You should only download ROMs for games you physically own the original arcade PCB for. Many archival sites operate in a gray area. For educational purposes, look for "MAME 0.139 Full ROM Set" or "0.139u1 Non-Merged Set" on Internet Archive (archive.org) – a repository that often hosts historical software for preservation.
This version sits at a sweet spot before major driver rewrites (like the CPU core changes for CPS, Neo Geo, and System 16/18). Games that run very well in 0.139u1: roms for mame 0139u1
| Category | Examples (These run great) | | :--- | :--- | | Neo Geo (use universe bios) | Metal Slug 1-5, King of Fighters '98-2002, Garou: Mark of the Wolves | | Capcom CPS-1 & CPS-2 | Street Fighter II series, Final Fight, Cadillacs & Dinosaurs, Marvel vs Capcom | | Sega System 16/18 | Golden Axe, Altered Beast, Shinobi, E-SWAT | | Classic 80s Arcade | Donkey Kong, Pac-Man, Galaga, Defender, Robotron | | Fighting Games | Mortal Kombat 1-3, Killer Instinct 1-2 (KI needs CHD files) | | Shmups | Dodonpachi, DonPachi, 1942 series, Raiden series | You should only download ROMs for games you
The parent ROM contains all the files. The clone ROMs are tiny ".zip" files that point back to the parent. This version sits at a sweet spot before
Before we discuss the ROMs, you must understand the architecture. MAME 0.139u1 was the bridge between the "old dummy" ROM structure and the "new merged" sets.