The 0.139u1 set's influence extends far beyond the official MAME emulator. Because of its stability and comprehensive game list, it was used as the reference set for the incredibly popular Final Burn Alpha (FBA) emulator cores found in RetroArch, Lakka, and other popular retro gaming distributions.
Harder to isolate and play specific regional clones on simple frontends. Notable Highlights in the 0.139u1 Game List
The is a specific snapshot of arcade game data from September 2010 . While technically "obsolete" by modern PC standards, it remains the gold standard for mobile and low-power emulation because it is the native romset for popular apps like MAME4droid (0.139u1) on Android and MAME4iOS . Performance & Compatibility
Pac-Man, Ms. Pac-Man, Donkey Kong, Galaga, Frogger, Centipede.
In a split set, a clone game relies on the parent game zip file to work. For example, pacman.zip (parent) contains all the core data. pacmanf.zip (Fast Pac-Man clone) only contains the modified code. Saves massive amounts of hard drive space.