During the early 2000s, ROM collectors shared “full sets” compressed into .rar archives (hence “rarl” — likely a typo or archaic scene tag). A 188-game Neo Geo set would occupy approximately:
On 56k modems, downloading such a set took weeks. Users split archives across floppy disks or burned CDs. The pursuit of a “complete collection” was part of the emulation hobby’s completionist drive.
NeoRAGEx was developed by a team known as the NeoRAGEx Team (Foos, Rage, etc.). Unlike today’s multi-system emulators (MAME, RetroArch), NeoRAGEx did one thing: run Neo Geo games on Windows 95/98/ME. Version 5.2a featured:
It was revolutionary because it required no BIOS files pre-configured — the emulator hardcoded decryption keys, which later raised legal questions.
The term you're searching seems to refer to a specific package or archive, likely a .rar file, containing a collection of Neo Geo ROMs.
The Neo Geo system existed in two main forms: the Multi Video Entertainment System (MVS) for arcades and the Advanced Entertainment System (AES) for home use. The MVS allowed arcade owners to easily swap games, making it economically viable, while the AES was designed for home gamers, offering near arcade-quality experiences.