: This is the authentic arcade dump. While it exists in 0.139u1 sets, it is notoriously difficult to run on older hardware. On many mobile devices using MAME 2010, this version may boot but often suffers from severe performance issues, sometimes running at only 10-15 FPS .
: You specifically need the MAME 2010 ROM set , which corresponds to version 0.139u1. Using ROMs from newer or older MAME versions will likely cause "Missing Files" or "Not Found" errors. metal slug 6 mame 0.139u1 rom
If you are researching MAME’s development history: : This is the authentic arcade dump