Understanding the MAME 0.139u1 BIOS Pack The MAME 0.139u1 BIOS Pack is a collection of files for retro arcade games. MAME is software that lets you play old arcade games on your computer or phone.
Here is the "map" Alex followed to get their arcade running: What is a BIOS Pack? Mame 0.139u1 Bios Pack
The game ROM itself might be from a different version set, or the BIOS file is corrupt. Understanding the MAME 0