GraviTrax Extension Set Base Skytrax

Ravensburger's interactive marble run system. With the GraviTrax® marble run system, you can build your own marble run world by creatively using the laws of gravity. Use the various building blocks to create an action-packed track and utilize magnetism, kinetics, and gravity to get the marbles to the finish line.

The 85-piece 'Skytrax' expansion set can be combined with all Gravitrax sets.

The GraviTrax® marble run system lets you playfully guess gravity, and with various expansions, the system can be expanded for endless building and play fun! Add even more speed with the expansion sets.