The parent game zip file contains the core data. Clone files (e.g., regional variants or bootlegs) only contain the specific files that differ from the parent. Highly space-efficient.
Many games require system BIOS files (like neogeo.zip or qsound.zip ). Leave these zipped and place them directly in the same roms folder as your games. Step 4: Configure MAME to Recognize Your Paths full mame roms install
Without these, none of those systems' games will boot. The parent game zip file contains the core data
When sourcing a full set, you will choose between three distinct formats: full mame roms install