MAME is an arcade system emulator that can be used as a libretro core. This core corresponds to MAME 0.174 of the standalone MAME emulator and requires MAME 0.174 ROM sets. See also: MAME 2000, MAME 2003, MAME 2010, MAME 2014, and MAME.
Oggom backported support for the awesome sidescrolling Cave shmup Akai Katana, support for which was just added to upstream mainline MAME.