Knuckles' Chaotix, in Japan called simply Chaotix, is a platform game in the Sonic the Hedgehog series, developed and published by Sega for the Sega 32X. The game was released in North America in March 1995, in Japan on April 21, 1995 and finally in Europe during May 1995. Despite demand from fans, the game's only "re-release" has been through Gametap's PC service.[1] It is the only Sonic-related game to be released for the Sega 32X and its stand out features include its 2D sprite-based graphics and simultaneous two-player gameplay.