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Sonic is a unique Japanese video game series developed and owned by Sega, first created in 1991. This series centers on Sonic, designed as a blue hedgehog with human features, and fights against Doctor Eggman, portrayed as a crazy scientist. Platformers make up most of Sonic's games that its Team creates. The first significant 3D Sonic game, Adventure, was published in 1998 for Dreamcast. Sega continued on PlayStation, Xbox, and Nintendo systems after leaving the console industry in 2001 and switching to th