===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,190 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var HitEffect = Container.expand(function () {
+	var self = Container.call(this);
+	var effectGraphics = self.attachAsset('perfectHit', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.init = function (x, y) {
+		self.x = x;
+		self.y = y;
+		effectGraphics.alpha = 1;
+		effectGraphics.scale.x = 0.5;
+		effectGraphics.scale.y = 0.5;
+		tween.to(effectGraphics.scale, {
+			x: 1.5,
+			y: 1.5
+		}, 300);
+		tween.to(effectGraphics, {
+			alpha: 0
+		}, 300).onComplete(function () {
+			self.destroy();
+		});
+	};
+	return self;
+});
+var MusicNote = Container.expand(function () {
+	var self = Container.call(this);
+	var noteGraphics = self.attachAsset('musicNote', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.lane = 0;
+	self.isPerfect = false;
+	self.lastY = 0;
+	self.init = function (laneIndex) {
+		self.lane = laneIndex;
+		self.x = 256 + laneIndex * 512;
+		self.y = -100;
+		self.lastY = self.y;
+		// Random color for each note
+		var colors = [0xff1493, 0x00ff00, 0xffff00, 0xff4500];
+		noteGraphics.tint = colors[Math.floor(Math.random() * colors.length)];
+	};
+	self.update = function () {
+		self.lastY = self.y;
+		self.y += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
 	backgroundColor: 0x000000
-});
\ No newline at end of file
+});
+
+/**** 
+* Game Code
+****/ 
+game.setBackgroundColor(0x1a1a2e);
+var notes = [];
+var score = 0;
+var combo = 0;
+var maxCombo = 0;
+var hitZoneY = 2200;
+var noteSpawnTimer = 0;
+var gameStarted = false;
+// Create hit zone
+var hitZone = game.addChild(LK.getAsset('hitZone', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 1024,
+	y: hitZoneY,
+	alpha: 0.3
+}));
+// Score display
+var scoreTxt = new Text2('Score: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Combo display
+var comboTxt = new Text2('Combo: 0', {
+	size: 60,
+	fill: 0xFFFF00
+});
+comboTxt.anchor.set(0.5, 0);
+comboTxt.y = 100;
+LK.gui.top.addChild(comboTxt);
+// Instructions
+var instructionTxt = new Text2('Tap the notes when they reach the blue zone!', {
+	size: 50,
+	fill: 0xFFFFFF
+});
+instructionTxt.anchor.set(0.5, 0.5);
+LK.gui.center.addChild(instructionTxt);
+// Start game after 2 seconds
+LK.setTimeout(function () {
+	instructionTxt.visible = false;
+	gameStarted = true;
+	LK.playMusic('gameMusic');
+}, 2000);
+// Touch handler
+game.down = function (x, y, obj) {
+	if (!gameStarted) return;
+	// Determine which lane was tapped
+	var lane = Math.floor(x / 512);
+	if (lane > 3) lane = 3;
+	// Check for hit
+	var hitNote = false;
+	for (var i = notes.length - 1; i >= 0; i--) {
+		var note = notes[i];
+		if (note.lane === lane && Math.abs(note.y - hitZoneY) < 100) {
+			// Hit!
+			hitNote = true;
+			score += 100;
+			combo++;
+			if (combo > maxCombo) maxCombo = combo;
+			// Perfect hit bonus
+			if (Math.abs(note.y - hitZoneY) < 30) {
+				score += 50;
+				var effect = game.addChild(new HitEffect());
+				effect.init(note.x, note.y);
+			}
+			LK.getSound('hitSound').play();
+			// Flash the note before destroying
+			LK.effects.flashObject(note, 0xffffff, 200);
+			LK.setTimeout(function () {
+				note.destroy();
+			}, 200);
+			notes.splice(i, 1);
+			break;
+		}
+	}
+	if (!hitNote) {
+		// Miss!
+		combo = 0;
+		LK.getSound('missSound').play();
+		LK.effects.flashScreen(0xff0000, 200);
+	}
+	// Update UI
+	scoreTxt.setText('Score: ' + score);
+	comboTxt.setText('Combo: ' + combo);
+	// Win condition
+	if (score >= 5000) {
+		LK.showYouWin();
+	}
+};
+// Game update loop
+game.update = function () {
+	if (!gameStarted) return;
+	// Spawn notes
+	noteSpawnTimer++;
+	if (noteSpawnTimer > 45) {
+		noteSpawnTimer = 0;
+		var note = game.addChild(new MusicNote());
+		note.init(Math.floor(Math.random() * 4));
+		notes.push(note);
+	}
+	// Check for missed notes
+	for (var i = notes.length - 1; i >= 0; i--) {
+		var note = notes[i];
+		// Check if note passed the hit zone
+		if (note.lastY <= hitZoneY + 100 && note.y > hitZoneY + 100) {
+			// Missed!
+			combo = 0;
+			LK.getSound('missSound').play();
+			comboTxt.setText('Combo: ' + combo);
+		}
+		// Remove notes that are off screen
+		if (note.y > 2832) {
+			note.destroy();
+			notes.splice(i, 1);
+		}
+	}
+	// Game over if too many misses
+	if (notes.length > 10) {
+		LK.showGameOver();
+	}
+};
\ No newline at end of file