If you are looking for a deep dive into the technical and historical aspects of Neo Geo ROMs and the hardware they power, the article Neo Geo Architecture | A Practical Analysis
The ROM Pack: A collection of game files, typically in .zip or .7z format. You do not need to unzip individual games; emulators read them directly. roms neo geo pack
Benefits of the ROMs Neo Geo Pack
Fighting Games: The crown jewel of the system. This includes the massive King of Fighters series (94-2003), Samurai Shodown, Fatal Fury, and Art of Fighting. If you are looking for a deep dive