Floob
Member
Post count: 1629

Have you confirmed your romsets are correct for gngeo (it could be why some work and some dont)?
https://github.com/retropie/RetroPie-Setup/wiki/Managing-ROMs

For example, there are about 200 (zip) files in the gngeo full romset.

Any difference if you change system to “arcade” in your gngeorc ?