Unleash new energy! When a marble rolls into the volcano push button, it triggers an eruption that launches up to 3 marbles down the tracks. Includes 6 additional tracks. GraviTrax is a modular, electronics-free interactive track system where you can design and build your own marble runs. This STEM toy for boys and girls ages 8 and up encourages experimentation with gravity, magnetism and kinetics to propel your marble to the finish. Designed with open-ended play in mind, the concept offers endless possibilities to design a different track every time you play. Expand your builds and add more action with a variety of expansion sets and accessories.
