===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,263 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var BeatIndicator = Container.expand(function () {
+	var self = Container.call(this);
+	var indicatorGraphics = self.attachAsset('beatIndicator', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.maxScale = 1.5;
+	self.minScale = 0.8;
+	self.pulse = function () {
+		indicatorGraphics.scaleX = self.maxScale;
+		indicatorGraphics.scaleY = self.maxScale;
+		tween(indicatorGraphics, {
+			scaleX: self.minScale,
+			scaleY: self.minScale
+		}, {
+			duration: 200,
+			easing: tween.easeOut
+		});
+	};
+	return self;
+});
+var Bubble = Container.expand(function () {
+	var self = Container.call(this);
+	var bubbleGraphics = self.attachAsset('bubble', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -2;
+	self.floatSpeed = -1;
+	self.update = function () {
+		self.x += self.speed;
+		self.y += self.floatSpeed;
+		bubbleGraphics.alpha = Math.max(0, bubbleGraphics.alpha - 0.005);
+		if (bubbleGraphics.alpha <= 0) {
+			self.destroy();
+		}
+	};
+	return self;
+});
+var Fish = Container.expand(function () {
+	var self = Container.call(this);
+	var fishGraphics = self.attachAsset('fish', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocity = 0;
+	self.gravity = 0.8;
+	self.bounceForce = -15;
+	self.isAlive = true;
+	self.bounce = function () {
+		if (self.isAlive) {
+			self.velocity = self.bounceForce;
+			LK.getSound('bounce').play();
+			// Add bounce animation
+			tween(fishGraphics, {
+				rotation: -0.3
+			}, {
+				duration: 150
+			});
+			tween(fishGraphics, {
+				rotation: 0
+			}, {
+				duration: 150,
+				delay: 150
+			});
+		}
+	};
+	self.update = function () {
+		if (self.isAlive) {
+			self.velocity += self.gravity;
+			self.y += self.velocity;
+			// Boundary checking
+			if (self.y < 100) {
+				self.y = 100;
+				self.velocity = 0;
+			}
+			if (self.y > 2632) {
+				self.y = 2632;
+				self.velocity = 0;
+			}
+			// Rotation based on velocity
+			fishGraphics.rotation = Math.min(Math.max(self.velocity * 0.03, -0.5), 0.5);
+		}
+	};
+	return self;
+});
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obstacleGraphics = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -8;
+	self.passed = false;
+	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: 0x001122
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var fish;
+var obstacles = [];
+var bubbles = [];
+var beatIndicator;
+var scoreTxt;
+var multiplierTxt;
+var gameSpeed = 1;
+var beatTimer = 0;
+var beatInterval = 60; // 60 ticks = 1 second at 60fps
+var lastBeatTime = 0;
+var scoreMultiplier = 1;
+var distanceScore = 0;
+var perfectBeatWindow = 10; // ticks
+var gameStarted = false;
+// Initialize UI
+scoreTxt = new Text2('0', {
+	size: 100,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+multiplierTxt = new Text2('x1', {
+	size: 60,
+	fill: 0xFFFF00
+});
+multiplierTxt.anchor.set(1, 0);
+LK.gui.topRight.addChild(multiplierTxt);
+// Initialize fish
+fish = game.addChild(new Fish());
+fish.x = 400;
+fish.y = 1366;
+// Initialize beat indicator
+beatIndicator = game.addChild(new BeatIndicator());
+beatIndicator.x = 200;
+beatIndicator.y = 200;
+// Start background music
+LK.playMusic('bgmusic');
+// Spawn obstacle function
+function spawnObstacle() {
+	var obstacle = new Obstacle();
+	obstacle.x = 2200;
+	// Random height with gaps
+	var gapSize = 400;
+	var gapCenter = 600 + Math.random() * 1500;
+	// Create top obstacle
+	var topObstacle = game.addChild(new Obstacle());
+	topObstacle.x = 2200;
+	topObstacle.y = gapCenter - gapSize / 2 - 100;
+	obstacles.push(topObstacle);
+	// Create bottom obstacle
+	var bottomObstacle = game.addChild(new Obstacle());
+	bottomObstacle.x = 2200;
+	bottomObstacle.y = gapCenter + gapSize / 2 + 100;
+	obstacles.push(bottomObstacle);
+}
+// Spawn bubble function
+function spawnBubble() {
+	var bubble = game.addChild(new Bubble());
+	bubble.x = 2100 + Math.random() * 200;
+	bubble.y = 500 + Math.random() * 1500;
+	bubbles.push(bubble);
+}
+// Handle tap input
+game.down = function (x, y, obj) {
+	if (!gameStarted) {
+		gameStarted = true;
+		return;
+	}
+	// Check if tap is in sync with beat
+	var timeSinceBeat = Math.abs(beatTimer - lastBeatTime);
+	if (timeSinceBeat <= perfectBeatWindow) {
+		scoreMultiplier = Math.min(scoreMultiplier + 0.5, 5);
+		LK.effects.flashObject(beatIndicator, 0x00ff00, 300);
+	} else {
+		scoreMultiplier = Math.max(scoreMultiplier - 0.2, 1);
+	}
+	fish.bounce();
+	multiplierTxt.setText('x' + scoreMultiplier.toFixed(1));
+};
+// Main game loop
+game.update = function () {
+	if (!gameStarted) return;
+	beatTimer++;
+	// Beat detection and obstacle spawning
+	if (beatTimer % beatInterval === 0) {
+		lastBeatTime = beatTimer;
+		beatIndicator.pulse();
+		// Spawn obstacles on beat
+		if (Math.random() < 0.7) {
+			spawnObstacle();
+		}
+		// Increase tempo gradually
+		if (beatInterval > 30) {
+			beatInterval -= 0.1;
+		}
+	}
+	// Spawn bubbles randomly
+	if (Math.random() < 0.03) {
+		spawnBubble();
+	}
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obstacle = obstacles[i];
+		// Check collision
+		if (fish.intersects(obstacle) && fish.isAlive) {
+			fish.isAlive = false;
+			LK.getSound('hit').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+		// Remove off-screen obstacles and award points
+		if (obstacle.x < -100) {
+			if (!obstacle.passed) {
+				obstacle.passed = true;
+				distanceScore += 10 * scoreMultiplier;
+				LK.setScore(Math.floor(distanceScore));
+				scoreTxt.setText(LK.getScore());
+			}
+			obstacle.destroy();
+			obstacles.splice(i, 1);
+		}
+	}
+	// Update bubbles
+	for (var j = bubbles.length - 1; j >= 0; j--) {
+		var bubble = bubbles[j];
+		if (bubble.x < -50 || bubble.y < -50) {
+			bubble.destroy();
+			bubbles.splice(j, 1);
+		}
+	}
+	// Continuous distance scoring
+	if (LK.ticks % 10 === 0) {
+		distanceScore += 1 * scoreMultiplier;
+		LK.setScore(Math.floor(distanceScore));
+		scoreTxt.setText(LK.getScore());
+	}
+	// Check if fish goes off screen
+	if (fish.y > 2732 || fish.y < 0) {
+		fish.isAlive = false;
+		LK.effects.flashScreen(0xff0000, 1000);
+		LK.showGameOver();
+	}
+};
\ No newline at end of file