Perplexus Maze Ball

3D puzzle game. My 12 year old loves this. He literally plays for hours and makes up his own rules. Great toy to bring anywhere. Fun for kids and adults. Used, but my son wants to make some money. No box. From website : The Perplexus Original Maze Game is a clear sphere filled with multicolored pathways covering different areas of the sphere's interior. A small metal ball rolls around on the inside, and it's your job to guide that ball through the maze to its end. Once the ball is balanced in its starting position, it's easy to start rolling it around the tracks. By the time you've learned the different passageways, you'll realize that even though it's easy to play, all the different ways of moving around are hard to master!