Ravensburger GraviTrax PRO Starter Set [Imported] Purchased on Amazon and played with a few times with my child. The reviews mentioned it was like a "Pythagoras Switch" (a Japanese Rube Goldberg machine), which I thought we'd enjoy, but we don't play with it, so I'm selling it. Some parts are pre-assembled, but I will send them as is. Quantity: Confirmed that all parts are present Condition: There are some scratches on the back from when I made the hexagonal holes (photo 6). The instruction manual has some stains. Other parts are in good condition. Total number of pieces: 153 Retail price: 11,000 yen Product Description: "GraviTrax" is a system toy that allows you to build track models using the laws of gravity. You can create action-packed courses using the principles of gravity, magnetism, and dynamics, and make the ball run to the goal. The ways to play are endless by combining a variety of expansion sets and additional parts. "GarviTrax PRO" adds parts that easily create height to "GarviTrax," allowing you to create more varied courses. In addition to the courses described in the included example collection, you can also create your own original layouts. Through play, you can cultivate creativity, imagination, and thinking skills. Safety Information: Please let children play under the supervision of a guardian. Do not put small parts in your mouth. There is a risk of choking. Do not give it to children under 3 years old as there is a risk of accidental ingestion. Do not play roughly, such as throwing or swinging it around. Do not use if there are any dangerous parts such as damage or deformation. #Ravensburger #GraviTrax PRO #GraviTrax Pro