became the dominant way to play arcades on Android, the 0.139 romset became a digital currency of sorts. Retro gamers didn't want the "newest" set; they wanted the "0.139 set" because they knew it would work without lag on their phones or handhelds. The Technical "Curse"
: It contains thousands of classic arcade titles from the late 70s through the early 2000s. mame 0139 romset
Arcade ROMs change over time as better dumps are made, so a ROM from a newer set (e.g., 0.261) often will work with a 0.139 emulator. became the dominant way to play arcades on Android, the 0