take a look at this thread in RetroPie forums. The newest 6xxx branch runs on Raspberry Pies, support for PAK file loading via CLI was also added. Maybe it is possible to port this to BATOCERA? Maybe this can be ported to other platforms, too? 😉
Appreciate feedback 😉
Here is a list of games that are playable with OpenBOR engine
Just to show what OpenBOR is ....