i searched for this but wasn't able to find an answer. Maybe it's not even possible yet but i would like to know if it is possible to use an overlay ingame. You see customized overlays on some twitchchannels when they play. I got one which looks so awesome i would like to see it when i play, too.
So, is it possible? I don't mean the Interface like the gameheart, just to clearify that if there is some ambiguity.