– Tools like ClrMamePro or ROMVault can rebuild/verify your set against an FBNeo DAT file (provided in the emulator’s “dats” folder). This saves you from downloading a huge set again.

The "clone" games (like a Japanese version of a US game) require the "parent" zip file to be in the same folder. This saves disk space. Where to Find and How to Use Them

The primary driver for the existence of these sets is preservation. The original arcade cabinets were not built for eternity. Capacitors leak, screens burn in, and circuit boards corrode. As physical hardware disintegrates in landfills or private collections, the digital ROM remains the only viable record of the work.

FBNeo is under active development. New games are added (e.g., obscure Korean PCBs). Old ROMs are redumped. Every few months, the ROMset changes.

: It offers a faster alternative to MAME for many 2D titles, often supporting advanced features like RetroAchievements , netplay, and shaders more smoothly on lower-end hardware. Types of Romsets

If you want to play every known arcade machine ever made , use MAME. If you want to play the best arcade games with low latency, online multiplayer, and on a handheld , use FBNeo + a complete romset.