Snes9x is a portable, freeware Super Nintendo Entertainment System (SNES) emulator. It basically allows you to play most games designed for the SNES and Super Famicom Nintendo game systems on your PC or Workstation; which includes some real gems that were only ever released in Japan. TestBuild versions are draft versions - allow you to evaluate the progress of the code between the next official editions of this great Super Nintendo emulator (of course, those who appreciate the super accuracy should reach Higan and other projects based on the Bsnes code by Byu).