Line climber offers 20 challenging levels, each with a different design for you to complete while trying to avoid both still and mobile obstacles. each level has 3 stars in them for you to collect to fully complete the level. move the ball with the arrow keys, but beware of the red-colored platforms. if you lose control and jump to the spiky walls, the ball will blow up and you'll lose the game. time your jump carefully and try to reach the finish line without touching any of the obstacles to complete the level.