75 pieces, 15 of each color. Zoob is a building set with a difference! The pieces move after kids put them together. So kids can play with their Zoob creations instead of just looking at them. Zoob pieces snap, click, and pop together to form joints that rotate, limbs that extend, axles that spin, and lots more. Kids can create simple models in minutes, or get absorbed and spend hours at a time. There's no limit what they can build from animals to aliens from dinosaurs to DNA. Zoob is based on real life systems, so its built-in educational value, encourages kids to learn, explore, and create using the most important tool of all their imaginations. For adults too BTW!