Used only about twice. There are no injuries or damage whatsoever. I can provide more photos if requested. About Gravitrax: GraviTrax lets you build your own original courses using gravity, magnetism, and kinetic energy to send a ball rolling to the finish line. Create action-packed courses with various tiles, transparent plates, and tracks, and control the speed of the ball! The concept of freely designing allows you to create different courses every time you play, and the possibilities are endless. You can also add speed and functions by using expansion sets and additional parts. Challenge yourself to create your own original course. - Product Name: GraviTrax Starter Set - Age Range: 8-99 years old - Number of Components: Over 100 - Accessories: Assembly instructions Thank you for viewing. Type... LEGO Type... Blocks