The "datfile" is the blueprint. You can find the official fbneo-datfile.zip on the FBNeo GitHub repository or via RetroArch’s online updater. The datfile is an XML document listing every game, every file, every CRC checksum, and every byte size.
FBNeo is also the default arcade core in and is the engine behind many "plug-and-play" arcade cabinets. fbneo complete romset