If you own a Neo Geo AES or MVS with a flashcart (like the NeoSD or Darksoft Multi), the ROM allows you to play the game on original hardware with zero lag.
—began reverse-engineering the hardware using custom development kits. Gunlord Neo Geo Rom Download
Recent versions of MAME have added support for NG:DEV.TEAM titles, though configuration can be slightly more complex. If you own a Neo Geo AES or