Sonic the Hedgehog, or Sonic for short, is a series of video games by Sega. The series, starring the eponymous cartoon blue hedgehog, started in 1991, and has since been Sega's most notable franchise. The Sonic the Hedgehog series contains many games, but the main series chiefly consists of platformers made by the Sonic Team at Sega. Other games in the series, particularly sports games, are made by other studios, including Camelot and Sega Sports R&D.