Consider a custom controller interface built on a website/mobile app that sends input to a database and I retrieve these inputs per game loop. Is it possible to map these inputs as well?

(I'm still a little confused about the mapping protocol and whether this mod depends on keypresses)

@tcardlab if you're using Linux, try to check this
https://github.com/jehervy/node-virtual-gamepads

I'll look into this. It would definitely be a special feature that would need to be enabled in the config. I can see how this would be useful though.