===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,255 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var PerfectEffect = Container.expand(function (x, y) {
+	var self = Container.call(this);
+	var effectGraphics = self.attachAsset('perfectEffect', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.x = x;
+	self.y = y;
+	self.alpha = 1;
+	self.scale.set(0.5, 0.5);
+	tween(self, {
+		alpha: 0,
+		scaleX: 2,
+		scaleY: 2
+	}, {
+		duration: 500,
+		easing: tween.easeOut,
+		onFinish: function onFinish() {
+			self.destroy();
+			var index = perfectEffects.indexOf(self);
+			if (index > -1) {
+				perfectEffects.splice(index, 1);
+			}
+		}
+	});
+	return self;
+});
+var PianoKey = Container.expand(function (lane) {
+	var self = Container.call(this);
+	var keyGraphics = self.attachAsset('pianoKey', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.lane = lane;
+	self.pressed = false;
+	self.pressTimer = 0;
+	self.update = function () {
+		if (self.pressed) {
+			self.pressTimer--;
+			if (self.pressTimer <= 0) {
+				self.setUnpressed();
+			}
+		}
+	};
+	self.setPressed = function () {
+		if (!self.pressed) {
+			self.pressed = true;
+			self.pressTimer = 10;
+			keyGraphics.removeChild(keyGraphics.children[0]);
+			var pressedGraphics = keyGraphics.attachAsset('pianoKeyPressed', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		}
+	};
+	self.setUnpressed = function () {
+		if (self.pressed) {
+			self.pressed = false;
+			keyGraphics.removeChild(keyGraphics.children[0]);
+			var normalGraphics = keyGraphics.attachAsset('pianoKey', {
+				anchorX: 0.5,
+				anchorY: 0.5
+			});
+		}
+	};
+	self.down = function (x, y, obj) {
+		handleKeyPress(self.lane);
+	};
+	return self;
+});
+var PianoTile = Container.expand(function (lane, noteIndex) {
+	var self = Container.call(this);
+	var tileGraphics = self.attachAsset('pianoTile', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.lane = lane;
+	self.noteIndex = noteIndex;
+	self.speed = gameSpeed;
+	self.tapped = false;
+	self.lastY = self.y;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2c3e50
+});
+
+/**** 
+* Game Code
+****/ 
+var gameSpeed = 8;
+var speedIncrement = 0.5;
+var maxSpeed = 20;
+var combo = 0;
+var gameRunning = true;
+var spawnRate = 90;
+var spawnCounter = 0;
+var lanes = 4;
+var laneWidth = 400;
+var keyboardY = 2400;
+var hitZoneY = 2300;
+var hitZoneHeight = 200;
+var tiles = [];
+var pianoKeys = [];
+var perfectEffects = [];
+var notes = ['note1', 'note2', 'note3', 'note4'];
+// Create piano keyboard
+for (var i = 0; i < lanes; i++) {
+	var key = new PianoKey(i);
+	key.x = i * laneWidth + laneWidth / 2 + 224;
+	key.y = keyboardY;
+	pianoKeys.push(key);
+	game.addChild(key);
+}
+// Create score display
+var scoreText = new Text2('Score: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+// Create combo display
+var comboText = new Text2('', {
+	size: 60,
+	fill: 0xFFD700
+});
+comboText.anchor.set(0.5, 0);
+comboText.y = 100;
+LK.gui.top.addChild(comboText);
+function updateScore() {
+	scoreText.setText('Score: ' + LK.getScore());
+	if (combo > 5) {
+		comboText.setText('Combo: ' + combo);
+	} else {
+		comboText.setText('');
+	}
+}
+function spawnTile() {
+	if (!gameRunning) return;
+	var lane = Math.floor(Math.random() * lanes);
+	var tile = new PianoTile(lane, notes[lane]);
+	tile.x = lane * laneWidth + laneWidth / 2 + 224;
+	tile.y = -50;
+	tile.lastY = tile.y;
+	tiles.push(tile);
+	game.addChild(tile);
+}
+function handleKeyPress(lane) {
+	if (!gameRunning) return;
+	var hitTile = null;
+	var bestDistance = Infinity;
+	// Find the closest tile in the hit zone for this lane
+	for (var i = 0; i < tiles.length; i++) {
+		var tile = tiles[i];
+		if (tile.lane === lane && !tile.tapped) {
+			var distance = Math.abs(tile.y - hitZoneY);
+			if (distance < hitZoneHeight && distance < bestDistance) {
+				hitTile = tile;
+				bestDistance = distance;
+			}
+		}
+	}
+	if (hitTile) {
+		hitTile.tapped = true;
+		pianoKeys[lane].setPressed();
+		// Play note
+		LK.getSound(notes[lane]).play();
+		// Calculate score based on timing
+		var timingScore = Math.max(1, Math.floor((hitZoneHeight - bestDistance) / hitZoneHeight * 100));
+		LK.setScore(LK.getScore() + timingScore + combo * 2);
+		combo++;
+		// Perfect hit effect
+		if (bestDistance < 30) {
+			LK.getSound('perfect').play();
+			var effect = new PerfectEffect(hitTile.x, hitTile.y);
+			perfectEffects.push(effect);
+			game.addChild(effect);
+		}
+		// Increase speed gradually
+		if (gameSpeed < maxSpeed) {
+			gameSpeed += speedIncrement / 100;
+		}
+		updateScore();
+		// Flash tile before removing
+		tween(hitTile, {
+			alpha: 0
+		}, {
+			duration: 200,
+			onFinish: function onFinish() {
+				hitTile.destroy();
+				var index = tiles.indexOf(hitTile);
+				if (index > -1) {
+					tiles.splice(index, 1);
+				}
+			}
+		});
+	}
+}
+game.update = function () {
+	if (!gameRunning) return;
+	// Spawn tiles
+	spawnCounter++;
+	if (spawnCounter >= spawnRate) {
+		spawnTile();
+		spawnCounter = 0;
+		// Gradually increase spawn rate
+		if (spawnRate > 30) {
+			spawnRate = Math.max(30, spawnRate - 0.2);
+		}
+	}
+	// Update tiles and check for misses
+	for (var i = tiles.length - 1; i >= 0; i--) {
+		var tile = tiles[i];
+		// Check if tile passed the hit zone without being tapped
+		if (!tile.tapped && tile.lastY < hitZoneY + hitZoneHeight && tile.y >= hitZoneY + hitZoneHeight) {
+			// Missed tile - game over
+			LK.getSound('miss').play();
+			LK.effects.flashScreen(0xff0000, 1000);
+			gameRunning = false;
+			LK.setTimeout(function () {
+				LK.showGameOver();
+			}, 1000);
+			return;
+		}
+		// Remove tiles that are off screen
+		if (tile.y > 2800) {
+			tile.destroy();
+			tiles.splice(i, 1);
+			continue;
+		}
+		tile.lastY = tile.y;
+	}
+	// Check for winning condition (high score achievement)
+	if (LK.getScore() >= 5000) {
+		gameRunning = false;
+		LK.setTimeout(function () {
+			LK.showYouWin();
+		}, 500);
+	}
+};
\ No newline at end of file