take it away from him, otherwise he'll end up like my old roommate. Hes 21, and doesnt do shit except smoke weed and play games ALL FUCKING DAY. im talkin, id be leaving for work @ 7am, and he's passed out on the couch with the 360 controller on his chest. I stop home on break around noon, and he's balls deep into a game. i come home after work around 5 and he is STILL balls deep into a fucking game. never leaves the house at all unless its to go pickup some weed or cigarettes. Doesn't even party or anything. shit just bothers me. I had to move out because it was pissin me off to the point where i didn't even wanna be friends with him any more, so i moved out to preserve our friendship i guess. /rant
anyways no disrespect intended man, but take all of his xbox rights. if he sees that you are leniant on your punishments then he will expect that in the future as well. good luck