsters
@@ -210,8 +236,17 @@
 			scoreText.setText("Score: " + score);
 			LK.showGameOver();
 		}
 	}
+	// Check for collisions between ninja and power-ups
+	for (var p = 0; p < powerUps.length; p++) {
+		if (ninja.intersects(powerUps[p])) {
+			// Handle collision with power-up
+			ninja.speed += 5; // Increase ninja's speed temporarily
+			powerUps[p].destroy();
+			powerUps.splice(p, 1);
+		}
+	}
 	// Check for collisions between ninja and obstacles
 	for (var l = 0; l < obstacles.length; l++) {
 		if (ninja.intersects(obstacles[l])) {
 			// Handle collision with obstacle