===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,258 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Obstacle class
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obsAsset = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Speed will be set on creation
+	self.speed = 0;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Point collectible class
+var PointCollectible = Container.expand(function () {
+	var self = Container.call(this);
+	var pointAsset = self.attachAsset('point', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Speed will be set on creation
+	self.speed = 0;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Runner class
+var Runner = Container.expand(function () {
+	var self = Container.call(this);
+	var runnerAsset = self.attachAsset('runner', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// For swipe movement
+	self.targetX = self.x;
+	self.targetY = self.y;
+	// For collision flash
+	self.flash = function () {
+		tween(self, {
+			alpha: 0.3
+		}, {
+			duration: 80,
+			onFinish: function onFinish() {
+				tween(self, {
+					alpha: 1
+				}, {
+					duration: 120
+				});
+			}
+		});
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0xf0f0f0
+});
+
+/**** 
+* Game Code
+****/ 
+// Point collectible: a yellow box
+// Obstacle: a red ellipse
+// Runner character: a colorful box
+// Game area dimensions
+var GAME_WIDTH = 2048;
+var GAME_HEIGHT = 2732;
+// Runner start position
+var runnerStartX = GAME_WIDTH / 2;
+var runnerStartY = GAME_HEIGHT - 400;
+// Create runner
+var runner = new Runner();
+runner.x = runnerStartX;
+runner.y = runnerStartY;
+runner.targetX = runner.x;
+runner.targetY = runner.y;
+game.addChild(runner);
+// Score
+var score = 0;
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0x222222
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Arrays for obstacles and points
+var obstacles = [];
+var points = [];
+// Difficulty progression
+var baseSpeed = 14;
+var speedIncrease = 0.012; // per tick
+var spawnInterval = 60; // ticks between spawns
+var minSpawnInterval = 24;
+var tickCount = 0;
+// Swipe handling
+var swipeStartX = null;
+var swipeStartY = null;
+var isSwiping = false;
+// Helper: clamp value
+function clamp(val, min, max) {
+	return Math.max(min, Math.min(max, val));
+}
+// Touch/drag events for swipe
+game.down = function (x, y, obj) {
+	// Only start swipe if touch is not in top left 100x100
+	if (x < 100 && y < 100) return;
+	swipeStartX = x;
+	swipeStartY = y;
+	isSwiping = true;
+};
+game.move = function (x, y, obj) {
+	if (!isSwiping) return;
+	// Calculate swipe delta
+	var dx = x - swipeStartX;
+	var dy = y - swipeStartY;
+	// Only consider horizontal swipes (ignore vertical for runner movement)
+	// Move runner to new x, but clamp to screen
+	var newX = clamp(runner.x + dx, 100 + runner.width / 2, GAME_WIDTH - runner.width / 2 - 100);
+	// Optionally, allow a little vertical movement for fun
+	var newY = clamp(runner.y + dy, runnerStartY - 200, runnerStartY + 200);
+	// Tween to new position for smoothness
+	tween.stop(runner, {
+		x: true,
+		y: true
+	});
+	tween(runner, {
+		x: newX,
+		y: newY
+	}, {
+		duration: 120,
+		easing: tween.cubicOut
+	});
+	// Update swipe start for continuous drag
+	swipeStartX = x;
+	swipeStartY = y;
+};
+game.up = function (x, y, obj) {
+	isSwiping = false;
+	swipeStartX = null;
+	swipeStartY = null;
+	// Optionally, snap runner back to base Y
+	tween(runner, {
+		y: runnerStartY
+	}, {
+		duration: 180,
+		easing: tween.cubicOut
+	});
+};
+// Main game update loop
+game.update = function () {
+	tickCount++;
+	// Increase speed over time
+	var currentSpeed = baseSpeed + speedIncrease * tickCount;
+	// Spawn obstacles and points
+	if (tickCount % spawnInterval === 0) {
+		// Randomly decide: obstacle or point (70% obstacle, 30% point)
+		var spawnType = Math.random() < 0.7 ? 'obstacle' : 'point';
+		var laneCount = 5;
+		var laneWidth = (GAME_WIDTH - 400) / laneCount;
+		var lane = Math.floor(Math.random() * laneCount);
+		var spawnX = 200 + laneWidth / 2 + lane * laneWidth;
+		var spawnY = -120;
+		if (spawnType === 'obstacle') {
+			var obs = new Obstacle();
+			obs.x = spawnX;
+			obs.y = spawnY;
+			obs.speed = currentSpeed;
+			obstacles.push(obs);
+			game.addChild(obs);
+		} else {
+			var pt = new PointCollectible();
+			pt.x = spawnX;
+			pt.y = spawnY;
+			pt.speed = currentSpeed;
+			points.push(pt);
+			game.addChild(pt);
+		}
+		// Gradually decrease spawn interval to increase difficulty
+		if (spawnInterval > minSpawnInterval && tickCount % 600 === 0) {
+			spawnInterval -= 4;
+			if (spawnInterval < minSpawnInterval) spawnInterval = minSpawnInterval;
+		}
+	}
+	// Update obstacles
+	for (var i = obstacles.length - 1; i >= 0; i--) {
+		var obs = obstacles[i];
+		obs.update();
+		// Remove if off screen
+		if (obs.y - obs.height / 2 > GAME_HEIGHT + 100) {
+			obs.destroy();
+			obstacles.splice(i, 1);
+			continue;
+		}
+		// Collision with runner
+		if (obs.intersects(runner)) {
+			// Flash runner
+			runner.flash();
+			// Flash screen
+			LK.effects.flashScreen(0xff3b30, 600);
+			// Game over
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Update points
+	for (var j = points.length - 1; j >= 0; j--) {
+		var pt = points[j];
+		pt.update();
+		// Remove if off screen
+		if (pt.y - pt.height / 2 > GAME_HEIGHT + 100) {
+			pt.destroy();
+			points.splice(j, 1);
+			continue;
+		}
+		// Collectible collision
+		if (pt.intersects(runner)) {
+			// Add score
+			score += 1;
+			LK.setScore(score);
+			scoreTxt.setText(score);
+			// Flash runner yellow
+			tween.stop(runner, {
+				tint: true
+			});
+			tween(runner, {
+				tint: 0xffe156
+			}, {
+				duration: 80,
+				onFinish: function onFinish() {
+					tween(runner, {
+						tint: 0x2d9cff
+					}, {
+						duration: 120
+					});
+				}
+			});
+			pt.destroy();
+			points.splice(j, 1);
+			continue;
+		}
+	}
+};
+// Center score text at top, avoid top left 100x100
+scoreTxt.x = 1024;
+scoreTxt.y = 40;
\ No newline at end of file