Original: The library of past games currently consists of titles originating from the Nintendo Entertainment System, Super Nintendo Entertainment System, and Nintendo 64, as well as Sega's Master System and Mega Drive/Genesis, NEC's TurboGrafx-16 and TurboGrafx-CD, SNK's Neo Geo AES, Commodore 64 (Europe and North America only) and MSX (Japan only).
Simplified: The games are from the Nintendo Entertainment System, Super NES, Nintendo 64, Sega Master System, Sega Mega Drive, TurboGrafx-16, TurboGrafx-CD, Neo Geo AES, Commodore 64, and MSX (Japan only).