===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,261 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Bird class
+var Bird = Container.expand(function () {
+	var self = Container.call(this);
+	var birdSprite = self.attachAsset('bird', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocityY = 0;
+	self.gravity = 1.6; // Gravity per frame
+	self.flapStrength = -32; // Negative for upward movement
+	// Flap method
+	self.flap = function () {
+		self.velocityY = self.flapStrength;
+		// Animate a quick upward tilt
+		tween.stop(birdSprite, {
+			rotation: true
+		});
+		birdSprite.rotation = -0.35;
+		tween(birdSprite, {
+			rotation: 0.25
+		}, {
+			duration: 400,
+			easing: tween.easeOut
+		});
+	};
+	// Update method
+	self.update = function () {
+		self.velocityY += self.gravity;
+		self.y += self.velocityY;
+		// Clamp rotation based on velocity
+		if (self.velocityY > 0) {
+			birdSprite.rotation = Math.min(0.25, birdSprite.rotation + 0.02);
+		}
+	};
+	return self;
+});
+// Ground class
+var Ground = Container.expand(function () {
+	var self = Container.call(this);
+	var groundSprite = self.attachAsset('ground', {
+		anchorX: 0,
+		anchorY: 0
+	});
+	return self;
+});
+// PipePair class (upper and lower pipes)
+var PipePair = Container.expand(function () {
+	var self = Container.call(this);
+	// Pipe gap size
+	self.gap = 420;
+	// Pipe speed
+	self.speed = 14;
+	// Create upper pipe
+	self.upperPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	// Create lower pipe
+	self.lowerPipe = self.attachAsset('pipe', {
+		anchorX: 0.5,
+		anchorY: 0.0
+	});
+	// Set pipes' positions based on gapY
+	self.setGapY = function (gapY) {
+		self.upperPipe.x = 0;
+		self.upperPipe.y = gapY - self.gap / 2;
+		self.lowerPipe.x = 0;
+		self.lowerPipe.y = gapY + self.gap / 2;
+	};
+	// Update method
+	self.update = function () {
+		self.x -= self.speed;
+	};
+	// Helper for collision
+	self.getUpperPipe = function () {
+		return self.upperPipe;
+	};
+	self.getLowerPipe = function () {
+		return self.lowerPipe;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87ceeb // Sky blue
+});
+
+/**** 
+* Game Code
+****/ 
+// Ground
+// Pipe (upper and lower)
+// Bird (player)
+// Game constants
+var BIRD_START_X = 600;
+var BIRD_START_Y = 1100;
+var PIPE_INTERVAL = 90; // Frames between pipes
+var PIPE_MIN_Y = 500;
+var PIPE_MAX_Y = 2000;
+var GROUND_Y = 2732 - 120;
+// Game state
+var bird;
+var pipes = [];
+var ground;
+var score = 0;
+var scoreTxt;
+var gameStarted = false;
+var gameOver = false;
+var lastPipeFrame = 0;
+// Score display
+scoreTxt = new Text2('0', {
+	size: 180,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Add ground
+ground = new Ground();
+ground.x = 0;
+ground.y = GROUND_Y;
+game.addChild(ground);
+// Add bird
+bird = new Bird();
+bird.x = BIRD_START_X;
+bird.y = BIRD_START_Y;
+game.addChild(bird);
+// Reset function
+function resetGame() {
+	// Remove pipes
+	for (var i = 0; i < pipes.length; i++) {
+		pipes[i].destroy();
+	}
+	pipes = [];
+	// Reset bird
+	bird.x = BIRD_START_X;
+	bird.y = BIRD_START_Y;
+	bird.velocityY = 0;
+	// Reset score
+	score = 0;
+	scoreTxt.setText(score);
+	// Reset state
+	gameStarted = false;
+	gameOver = false;
+	lastPipeFrame = LK.ticks;
+}
+// Start game on first tap
+game.down = function (x, y, obj) {
+	if (gameOver) return;
+	if (!gameStarted) {
+		gameStarted = true;
+		bird.flap();
+		return;
+	}
+	bird.flap();
+};
+// Main update loop
+game.update = function () {
+	if (gameOver) return;
+	// Bird physics
+	if (gameStarted) {
+		bird.update();
+	}
+	// Add pipes
+	if (gameStarted && LK.ticks - lastPipeFrame >= PIPE_INTERVAL) {
+		var gapY = PIPE_MIN_Y + Math.floor(Math.random() * (PIPE_MAX_Y - PIPE_MIN_Y));
+		var pipePair = new PipePair();
+		pipePair.x = 2048 + 200; // Start just off right edge
+		pipePair.setGapY(gapY);
+		pipes.push(pipePair);
+		game.addChild(pipePair);
+		lastPipeFrame = LK.ticks;
+	}
+	// Update pipes and check for collisions
+	for (var i = pipes.length - 1; i >= 0; i--) {
+		var pipePair = pipes[i];
+		pipePair.update();
+		// Remove pipes that have gone off screen
+		if (pipePair.x < -300) {
+			pipePair.destroy();
+			pipes.splice(i, 1);
+			continue;
+		}
+		// Only check collision if game is started
+		if (gameStarted) {
+			// Check collision with upper pipe
+			var upperPipe = pipePair.getUpperPipe();
+			var lowerPipe = pipePair.getLowerPipe();
+			// Convert pipe positions to world
+			var pipeGlobalX = pipePair.x;
+			var upperPipeGlobalY = pipePair.y + upperPipe.y;
+			var lowerPipeGlobalY = pipePair.y + lowerPipe.y;
+			// Bird bounding box
+			var birdLeft = bird.x - 60;
+			var birdRight = bird.x + 60;
+			var birdTop = bird.y - 45;
+			var birdBottom = bird.y + 45;
+			// Upper pipe bounding box
+			var upperPipeLeft = pipeGlobalX - 100;
+			var upperPipeRight = pipeGlobalX + 100;
+			var upperPipeTop = upperPipeGlobalY - 900;
+			var upperPipeBottom = upperPipeGlobalY;
+			// Lower pipe bounding box
+			var lowerPipeLeft = pipeGlobalX - 100;
+			var lowerPipeRight = pipeGlobalX + 100;
+			var lowerPipeTop = lowerPipeGlobalY;
+			var lowerPipeBottom = lowerPipeGlobalY + 900;
+			// Collision with upper pipe
+			if (birdRight > upperPipeLeft && birdLeft < upperPipeRight && birdTop < upperPipeBottom && birdBottom > upperPipeTop) {
+				endGame();
+				return;
+			}
+			// Collision with lower pipe
+			if (birdRight > lowerPipeLeft && birdLeft < lowerPipeRight && birdBottom > lowerPipeTop && birdTop < lowerPipeBottom) {
+				endGame();
+				return;
+			}
+			// Score: when bird passes the center of the pipe
+			if (!pipePair.passed && pipePair.x + 100 < bird.x) {
+				pipePair.passed = true;
+				score += 1;
+				scoreTxt.setText(score);
+			}
+		}
+	}
+	// Collision with ground
+	if (bird.y + 45 >= GROUND_Y) {
+		endGame();
+		return;
+	}
+	// Collision with ceiling
+	if (bird.y - 45 <= 0) {
+		endGame();
+		return;
+	}
+};
+// End game
+function endGame() {
+	if (gameOver) return;
+	gameOver = true;
+	// Flash screen red
+	LK.effects.flashScreen(0xff0000, 800);
+	// Show game over (auto resets game)
+	LK.showGameOver();
+}
+// Reset game on game over (handled by LK, but for safety)
+game.onGameOver = function () {
+	resetGame();
+};
+// Initial reset
+resetGame();
\ No newline at end of file