The Smart Robot is one of our most popular robot kits in the store! The kit lets you build a slick-looking domed robot that slides across smooth surfaces under its own power. When it bumps into an obstacle, it simply turns right or left and keeps on going. Its propulsion system involves a rotating sphere and the offset weight of the motor (but that's a secret, so keep it to yourself). Comes with clearly illustrated assembly instructions. Build a maze for your Smart Robot and watch it find it's way out!