Q-BA-MAZE is a unique system of colorful cubes that interlock to form an exciting marble run. The big difference? The configurations are UNLIMITED: create runs shaped like rockets, robots, butterflies, or whatever design you want! This kit includes: The Q-BA-MAZE Rails Builder Set with 10 straight-away rails that connect easily to any cube or to each other to create tracks that send your marbles zigzagging through the maze! With 40 single-exit cubes, 20 bottom-exit cubes, 20 double-exit cubes, 4 marble catchers and 20 marbles, the possibilities are endless. Encourages imaginative thinking, STEAM skills and cooperative play.