With Ravensburger GraviTrax The Game Impact, you will experience an exciting combination of marble run and logic puzzle. This Limited Edition contains 30 versatile challenges as well as 5 additional tasks that require creative thinking. The goal is to build a working marble run using the included 27 building blocks and the Hammer action tile to transport the red marble to the finish line. The interactive system playfully teaches physical laws such as gravity and marble behavior. The set is ideal as an expansion or a standalone puzzle game for all marble run fans.