Non-merged . It is larger but simpler to manage.
When downloading a "Full Set," you will often encounter three distinct formats: Mame 0.261 Full Roms
The core data dumped from arcade system boards, cartridges, or BIOS chips. Non-merged
: Combines the "parent" game and all its "clones" (variants) into a single zip file. This saves the most space. Mame 0.261 Full Roms