===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,197 @@
-/****
+/**** 
+* 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.flipped = false;
+	self.flap = function () {
+		self.velocity = self.flapPower;
+		self.flipped = !self.flipped;
+		if (self.flipped) {
+			birdGraphics.rotation = Math.PI;
+		} else {
+			birdGraphics.rotation = 0;
+		}
+		LK.getSound('flap').play();
+	};
+	self.update = function () {
+		self.velocity += self.gravity;
+		self.y += self.velocity;
+		// Rotate bird based on velocity
+		var targetRotation = self.flipped ? Math.PI : 0;
+		if (self.velocity > 0) {
+			targetRotation += self.flipped ? -0.5 : 0.5;
+		} else {
+			targetRotation += self.flipped ? 0.3 : -0.3;
+		}
+		birdGraphics.rotation = targetRotation;
+		// Check boundaries
+		if (self.y < -30 || self.y > 2732 + 30) {
+			gameOver = true;
+		}
+	};
+	return self;
+});
+var Pipe = Container.expand(function (isTop) {
+	var self = Container.call(this);
+	var pipeGraphics = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: isTop ? 1 : 0
+	});
+	self.speed = -4;
+	self.scored = false;
+	self.isTop = isTop;
+	self.update = function () {
+		self.x += self.speed;
+		if (self.x < -100) {
+			self.destroy();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var bird;
+var pipes = [];
+var gameOver = false;
+var gameStarted = false;
+var pipeTimer = 0;
+var gapSize = 300;
+var pipeSpacing = 400;
+// UI Elements
+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);
+game.addChild(instructionTxt);
+instructionTxt.x = 1024;
+instructionTxt.y = 1366;
+// Initialize bird
+bird = new Bird();
+bird.x = 400;
+bird.y = 1366;
+game.addChild(bird);
+function createPipePair() {
+	var gapCenter = 400 + Math.random() * (2732 - 800);
+	var topHeight = gapCenter - gapSize / 2;
+	var bottomY = gapCenter + gapSize / 2;
+	// Top pipe
+	var topPipe = new Pipe(true);
+	topPipe.x = 2048 + 100;
+	topPipe.y = topHeight;
+	pipes.push(topPipe);
+	game.addChild(topPipe);
+	// Bottom pipe
+	var bottomPipe = new Pipe(false);
+	bottomPipe.x = 2048 + 100;
+	bottomPipe.y = bottomY;
+	pipes.push(bottomPipe);
+	game.addChild(bottomPipe);
+}
+function resetGame() {
+	// Remove all pipes
+	for (var i = pipes.length - 1; i >= 0; i--) {
+		pipes[i].destroy();
+	}
+	pipes = [];
+	// Reset bird
+	bird.x = 400;
+	bird.y = 1366;
+	bird.velocity = 0;
+	bird.flipped = false;
+	bird.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	}).rotation = 0;
+	// Reset game state
+	gameOver = false;
+	gameStarted = false;
+	pipeTimer = 0;
+	LK.setScore(0);
+	scoreTxt.setText('0');
+	// Show instruction
+	instructionTxt.alpha = 1;
+}
+game.down = function (x, y, obj) {
+	if (gameOver) {
+		LK.showGameOver();
+		return;
+	}
+	if (!gameStarted) {
+		gameStarted = true;
+		instructionTxt.alpha = 0;
+	}
+	bird.flap();
+};
+game.update = function () {
+	if (gameOver) {
+		return;
+	}
+	if (!gameStarted) {
+		return;
+	}
+	// Update bird
+	bird.update();
+	// Create pipes
+	pipeTimer++;
+	if (pipeTimer >= pipeSpacing / 4) {
+		createPipePair();
+		pipeTimer = 0;
+		// Increase difficulty slightly
+		if (gapSize > 200) {
+			gapSize -= 0.5;
+		}
+	}
+	// Update pipes and check collisions
+	for (var i = pipes.length - 1; i >= 0; i--) {
+		var pipe = pipes[i];
+		pipe.update();
+		// Check if pipe is destroyed
+		if (pipe.parent === null) {
+			pipes.splice(i, 1);
+			continue;
+		}
+		// Check collision
+		if (bird.intersects(pipe)) {
+			LK.getSound('hit').play();
+			gameOver = true;
+			LK.showGameOver();
+			return;
+		}
+		// Check scoring (only for top pipes to avoid double scoring)
+		if (pipe.isTop && !pipe.scored && pipe.x < bird.x - 30) {
+			pipe.scored = true;
+			LK.setScore(LK.getScore() + 1);
+			scoreTxt.setText(LK.getScore().toString());
+			LK.getSound('score').play();
+		}
+	}
+};
\ No newline at end of file