Q-Ba-Maze 2.0 is a unique system of colorful cubes that interlock to form a marble run. The big difference? You can create marble maze sculptures in the form of animals, geometric shapes or any other design! Configurations are unlimited, allowing for unpredictable action when steel balls travel the various routes. Its a live demonstration of probability, physics and art, all in one! This set of 3 contains 36 cubes in "warm" colors, 36 cubes in "cool" colors, 1 Speed Sprocket, 1 Roto Catcher and 38 steel marbles. Made from phthalate-free and BPA-free ABS plastic. Marbles are nickel plated steel balls. They are not magnets.