Genesis Plus GX is an open-source Genesis, Master System, Game Gear, SG-1000 and Sega CD/Mega CD emulator by ekeeke. It is based on an older emulator, Genesis Plus. upports Genesis.Download SVN Build (Wii and libretro only)
Genesis Plus, while older, is available as a standalone program for Windows and DOS. Genesis Plus GX, however, is only available on platforms other than Wii/Gamecube as a result of being a libretro core for RetroArch.
It is claimed that Genesis Plus GX can reach 100% compatibility with all commercial games released on the platforms it supports, all while being made primarily to run on Wii/Gamecube. It is recommended to use this version instead of the original Genesis Plus where possible.