===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,275 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var LongTile = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('longTile', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.lane = 0;
+	self.startHit = false;
+	self.holding = false;
+	self.completed = false;
+	self.missed = false;
+	self.holdStartY = 0;
+	self.activate = function () {
+		self.removeChild(graphics);
+		graphics = self.attachAsset('longTileActive', {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+	};
+	self.update = function () {
+		if (!self.holding) {
+			self.y += self.speed;
+		}
+		var tileBottom = self.y + 120;
+		var tileTop = self.y - 120;
+		// Check if we can start holding
+		if (tileBottom >= hitLineY - 30 && tileTop <= hitLineY + 30 && !self.startHit && !self.missed) {
+			if (activeLanes[self.lane]) {
+				self.startHit = true;
+				self.holding = true;
+				self.holdStartY = self.y;
+				self.activate();
+				LK.getSound('hold').play();
+			}
+		}
+		// Check if tile passed without being held
+		if (tileTop > hitLineY + 60 && !self.startHit && !self.missed) {
+			self.missed = true;
+			missedTiles++;
+			comboCount = 0;
+			LK.getSound('miss').play();
+			if (missedTiles >= maxMisses) {
+				LK.showGameOver();
+			}
+		}
+		// Check if holding is complete
+		if (self.holding && self.y >= self.holdStartY + 240) {
+			self.completed = true;
+			self.holding = false;
+			LK.setScore(LK.getScore() + 20);
+			comboCount++;
+			updateScoreDisplay();
+		}
+	};
+	return self;
+});
+var QuickTile = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('quickTile', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.lane = 0;
+	self.hit = false;
+	self.missed = false;
+	self.update = function () {
+		self.y += self.speed;
+		// Check if tile is past hit line and not hit
+		if (self.y > hitLineY + 60 && !self.hit && !self.missed) {
+			self.missed = true;
+			missedTiles++;
+			comboCount = 0;
+			LK.getSound('miss').play();
+			if (missedTiles >= maxMisses) {
+				LK.showGameOver();
+			}
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x1a1a1a
+});
+
+/**** 
+* Game Code
+****/ 
+var lanes = [];
+var hitLineY = 2200;
+var tiles = [];
+var activeLanes = [false, false, false, false];
+var comboCount = 0;
+var missedTiles = 0;
+var maxMisses = 5;
+var tileSpawnTimer = 0;
+var tileSpawnInterval = 60;
+var gameSpeed = 1;
+// Create lanes
+for (var i = 0; i < 4; i++) {
+	var lane = game.addChild(LK.getAsset('lane', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	}));
+	lane.x = 256 + i * 512;
+	lane.y = 1366;
+	lanes.push(lane);
+}
+// Create hit line
+var hitLine = game.addChild(LK.getAsset('hitLine', {
+	anchorX: 0.5,
+	anchorY: 0.5
+}));
+hitLine.x = 1024;
+hitLine.y = hitLineY;
+// Create UI
+var scoreText = new Text2('Score: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+var comboText = new Text2('Combo: 0', {
+	size: 60,
+	fill: 0xFFFF00
+});
+comboText.anchor.set(0.5, 0);
+comboText.y = 100;
+LK.gui.top.addChild(comboText);
+var missText = new Text2('Misses: 0/5', {
+	size: 50,
+	fill: 0xFF0000
+});
+missText.anchor.set(1, 0);
+LK.gui.topRight.addChild(missText);
+function updateScoreDisplay() {
+	scoreText.setText('Score: ' + LK.getScore());
+	comboText.setText('Combo: ' + comboCount);
+	missText.setText('Misses: ' + missedTiles + '/' + maxMisses);
+}
+function spawnTile() {
+	var laneIndex = Math.floor(Math.random() * 4);
+	var tileType = Math.random() < 0.7 ? 'quick' : 'long';
+	var tile;
+	if (tileType === 'quick') {
+		tile = new QuickTile();
+	} else {
+		tile = new LongTile();
+	}
+	tile.lane = laneIndex;
+	tile.x = 256 + laneIndex * 512;
+	tile.y = -100;
+	tiles.push(tile);
+	game.addChild(tile);
+}
+function getLaneFromX(x) {
+	if (x < 512) return 0;
+	if (x < 1024) return 1;
+	if (x < 1536) return 2;
+	return 3;
+}
+function activateLane(laneIndex) {
+	if (laneIndex >= 0 && laneIndex < 4) {
+		activeLanes[laneIndex] = true;
+		lanes[laneIndex].removeChild(lanes[laneIndex].children[0]);
+		var activeLane = LK.getAsset('laneActive', {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+		lanes[laneIndex].addChild(activeLane);
+	}
+}
+function deactivateLane(laneIndex) {
+	if (laneIndex >= 0 && laneIndex < 4) {
+		activeLanes[laneIndex] = false;
+		lanes[laneIndex].removeChild(lanes[laneIndex].children[0]);
+		var normalLane = LK.getAsset('lane', {
+			anchorX: 0.5,
+			anchorY: 0.5
+		});
+		lanes[laneIndex].addChild(normalLane);
+	}
+}
+game.down = function (x, y, obj) {
+	var laneIndex = getLaneFromX(x);
+	activateLane(laneIndex);
+	// Check for quick tile hits
+	for (var i = 0; i < tiles.length; i++) {
+		var tile = tiles[i];
+		if (tile instanceof QuickTile && tile.lane === laneIndex && !tile.hit && !tile.missed) {
+			var distance = Math.abs(tile.y - hitLineY);
+			if (distance <= 60) {
+				tile.hit = true;
+				LK.setScore(LK.getScore() + 10);
+				comboCount++;
+				LK.getSound('tap').play();
+				// Visual effect
+				tween(tile, {
+					alpha: 0,
+					scaleX: 1.5,
+					scaleY: 1.5
+				}, {
+					duration: 200,
+					onFinish: function onFinish() {
+						tile.destroy();
+					}
+				});
+				updateScoreDisplay();
+				break;
+			}
+		}
+	}
+};
+game.up = function (x, y, obj) {
+	var laneIndex = getLaneFromX(x);
+	deactivateLane(laneIndex);
+	// Stop holding long tiles
+	for (var i = 0; i < tiles.length; i++) {
+		var tile = tiles[i];
+		if (tile instanceof LongTile && tile.lane === laneIndex && tile.holding) {
+			tile.holding = false;
+			// If not completed, it's a miss
+			if (!tile.completed) {
+				tile.missed = true;
+				missedTiles++;
+				comboCount = 0;
+				LK.getSound('miss').play();
+				if (missedTiles >= maxMisses) {
+					LK.showGameOver();
+				}
+				updateScoreDisplay();
+			}
+		}
+	}
+};
+game.update = function () {
+	// Spawn tiles
+	tileSpawnTimer++;
+	if (tileSpawnTimer >= tileSpawnInterval) {
+		spawnTile();
+		tileSpawnTimer = 0;
+		// Increase difficulty over time
+		if (LK.ticks % 600 === 0) {
+			gameSpeed += 0.1;
+			tileSpawnInterval = Math.max(30, tileSpawnInterval - 2);
+		}
+	}
+	// Clean up tiles
+	for (var i = tiles.length - 1; i >= 0; i--) {
+		var tile = tiles[i];
+		if (tile.y > 2800 || tile.hit || tile.completed || tile.missed && tile.y > hitLineY + 200) {
+			if (!tile.destroyed) {
+				tile.destroy();
+				tiles.splice(i, 1);
+			}
+		}
+	}
+	// Update tile speeds based on game speed
+	for (var i = 0; i < tiles.length; i++) {
+		tiles[i].speed = 8 * gameSpeed;
+	}
+};
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