GraviTrax is the all new STEM track system from Ravensburger! Think of it as a next-generation marble maze for older players/builders. Use your imagination to build superb tracks and set the Gravity Spheres rolling! Start with the GraviTrax Starter Set (sold separately), then add one or more expansions like this one to increase complexity and play value.
The Transfer takes your marbles over a breath-taking gap for a spectacular eye-catcher! Get your marbles across longer distances. How far will your marbles travel?