Q-Ba-Maze 20 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 It&39;s a live demonstration of probability physics and art all in one! Big Box includes 72 cubes in five different colors and 20 steel balls Q-Ba-Maze 20 cubes are not compatible with original Q-Ba-Maze cubes Every dinosaur robot flower fish sun or tower is a working marble maze Inspire creative play by building the amazing marble run sculptures in the idea book or make up your own The Big Box set includes high-quality red yellow green blue and clear blocksWorking maze of marblesConnect and form mazesYou never know which way the marble will goContains 72 cubes and 20 steel balls