PSA: Packing your own MAME ROM set — it's easier than you think (and worth it)
Discussing ROM packs requires addressing the legal reality. The legality of downloading ROMs is a complex, grey area, but here are the general principles: pack rom mame
When you download a "ROM Pack" for MAME, you are downloading a ZIP folder containing all these individual files, named precisely how MAME expects them to be named. PSA: Packing your own MAME ROM set —