I customized menu in previous versions of Kodi so I can’t see a Games section, I’ve tried to add it but I can’t see any Games entry between the available ones. What’s the problem?
Well, the problem with the menu section is now resolved, in order to add the item I had to used ActivateWindow(Games) after some research on https://kodi.wiki/view/Window_IDs, what I don’t understand is why if OSMC support Kodi 18, how is possible that shortcut doesn’t appear on the list at least.
Finally I’ve been able to see the menu and using a USB Key put some ROMS inside that appears listed, but another problem appears; I know zipped ROMS are not supported unless you change the association with video files, but if I put the ROMS unzipped, since they are from MAME you end up with a folder per ROM with a bunch of small files inside, that seems can’t be loaded by the emulator as is.