A full set for MAME 0.240 (released around February 2022) typically includes all the data required to run the thousands of arcade machines, computers, and consoles supported by that specific version. : These sets are massive, often exceeding for just the merged ROMs. Matching Versions
Merged/Non-Merged ROMs: All the data needed to run thousands of arcade games, from Pac-Man to 90s fighting games. Mame 0.240 Full Rom Set
To run the Mame 0.240 Full Rom Set, you'll need: A full set for MAME 0
Casual users might download a single ZIP file for Street Fighter II. A Full Rom Set is an entirely different beast. It aims to include every single ROM that MAME 0.240 officially supports. Mame 0.240 Full Rom Set