Invasion of the Bristlebots comes with two mini-robots — basically motorized toothbrush heads. These guys zoom around like caffeinated cockroaches, spinning, skittering, and bouncing off walls. Resistance is futile. The book bristles with ideas for r obot games and activities: race robots against each other, use the included punch-out walls to construct a bristlebot maze, stage a robot sumo-wrestling match. You can even customize your Bots with the provided wire legs, feelers, and beady eyes. Comes With: 2 brush heads, 2 robotivators, clip, wire, beads