yes it works well in fbneo

@surrogate01 splatterhouse is not part of the FBA romset, so it won't work in FBA.

it is, however, part of the mame2003 0.78 romset and works. HOWEVER there was a bug fixed in it mid last year, so if you did a full update for 4.0 you should have the fix.

Hmm, that's strange, I will have to go check it out. If you don't notice a drastic issue with Golden Axe's sound, I am not sure what is happening on my end vs. yours or anyone elses. I didn't change any sound options for anything, it is out of the box sound over HDMI and other games work just fine. I will try and update everything and see what happens in the other cores with Golden Axe.