You haven’t seen a marble run like this before, and that’s because with the Q-Ba-Maze 2.0 the possibilities are endless! This unique system of interlocking cubes can create mazes in the shape of animals, geometric shapes or anything you can think up. Each creation is a work of art that demonstrates the laws of probability and physics. Includes 72 cubes in 5 colors and 20 steel balls. Ages 5+.