Sphero

Sphero makes spherical robots, capable of moving around via command or code. Spherical, colourful, easy to connect. Drag and drop actions, controls, operators, and more can be used to move your robots the way you want.
Sphero SPRK+, Sphero Mini, Sphero BOLT, Sphero RVR. One of them isn't like the others! Sphero RVR is their newest robot, a rover variant that can traverse all terrains, but with the same ease of control and simplistic coding that all Sphero items have!