Is there a way to add more consoles (systems) to the list ?
I saw the "Systems.ini" file and added a custom one on the bottom, but that one did not appear on the drop-down inside RetroJoyBox for adding new systems.
The systems supported by the program are the ones you see in the list. It is not possible to add new systems without changing the code. It also depends a lot on which emulator to use for a certain system. Out of curiosity, which systems / consoles would you need?