Gravitrax Marble Run Extension Build

Ravensburger's interactive ball track system.

Create even more different ball runs! With this set, you can expand your ball run from the Starter Set even further. Simply combine the extra floor plates and other building pieces and see how complex your ball run can be! How many detours will your ball take to reach the finish line?
With numerous expansion sets like this Building Set, free-building and constructing the interactive GraviTrax ball track system becomes even more interesting and exciting every time! More possibilities - more fun! Learn more at www.gravitrax.com