COLORFUL CUBIC FUN - Experience the full spectrum of marble-run creativity! The Q-BA-MAZE is a unique system of interlocking colorful cubes for a fascinating new marble-run toy. The configurations are UNLIMITED and the rainbow-hued colors are BOLD and BRIGHT, offering your child a challenging and mesmerizing experience that's as beneficial as it is fun.;FOR YOUR LITTLE ENGINEER - Encouraging fine motor skills, logic, creativity, and an interest in physics and art, this set includes double-exit cubes that will introduce the science of probability and leave everyone wondering, Which way will the marbles go? With the Q-BA-MAZE, you can create fiery dragons, butterflies with kaleidoscopic wings, towers that resemble dazzling swirls of DNA, or whatever you can imagine!;ENCOURAGE CREATIVITY - For live demonstrations of probability, physics, and art, you can either follow the step-by-step directions or experiment with your own original creations. Challenge your child's spatial skills with hours of continuous play! And don't worry, the Spectrum Set is just one of five Q-BA-MAZE 2.0 building sets.;CREATIONS THAT LAST - Made with MindWare's attention to quality and care, our well-crafted and durable pieces leave you with a new experience every time. The cubes are made from phthalate-free and BPA-free ABS plastic for safety. Please note: This product includes a CHOKING HAZARD and is NOT for children under 3 years of age.;PRODUCT SPECIFICATIONS - Package includes (1) Q-BA-MAZE 2.0 Spectrum Color Set with 30 bottom-exit cubes, 60 single-exit cubes, 30 double-exit cubes, 30 marbles, and 1 instruction booklet. For ages 6 and Up.