MAME (Multiple Arcade Machine Emulator) was originally a command-line program created by Nicola Salmoria. It was powerful but user-unfriendly—you had to type commands to launch a game. For casual users, this was a massive barrier.
For many of us, MAME32 (the Windows GUI version of MAME) was the gateway drug. Before the sleek, retro-frontends like LaunchBox or RetroArch existed, MAME32 was our dashboard. It had that clunky, gray Windows 95 aesthetic. It allowed you to audit your ROMs (a feature that was terrifying and essential). mame32 all roms pack
MAME32 All ROMs Pack: The Ultimate Arcade Preservation Guide
Most people download these packs thinking only of the hits: Pac-Man, Donkey Kong, Metal Slug, Street Fighter II. But the reality of an "All Roms Pack" is that 90% of it is obscura. You get Japanese pachinko simulators from 1986, educational typing games, bootleg versions of Tetris that play backward, and casino slots that nobody remembers.