6 years & up. This is not your ordinary addition to the marble run family! Put the laws of motion to the test with this Mega Stunt set. The ingenious pieces interlock in endless configurations, while double-exit cubes keep you guessing on which way the marbles will go! Set includes: 108 cubes, 2 cascade stilts, 2 coaster tubes, 1 marble vortex, 1 pivot trampoline, 2 universal connectors, 30 steel marbles, and instructions.