Sega Superstars is a game developed by Sonic Team in 2004 for the PlayStation 2 EyeToy. It features a series of games based on previous Sega titles. It also contains Chao, the virtual pets from the Sonic series. This is Sonic's first appearance in a game rated higher than E for Everyone by the ESRB. He would again appear in games rated higher than E in Shadow the Hedgehog and Sonic the Hedgehog, both rated E10+, Sega Genesis Collection and Super Smash Bros. Brawl, both rated T.
A Sega Superstars sequel is in production named Sega Superstars Tennis. The game is being developed for multiformats, including Xbox 360, Playstation 3, Playstation 2, Wii and Nintendo DS. However, rather than being developed by Sonic Team themselves, instead, it's being developed by Sumo Digital.
