GB, depending on whether it includes BIOS files and CHDs). It is important to understand that not all files are needed for every emulator. Parent vs. Clone ROMs
Download (the executable). Official builds are still available on the MAME development site under "Old Releases." Mame 0.139u1 Roms Archive
The core game code extracted from the physical arcade PCBs. These are stored as .zip or .7z files. GB, depending on whether it includes BIOS files and CHDs)