===================================================================
--- original.js
+++ change.js
@@ -1111,12 +1111,10 @@
 			powerups.splice(i, 1);
 		}
 	}
 	for (var i = obstacles.length - 1; i >= 0; i--) {
-		if (obstacles[i]) {
-			obstacles[i].y += gameSpeed;
-			obstacles[i].update();
-		}
+		obstacles[i].y += gameSpeed;
+		obstacles[i].update();
 		if (!player.isJumping && player.hitbox && player.hitbox.some(function (hitbox) {
 			return hitbox.intersects(obstacles[i]) && obstacles[i].hitbox !== null;
 		})) {
 			if (player.isInvulnerable) {
@@ -1283,13 +1281,20 @@
 	smallObstacleLeft.x = lanes[0]; // Left lane
 	smallObstacleMiddle.x = lanes[1]; // Middle lane
 	coinRight.x = lanes[2]; // Right lane
 	smallObstacleLeft.y = smallObstacleMiddle.y = coinRight.y = -smallObstacleLeft.height * 2;
-	obstacles = obstacles || [];
-	coins = coins || [];
-	obstacles.push(smallObstacleLeft, smallObstacleMiddle);
+	if (!obstacles) {
+		obstacles = [];
+	}
+	if (!coins) {
+		coins = [];
+	}
+	obstacles.push(smallObstacleLeft);
+	obstacles.push(smallObstacleMiddle);
 	coins.push(coinRight);
-	game.addChild(smallObstacleLeft, smallObstacleMiddle, coinRight);
+	game.addChild(smallObstacleLeft);
+	game.addChild(smallObstacleMiddle);
+	game.addChild(coinRight);
 	// Ensure both obstacles and coin have the same speed
 	var obstacleSpeed = gameSpeed;
 	smallObstacleLeft.speed = smallObstacleMiddle.speed = coinRight.speed = obstacleSpeed;
 	// Attach the obstacles together
@@ -1313,13 +1318,20 @@
 	smallObstacleRight.x = lanes[2]; // Right lane
 	smallObstacleCenter.x = lanes[1]; // Center lane
 	coinLeft.x = lanes[0]; // Left lane
 	smallObstacleRight.y = smallObstacleCenter.y = coinLeft.y = -smallObstacleRight.height * 2;
-	obstacles = obstacles || [];
-	coins = coins || [];
-	obstacles.push(smallObstacleRight, smallObstacleCenter);
+	if (!obstacles) {
+		obstacles = [];
+	}
+	if (!coins) {
+		coins = [];
+	}
+	obstacles.push(smallObstacleRight);
+	obstacles.push(smallObstacleCenter);
 	coins.push(coinLeft);
-	game.addChild(smallObstacleRight, smallObstacleCenter, coinLeft);
+	game.addChild(smallObstacleRight);
+	game.addChild(smallObstacleCenter);
+	game.addChild(coinLeft);
 	// Ensure both obstacles and coin have the same speed
 	var obstacleSpeed = gameSpeed;
 	smallObstacleRight.speed = smallObstacleCenter.speed = coinLeft.speed = obstacleSpeed;
 	// Attach the obstacles together
@@ -1352,33 +1364,43 @@
 	var smallObstacleCenter = new SmallObstacle();
 	smallObstacleCenter.x = lanes[1]; // Center lane
 	smallObstacleCenter.y = -smallObstacleCenter.height * 2;
 	smallObstacleCenter.speed = gameSpeed; // Ensure constant speed
-	obstacles = obstacles || [];
-	coins = coins || [];
-	powerups = powerups || [];
+	if (!obstacles) {
+		obstacles = [];
+	}
 	obstacles.push(smallObstacleCenter);
+	game.addChild(smallObstacleCenter);
 	var coinLeft = new Coin();
 	coinLeft.x = lanes[0]; // Left lane
 	coinLeft.y = -coinLeft.height * 2;
 	coinLeft.speed = gameSpeed; // Ensure constant speed
+	if (!coins) {
+		coins = [];
+	}
 	coins.push(coinLeft);
+	game.addChild(coinLeft);
 	var powerUpRight = new PowerUp();
 	powerUpRight.x = lanes[2]; // Right lane
 	powerUpRight.y = -powerUpRight.height * 2;
 	powerUpRight.speed = gameSpeed; // Ensure constant speed
+	if (!powerups) {
+		powerups = [];
+	}
 	powerups.push(powerUpRight);
-	game.addChild(smallObstacleCenter, coinLeft, powerUpRight);
+	game.addChild(powerUpRight);
 }
 // Function to spawn SmallObstacles on the sides and a Coin in the middle
 function spawnSmallObstaclesSidesCoinMiddle() {
 	var smallObstacleLeft = new SmallObstacle();
 	smallObstacleLeft.x = lanes[0]; // Left lane
 	smallObstacleLeft.y = -smallObstacleLeft.height * 2;
 	smallObstacleLeft.speed = gameSpeed; // Ensure constant speed
-	obstacles = obstacles || [];
-	coins = coins || [];
-	obstacles.push(smallObstacleLeft, smallObstacleRight);
+	if (!obstacles) {
+		obstacles = [];
+	}
+	obstacles.push(smallObstacleLeft);
+	game.addChild(smallObstacleLeft);
 	var smallObstacleRight = new SmallObstacle();
 	smallObstacleRight.x = lanes[2]; // Right lane
 	smallObstacleRight.y = -smallObstacleRight.height * 2;
 	smallObstacleRight.speed = gameSpeed; // Ensure constant speed
@@ -1387,33 +1409,43 @@
 	var coinMiddle = new Coin();
 	coinMiddle.x = lanes[1]; // Middle lane
 	coinMiddle.y = -coinMiddle.height * 2;
 	coinMiddle.speed = gameSpeed; // Ensure constant speed
+	if (!coins) {
+		coins = [];
+	}
 	coins.push(coinMiddle);
-	game.addChild(smallObstacleLeft, smallObstacleRight, coinMiddle);
+	game.addChild(coinMiddle);
 }
 // Function to spawn SmallObstacle in the center and Coins on the sides
 function spawnSmallObstacleCenterCoinSides() {
 	var smallObstacleCenter = new SmallObstacleCenterCoinSides();
 	smallObstacleCenter.x = lanes[1]; // Center lane
 	smallObstacleCenter.y = -smallObstacleCenter.height * 2;
 	smallObstacleCenter.speed = gameSpeed; // Ensure constant speed
-	obstacles = obstacles || [];
-	coins = coins || [];
+	if (!obstacles) {
+		obstacles = [];
+	}
 	obstacles.push(smallObstacleCenter);
-	coins.push(coinLeft, coinRight);
-	game.addChild(smallObstacleCenter, coinLeft, coinRight);
+	game.addChild(smallObstacleCenter);
 	var coinLeft = new Coin();
 	coinLeft.x = lanes[0]; // Left lane
 	coinLeft.y = -coinLeft.height * 2;
 	coinLeft.speed = gameSpeed; // Ensure constant speed
+	if (!coins) {
+		coins = [];
+	}
+	coins.push(coinLeft);
+	game.addChild(coinLeft);
 	var coinRight = new Coin();
 	coinRight.x = lanes[2]; // Right lane
 	coinRight.y = -coinRight.height * 2;
 	coinRight.speed = gameSpeed; // Ensure constant speed
+	coins.push(coinRight);
+	game.addChild(coinRight);
 }
 var starfield = [];
-for (var i = 0; i < 100; i++) {
+for (var i = 0; i < 50; i++) {
 	var star = new Star();
 	star.x = Math.random() * 2048;
 	star.y = Math.random() * 2732;
 	starfield.push(star);