I've never actually done it; just come somewhat close a few times (one of them was actually playing keyblox while in class, lol). I've played Tetris without glasses, and played Tetris with eyes unfocused, but never actually while falling asleep. Anyone else ever done it? xD There was one time where I considered doing it just to see what it would be like. You know, because falling asleep while trying to write something or do work or whatever usually results in silliness. Maybe it'd be like trying to play while drunk.