EmulationStation displays systems based on a file called es_systems.cfg. In other distributions, this is typically the only file. However, in Batocera FIXME and higher, the /userdata/system/configs/emulationstation/es_systems_<custom_name>.cfg can be used as an overlay to the original /usr/share/emulationstation/es_systems.cfg file.
Added PopCap Games and GOG.com. Add "windows" group also to Win 3.11 and Windows 95