The Gravitrax Start Set is required to play with this set
The tunnel extension kit adds stealth and surprise with 18 new elements. Use straight, curved and vertical tunnels to hide your flying marbles on your tracks.
Test the new Bernoulli and o-tracks to see how fast you can generate and where you can drop the ball to a lower level. Combine with the GraviTrax Starter Set® and experiment with different elements to see how long you can roll the marbles. GraviTrax is a modular, electronically free interactive track system where you can design and build your own ball paths.
This STEM toy for boys and girls 8 years and older encourages the experimentation of gravity, magnetism and kinetics to propel your ball to the finish. Designed from an open game perspective, the concept offers endless possibilities to design a different track every time you play.
Expand your constructions and add action with a variety of expansion games and accessories.
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