Put the laws of motion to the test with our patented Q-BA-MAZE 2.0 Stunt Sets. The ingenious pieces interlock in endless configurations, while double-exit cubes keep you guessing which way the marbles will go. Experiment to see what kind of zany, zigzagging action is possible! Includes 108 cubes, 2 Cascade Stilts, 2 Coaster Tubes, 1 Marble Vortex, 1 Pivot Trampoline, 30 steel marbles and color instructions. Cubes and Stunts are made from phthalate-free and BPA-free ABS plastic.