===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,253 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Note = Container.expand(function () {
+	var self = Container.call(this);
+	var noteGraphics = self.attachAsset('note', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.lane = 0;
+	self.isHit = false;
+	self.targetY = 2300;
+	self.update = function () {
+		if (!self.isHit) {
+			self.y += self.speed;
+		}
+	};
+	self.hit = function () {
+		self.isHit = true;
+		var hitEffect = game.addChild(LK.getAsset('hitEffect', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			x: self.x,
+			y: self.y,
+			alpha: 0.8
+		}));
+		tween(hitEffect, {
+			alpha: 0,
+			scaleX: 2,
+			scaleY: 2
+		}, {
+			duration: 300,
+			onFinish: function onFinish() {
+				hitEffect.destroy();
+			}
+		});
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x1a1a2e
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var notes = [];
+var lanes = [];
+var lanePositions = [400, 650, 900, 1150];
+var targetLineY = 2300;
+var health = 100;
+var combo = 0;
+var maxCombo = 0;
+var noteSpawnTimer = 0;
+var noteSpeed = 8;
+var gameSpeed = 1;
+// UI elements
+var scoreText = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0, 0);
+scoreText.x = 100;
+scoreText.y = 100;
+game.addChild(scoreText);
+var comboText = new Text2('Combo: 0', {
+	size: 50,
+	fill: 0xF1C40F
+});
+comboText.anchor.set(0, 0);
+comboText.x = 100;
+comboText.y = 180;
+game.addChild(comboText);
+var healthText = new Text2('Health: 100', {
+	size: 50,
+	fill: 0xE74C3C
+});
+healthText.anchor.set(1, 0);
+healthText.x = 1948;
+healthText.y = 100;
+game.addChild(healthText);
+var accuracyText = new Text2('', {
+	size: 80,
+	fill: 0x2ECC71
+});
+accuracyText.anchor.set(0.5, 0.5);
+accuracyText.x = 1024;
+accuracyText.y = 1366;
+game.addChild(accuracyText);
+// Create lanes
+for (var i = 0; i < 4; i++) {
+	var lane = game.addChild(LK.getAsset('lane', {
+		anchorX: 0.5,
+		anchorY: 0,
+		x: lanePositions[i],
+		y: 0,
+		alpha: 0.3
+	}));
+	lanes.push(lane);
+}
+// Create target line
+var targetLine = game.addChild(LK.getAsset('targetLine', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 1024,
+	y: targetLineY
+}));
+// Game functions
+function spawnNote() {
+	var note = new Note();
+	var randomLane = Math.floor(Math.random() * 4);
+	note.x = lanePositions[randomLane];
+	note.y = -50;
+	note.lane = randomLane;
+	note.speed = noteSpeed * gameSpeed;
+	notes.push(note);
+	game.addChild(note);
+}
+function checkNoteHit(x, y) {
+	var hitNote = null;
+	var bestDistance = Infinity;
+	var laneIndex = -1;
+	// Determine which lane was tapped
+	for (var i = 0; i < lanePositions.length; i++) {
+		if (Math.abs(x - lanePositions[i]) < 100) {
+			laneIndex = i;
+			break;
+		}
+	}
+	if (laneIndex === -1) return;
+	// Find the closest note in that lane near the target line
+	for (var i = 0; i < notes.length; i++) {
+		var note = notes[i];
+		if (note.lane === laneIndex && !note.isHit) {
+			var distance = Math.abs(note.y - targetLineY);
+			if (distance < bestDistance && distance < 150) {
+				bestDistance = distance;
+				hitNote = note;
+			}
+		}
+	}
+	if (hitNote) {
+		hitNote.hit();
+		var accuracy = '';
+		var points = 0;
+		if (bestDistance < 30) {
+			accuracy = 'PERFECT!';
+			points = 100;
+			combo++;
+		} else if (bestDistance < 80) {
+			accuracy = 'GOOD!';
+			points = 50;
+			combo++;
+		} else {
+			accuracy = 'OK';
+			points = 25;
+			combo++;
+		}
+		LK.setScore(LK.getScore() + points * Math.max(1, Math.floor(combo / 10)));
+		if (combo > maxCombo) {
+			maxCombo = combo;
+		}
+		// Show accuracy feedback
+		accuracyText.setText(accuracy);
+		accuracyText.alpha = 1;
+		tween(accuracyText, {
+			alpha: 0
+		}, {
+			duration: 800
+		});
+		LK.getSound('hitSound').play();
+		// Remove hit note
+		for (var j = notes.length - 1; j >= 0; j--) {
+			if (notes[j] === hitNote) {
+				notes.splice(j, 1);
+				break;
+			}
+		}
+		LK.setTimeout(function () {
+			hitNote.destroy();
+		}, 300);
+	}
+}
+function updateUI() {
+	scoreText.setText('Score: ' + LK.getScore());
+	comboText.setText('Combo: ' + combo);
+	healthText.setText('Health: ' + health);
+}
+// Event handlers
+game.down = function (x, y, obj) {
+	checkNoteHit(x, y);
+};
+// Main game loop
+game.update = function () {
+	// Spawn notes
+	noteSpawnTimer++;
+	if (noteSpawnTimer >= Math.max(30, 90 - Math.floor(LK.getScore() / 500))) {
+		spawnNote();
+		noteSpawnTimer = 0;
+	}
+	// Update game speed based on score
+	gameSpeed = 1 + LK.getScore() / 2000;
+	noteSpeed = 8 * gameSpeed;
+	// Check for missed notes and update notes
+	for (var i = notes.length - 1; i >= 0; i--) {
+		var note = notes[i];
+		// Check if note passed target line (missed)
+		if (!note.isHit && note.y > targetLineY + 200) {
+			health -= 10;
+			combo = 0;
+			accuracyText.setText('MISS!');
+			accuracyText.alpha = 1;
+			tween(accuracyText, {
+				alpha: 0
+			}, {
+				duration: 800
+			});
+			LK.getSound('missSound').play();
+			note.destroy();
+			notes.splice(i, 1);
+			continue;
+		}
+		// Remove notes that are off screen
+		if (note.y > 2800) {
+			note.destroy();
+			notes.splice(i, 1);
+		}
+	}
+	// Check game over condition
+	if (health <= 0) {
+		LK.stopMusic();
+		LK.showGameOver();
+	}
+	// Check win condition (high score achievement)
+	if (LK.getScore() >= 10000) {
+		LK.stopMusic();
+		LK.showYouWin();
+	}
+	updateUI();
+};
+// Start background music
+LK.playMusic('bgMusic');
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