In most jurisdictions, downloading a ROM for a game you do not physically own is considered copyright infringement. Neo Geo games are largely still under copyright by SNK Playmore (now SNK Corporation).
Most archives follow the or FinalBurn Neo naming conventions: neo geo roms archive
Here is a guide to understanding Neo Geo ROM archives, how they work, and how to manage them effectively. In most jurisdictions, downloading a ROM for a
These tools scan your folder of ROMs against a DAT file. They will tell you if you are missing files, if a file is named incorrectly, or if you have "bad dumps." For a serious archive, using these tools is mandatory to ensure games are preserved in a playable state. In most jurisdictions