Do not unzip these files! MAME reads the data inside the ZIP. Keep them zipped.
Regional variants (US vs. Japan), bootlegs, or revised versions. BIOS Files: mame 0.145 roms full set
The definitive, original version of an arcade game's circuit board dump. Usually, this is the original Japanese or North American release of a title. Every game requires its parent ROM to function. Clone ROMs Do not unzip these files