Create a limitless world of people, animals, architecture,robots, vehicles & more with IO Blocks. Each set comprises 12 unique plastic shapes that are inspired by the digital world's 8-bit pixelated design. All IO Blocks connect with a secure yet easily adjustable friction fit. The high-quality design of these blocks with their open-ended building possibilities & problem-solving, puzzle-like qualities make them a great fit for educators & parents interested in STEM skill development. Available in regular & mini sizes. The Regular IO Blocks scale is derived from a .5" cube, the largest pieces measuring 1.5"W x 1.5"L x .5"D. The minis are a quarter of the size of the regulars.