New games and features are being added on a nearly daily basis. In order to install mame2003-plus, first update RetroPie-Setup! You can find mame2003-plus in the Experimental section. Mame2003-plus is a relatively new libretro emulator core which aims to combine the speed and functionality of the mame2003 codebase with bugfixes and new game support from later versions of MAME.Īrcadez is the founder of mame2003-plus, and arcadez has been using their experience backporting MAME drivers for the original xbox in order to develop mame2003-plus.