The way I'd look at it is, it's just a visual indicator for mobile input and not part of the actual game itself, so it would be acceptable. Buttons on the gameboy are located outside of the game screen, so why can't this be too?
cool idea! yeah, seems fine to me if you want to put in that extra work. i don’t see a problem with it, as it seems to fit within the rules. Polyducks will have the final say, but i’m going to guess he’d be fine with it also.
