===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,202 @@
-/****
+/**** 
+* 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.maxVelocity = 15;
+	self.flap = function () {
+		self.velocity = self.flapPower;
+		LK.getSound('flap').play();
+		// Flap animation
+		tween(birdGraphics, {
+			rotation: -0.3
+		}, {
+			duration: 100
+		});
+		tween(birdGraphics, {
+			rotation: 0.3
+		}, {
+			duration: 200,
+			onFinish: function onFinish() {
+				tween(birdGraphics, {
+					rotation: 0
+				}, {
+					duration: 100
+				});
+			}
+		});
+	};
+	self.update = function () {
+		self.velocity += self.gravity;
+		if (self.velocity > self.maxVelocity) {
+			self.velocity = self.maxVelocity;
+		}
+		self.y += self.velocity;
+		// Rotate bird based on velocity
+		var targetRotation = Math.min(Math.max(self.velocity * 0.1, -0.5), 0.8);
+		birdGraphics.rotation = targetRotation;
+	};
+	return self;
+});
+var Pipe = Container.expand(function () {
+	var self = Container.call(this);
+	self.gapSize = 300;
+	self.speed = -4;
+	self.scored = false;
+	// Create top pipe
+	self.topPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	// Create bottom pipe  
+	self.bottomPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 0
+	});
+	self.setGapPosition = function (gapY) {
+		self.topPipe.y = gapY - self.gapSize / 2;
+		self.bottomPipe.y = gapY + self.gapSize / 2;
+	};
+	self.update = function () {
+		self.x += self.speed;
+	};
+	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 ground;
+var scoreTxt;
+var gameStarted = false;
+var pipeSpawnTimer = 0;
+var pipeDistance = 400;
+// Create bird
+bird = game.addChild(new Bird());
+bird.x = 300;
+bird.y = 1366; // Center vertically
+// Create ground
+ground = game.addChild(LK.getAsset('ground', {
+	anchorX: 0,
+	anchorY: 0
+}));
+ground.x = 0;
+ground.y = 2732 - 100;
+// Create score display
+scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+scoreTxt.y = 200;
+// Game input handler
+game.down = function (x, y, obj) {
+	if (!gameStarted) {
+		gameStarted = true;
+	}
+	bird.flap();
+};
+// Main game loop
+game.update = function () {
+	if (!gameStarted) return;
+	// Spawn pipes
+	pipeSpawnTimer++;
+	if (pipeSpawnTimer >= pipeDistance / 4) {
+		var newPipe = new Pipe();
+		newPipe.x = 2048 + 60;
+		// Random gap position between 300 and 2000
+		var gapY = 300 + Math.random() * (2000 - 300);
+		newPipe.setGapPosition(gapY);
+		pipes.push(newPipe);
+		game.addChild(newPipe);
+		pipeSpawnTimer = 0;
+	}
+	// Update pipes and check collisions
+	for (var i = pipes.length - 1; i >= 0; i--) {
+		var pipe = pipes[i];
+		// Track last position for scoring
+		if (pipe.lastX === undefined) pipe.lastX = pipe.x;
+		// Check for scoring (bird passes pipe)
+		if (!pipe.scored && pipe.lastX > bird.x && pipe.x <= bird.x) {
+			pipe.scored = true;
+			LK.setScore(LK.getScore() + 1);
+			scoreTxt.setText(LK.getScore());
+			LK.getSound('score').play();
+		}
+		// Remove off-screen pipes
+		if (pipe.x < -120) {
+			pipe.destroy();
+			pipes.splice(i, 1);
+			continue;
+		}
+		// Collision detection
+		var birdBounds = {
+			x: bird.x - 30,
+			y: bird.y - 20,
+			width: 60,
+			height: 40
+		};
+		var topPipeBounds = {
+			x: pipe.x - 60,
+			y: 0,
+			width: 120,
+			height: pipe.topPipe.y
+		};
+		var bottomPipeBounds = {
+			x: pipe.x - 60,
+			y: pipe.bottomPipe.y,
+			width: 120,
+			height: 2732 - pipe.bottomPipe.y
+		};
+		// Check collision with pipes
+		if (birdBounds.x < topPipeBounds.x + topPipeBounds.width && birdBounds.x + birdBounds.width > topPipeBounds.x && birdBounds.y < topPipeBounds.y + topPipeBounds.height && birdBounds.y + birdBounds.height > topPipeBounds.y) {
+			LK.getSound('hit').play();
+			LK.effects.flashScreen(0xff0000, 500);
+			LK.showGameOver();
+			return;
+		}
+		if (birdBounds.x < bottomPipeBounds.x + bottomPipeBounds.width && birdBounds.x + birdBounds.width > bottomPipeBounds.x && birdBounds.y < bottomPipeBounds.y + bottomPipeBounds.height && birdBounds.y + birdBounds.height > bottomPipeBounds.y) {
+			LK.getSound('hit').play();
+			LK.effects.flashScreen(0xff0000, 500);
+			LK.showGameOver();
+			return;
+		}
+		pipe.lastX = pipe.x;
+	}
+	// Check ground collision
+	if (bird.y + 20 >= ground.y) {
+		LK.getSound('hit').play();
+		LK.effects.flashScreen(0xff0000, 500);
+		LK.showGameOver();
+		return;
+	}
+	// Check ceiling collision
+	if (bird.y - 20 <= 0) {
+		LK.getSound('hit').play();
+		LK.effects.flashScreen(0xff0000, 500);
+		LK.showGameOver();
+		return;
+	}
+};
\ No newline at end of file