NeoGeo emulation

[Flavor]

Arcade games are notoriously picky. You need the proper ROMset that pairs with the emulator you're using. I haven't really kept up with this. This is likely a lot better question for the RetroPie forums or maybe the RetroPie Handhelds Facebook group.

https://retropie.org.uk/forum/
https://www.facebook.com/groups/retropiehandhelds/

These following are the "official" links that discuss what ROMset versions go with what emulators. I'm guessing that you're going to want FBA for Neo Geo emulation.
https://github.com/retropie/retropie-set...Burn-Alpha
https://github.com/retropie/retropie-setup/wiki/MAME
https://github.com/retropie/retropie-setup/wiki/Neo-Geo

If you do get/find a good answer elsewhere, please pop a link in here.