===================================================================
--- original.js
+++ change.js
@@ -1,19 +1,36 @@
 /**** 
 * Classes
 ****/
 // Balloon class
-var Balloon = Container.expand(function () {
+var Knife = Container.expand(function () {
 	var self = Container.call(this);
-	var balloonGraphics = self.attachAsset('balloon', {
+	var knifeGraphics = self.attachAsset('balloon', {
+		// Reusing balloon asset for knife
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.speed = 2;
+	self.verticalSpeed = 5;
+	self.horizontalSpeed = 0;
+	self.direction = 1; // 1 for up, -1 for down
 	self.move = function () {
-		self.y -= self.speed;
+		self.y -= self.verticalSpeed * self.direction;
+		// Reverse direction if it hits the top or bottom of the screen
+		if (self.y < 0 || self.y > game.height) {
+			self.direction *= -1;
+		}
 	};
-	self.pop = function () {
+	self.shift = function (shiftX) {
+		self.x += shiftX;
+		// Keep within game bounds
+		if (self.x < 0) {
+			self.x = 0;
+		}
+		if (self.x > game.width) {
+			self.x = game.width;
+		}
+	};
+	self.destroyKnife = function () {
 		self.destroy();
 	};
 });
 // Basket class
@@ -41,15 +58,15 @@
 
 /**** 
 * Game Code
 ****/
-// Define the balloon asset
 // Initialize the basket
+// Define the balloon asset
 var basket = game.addChild(new Basket());
 basket.x = game.width / 2;
 basket.y = game.height - basket.height / 2;
-// Initialize the balloons array
-var balloons = [];
+// Initialize the knives array
+var knives = [];
 // Handle touch move events to move the basket
 function handleMove(obj) {
 	var event = obj.event;
 	var pos = event.getLocalPosition(game);
@@ -58,32 +75,37 @@
 // Attach the move event listener to the game
 game.on('move', handleMove);
 // Game tick event for updating game elements
 LK.on('tick', function () {
-	// Move and check balloons
-	for (var i = balloons.length - 1; i >= 0; i--) {
-		balloons[i].move();
-		// Check if balloon is off-screen
-		if (balloons[i].y + balloons[i].height / 2 < 0) {
-			balloons[i].destroy();
-			balloons.splice(i, 1);
+	// Move and check knives
+	for (var i = knives.length - 1; i >= 0; i--) {
+		knives[i].move();
+		// Shift knives to the sides
+		if (LK.ticks % 60 == 0) {
+			// Every second
+			knives[i].shift((Math.random() * 2 - 1) * 20); // Random shift between -20 and 20
 		}
+		// Check if knife is off-screen
+		if (knives[i].y < 0 || knives[i].y > game.height) {
+			knives[i].destroyKnife();
+			knives.splice(i, 1);
+		}
 		// Check for collision with basket
-		if (basket.intersects(balloons[i])) {
-			balloons[i].pop();
-			balloons.splice(i, 1);
+		if (basket.intersects(knives[i])) {
+			knives[i].destroyKnife();
+			knives.splice(i, 1);
 			// Increment score
 			LK.setScore(LK.getScore() + 1);
 		}
 	}
-	// Spawn balloons at a regular interval
+	// Spawn knives at a regular interval
 	if (LK.ticks % 120 == 0) {
 		// Every 2 seconds
-		var newBalloon = new Balloon();
-		newBalloon.x = Math.random() * (game.width - newBalloon.width) + newBalloon.width / 2;
-		newBalloon.y = game.height;
-		balloons.push(newBalloon);
-		game.addChild(newBalloon);
+		var newKnife = new Knife();
+		newKnife.x = Math.random() * (game.width - newKnife.width) + newKnife.width / 2;
+		newKnife.y = game.height;
+		knives.push(newKnife);
+		game.addChild(newKnife);
 	}
 });
 // Initialize the score text
 var scoreTxt = new Text2('0', {