In a strange turn of events, some interesting Sonic Superstars character skin DLC vanished from Steam after being available for 20 minutes. Sega recently capped off an eventful year for its hyperfast platforming mascot with Sonic Superstars, a colorful 2D side-scroller that sees Sonic and his friends race their way through a handful of new locations to stop the nefarious Dr. Eggman and his minions Fang the Hunter and Trip. Sonic Superstars also allows players to roll around at the speed of sound with their friends in four-player co-op or compete against each other in PvP minigames.