The MAME4droid version based on 0.139u1 even added a specific menu option to select an alternate BIOS like the Universe BIOS, showing how this version was ready for customization.

Mame (Multiple Arcade Machine Emulator) is a popular emulator for arcade games, and the latest version, 0.139u1, has just been released. Along with this release, a new Bios Pack has been made available, which is essential for running many games on Mame.

MAME 0.139u1 (released August 2010) remains one of the most significant versions in emulation history because it serves as the "gold standard" reference set for mobile and low-power hardware, specifically for MAME4droid and the MAME 2010 RetroArch core.

The Ultimate Guide to the MAME 0.139u1 BIOS Pack: Everything You Need to Know

reliably without requiring the massive processing power that modern MAME versions demand. Essential Files in the Pack