===================================================================
--- original.js
+++ change.js
@@ -117,8 +117,25 @@
 		// Move the power-up down the screen
 		self.y += self.speed;
 	};
 });
+// New UpwardCreature class representing a creature that moves from bottom to top
+var UpwardCreature = Container.expand(function () {
+	var self = Container.call(this);
+	var creatureGraphics = self.attachAsset('creature', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		// Move the creature up the screen
+		self.y -= self.speed;
+		// Check if the creature has moved off the top of the screen
+		if (self.y < -100) {
+			self.destroy();
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -128,8 +145,11 @@
 
 /**** 
 * Game Code
 ****/ 
+// Set interval to spawn upward moving creatures
+var upwardCreatureSpawnInterval = 4000;
+var upwardCreatureSpawnTimer = LK.setInterval(spawnUpwardCreature, upwardCreatureSpawnInterval);
 // Set interval to spawn power-ups
 var powerUpSpawnInterval = 10000;
 var powerUpSpawnTimer = LK.setInterval(spawnPowerUp, powerUpSpawnInterval);
 // Function to spawn power-ups
@@ -316,5 +336,13 @@
 };
 game.up = function (x, y, obj) {
 	// Stop the ninja's movement when the touch is released
 	ninja.speed = 0;
-};
\ No newline at end of file
+};
+// Function to spawn upward moving creatures
+function spawnUpwardCreature() {
+	var upwardCreature = new UpwardCreature();
+	upwardCreature.x = Math.random() * 2048;
+	upwardCreature.y = 2732 + 100; // Start below the screen
+	creatures.push(upwardCreature);
+	game.addChild(upwardCreature);
+}
\ No newline at end of file