With the GraviTrax interactive track system, you can design and build your own race tracks, and experiment with gravity, magnetism and kinetics to propel your marble to the finish. The open-ended building concept offers endless possibilities, to design a different track every time you play. Add speed and flair to your tracks with expansion sets and action accessories for endless hours of fun both young and old will enjoy!
Use the Tunnel accessories to hide the marbles as they travel through your track. Combine them with your GraviTrax Starter-Set for added mystery to your track.