: While the management of individual games can be easier, the initial download of a Non-Merged set can be larger and more cumbersome. Additionally, maintaining these sets can require more effort, especially if you're downloading updates or fixes for multiple games.

: The industry standard for "rebuilding" sets from one format to another.

: This is the least space-efficient format. Because files (like shared BIOS data or common game assets) are duplicated across hundreds of different ZIPs, a full non-merged set is often twice as large as a "merged" or "split" set. Comparison with Other Sets Contents of a "Clone" ZIP Space Efficiency Best Use Case Non-Merged Everything needed to run the game (Parent + Clone + BIOS) Low (Lots of duplication) "Cherry-picking" specific games Split Only the data unique to that clone Medium Standard full collections Merged Parent and all its clones together in one ZIP High (Smallest size) Archiving the full MAME library Why Choose Non-Merged? Merged? Non-merged? Split? What do people prefer? - Noobs

: If you only want 50 favorite games out of the 10,000+ available, you can simply delete the ones you don't want. In a non-merged set, deleting one file never "breaks" another game.

Ultimately, the best MAME experience is the one that gets you playing games faster. For many, that’s Non-Merged. For purists, it’s Split. But never use Fully Merged unless you enjoy pain.