Anki OVERDRIVE Accessory Charging Platform Use your mobile device to take command of real robotic Supercars in Anki OVERDRIVE. Charge up to four Supercars at once with an extra charging platform, so you are always ready for battle. Charging Platform includes 1 four-car charging platform. An Anki OVERDRIVE Starter Kit and a compatible mobile device are required to play. Expand the battle with expansion tracks, Supercars and the all-new Supertrucks.