$30 · GraviTrax - Interactive Marble Run System

GraviTrax Starter Kit - excellent condition. Introducing GraviTrax, an exciting and engaging marble run system designed to ignite your imagination. 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 gravity sphere to the finish. With a variety of tiles, levels, tracks and features you can control the speed of each gravity sphere. The open-ended building concept offers endless possibilities to design a different track every time you play.