Q-BA-MAZE Stacking Cubes with Marble Run: 50-pack Cool Colors The Q-BA-MAZE 50-pack is an amazingly versatile sculpture/toy/game designed for playroom and coffee table fun! Everyones an inventor with Q-BA-MAZE  builders of all ages imagine and build in 3D with colors and cantilevers. Build intuitively or follow online architectural plans. Its both right-brain and left-brain; part art, part science. Play and invent! Great and fun construction toy. Ages 5 & up.