Hi there. I wanna know if fba/mame cores are suppose to work on netplay (a neogeo emu). I’m specifically interested in the spectator mode for streaming purpose but until now I can’t (even in one and two players) with retroarch lasted version 1.3. Can someone recommend me which retroarch version is “better/more tested” for netplay mode?. Thanks.
The FBA/MAME drivers that work with netplay vary. Neo-Geo hasn’t worked in the past, but there were some commits 3 weeks ago that fixed a lot of the savestate/serialization issues with neogeo in this FBA: So that’s probably your best bet.
Well then, I’m happy to announce… IT WORKS!! 
. Three months ago was my last try, but now Neogeo it’s working with this new fba core update. Thanks @hunterk.
Retroarch 1.3.0 - FB Alpha v0.2.97.37
w00t! Thanks for testing it and reporting your success 