===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,164 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Bird = Container.expand(function () {
+	var self = Container.call(this);
+	var birdGraphics = self.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocity = 0;
+	self.gravity = 0.8;
+	self.flapPower = -12;
+	self.flap = function () {
+		self.velocity = self.flapPower;
+		LK.getSound('flap').play();
+		// Add flap animation
+		birdGraphics.rotation = -0.3;
+		tween(birdGraphics, {
+			rotation: 0.3
+		}, {
+			duration: 300
+		});
+	};
+	self.update = function () {
+		self.velocity += self.gravity;
+		self.y += self.velocity;
+		// Rotate bird based on velocity
+		birdGraphics.rotation = Math.max(-0.5, Math.min(0.5, self.velocity * 0.05));
+	};
+	return self;
+});
+var Pipe = Container.expand(function () {
+	var self = Container.call(this);
+	self.gapSize = 300;
+	self.speed = 4;
+	self.scored = false;
+	var topPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	var bottomPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 0
+	});
+	self.setGapPosition = function (gapY) {
+		topPipe.y = gapY - self.gapSize / 2;
+		bottomPipe.y = gapY + self.gapSize / 2;
+	};
+	self.update = function () {
+		self.x -= self.speed;
+	};
+	self.checkCollision = function (bird) {
+		var birdBounds = {
+			x: bird.x - 30,
+			y: bird.y - 30,
+			width: 60,
+			height: 60
+		};
+		var topPipeBounds = {
+			x: self.x - 60,
+			y: topPipe.y - 400,
+			width: 120,
+			height: 400
+		};
+		var bottomPipeBounds = {
+			x: self.x - 60,
+			y: bottomPipe.y,
+			width: 120,
+			height: 400
+		};
+		return birdBounds.x < topPipeBounds.x + topPipeBounds.width && birdBounds.x + birdBounds.width > topPipeBounds.x && birdBounds.y < topPipeBounds.y + topPipeBounds.height && birdBounds.y + birdBounds.height > topPipeBounds.y || birdBounds.x < bottomPipeBounds.x + bottomPipeBounds.width && birdBounds.x + birdBounds.width > bottomPipeBounds.x && birdBounds.y < bottomPipeBounds.y + bottomPipeBounds.height && birdBounds.y + birdBounds.height > bottomPipeBounds.y;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var bird = game.addChild(new Bird());
+bird.x = 400;
+bird.y = 1366;
+var ground = game.addChild(LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0
+}));
+ground.x = 0;
+ground.y = 2632;
+var pipes = [];
+var pipeSpawnTimer = 0;
+var pipeSpawnInterval = 90; // Spawn pipe every 1.5 seconds at 60fps
+var gameStarted = false;
+var scoreTxt = new Text2('0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+var instructionTxt = new Text2('TAP TO START', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+instructionTxt.anchor.set(0.5, 0.5);
+instructionTxt.x = 1024;
+instructionTxt.y = 800;
+game.addChild(instructionTxt);
+game.down = function (x, y, obj) {
+	if (!gameStarted) {
+		gameStarted = true;
+		game.removeChild(instructionTxt);
+	}
+	bird.flap();
+};
+game.update = function () {
+	if (!gameStarted) return;
+	// Check if bird hits ground or ceiling
+	if (bird.y > 2632 || bird.y < 0) {
+		LK.showGameOver();
+		return;
+	}
+	// Spawn pipes
+	pipeSpawnTimer++;
+	if (pipeSpawnTimer >= pipeSpawnInterval) {
+		pipeSpawnTimer = 0;
+		var newPipe = new Pipe();
+		newPipe.x = 2048 + 60;
+		var gapY = Math.random() * (2000 - 600) + 600; // Random gap between y=600 and y=2000
+		newPipe.setGapPosition(gapY);
+		pipes.push(newPipe);
+		game.addChild(newPipe);
+	}
+	// Update and check pipes
+	for (var i = pipes.length - 1; i >= 0; i--) {
+		var pipe = pipes[i];
+		// Check collision
+		if (pipe.checkCollision(bird)) {
+			LK.showGameOver();
+			return;
+		}
+		// Check scoring
+		if (!pipe.scored && bird.x > pipe.x) {
+			pipe.scored = true;
+			LK.setScore(LK.getScore() + 1);
+			scoreTxt.setText(LK.getScore().toString());
+			LK.getSound('score').play();
+		}
+		// Remove pipes that are off-screen
+		if (pipe.x < -120) {
+			pipe.destroy();
+			pipes.splice(i, 1);
+		}
+	}
+};
\ No newline at end of file