This is the chain reaction based game that combines table tennis, a marble run, and bowling into one. Its 114 pieces assemble like similar building kits, forming a series of ramps, drops, and turns as kids learn STEM concepts. Once assembled, it is activated by tossing a plastic table tennis ball into a funnel, which sends a marble down a vertical labyrinth, and targeting a series of three pins at the bottom. Crafted in Germany by a company that has been making construction sets for over 55 years. Includes one steel marble, one plastic table tennis ball, and step-by-step instructions. Ages 7 and up. (1 lbs.)