I am on a Games Dev College Course, and only one of the 4 Tutors play games at all, and even then he only played 1 game every month, all the others dont play games, because you forget that a huge portion of the team are Artests / Designers, that create stuff to go into the game, but never actually play them. But I am only saying that not everyone that works on games actually likes to play games, but I think the ones that do (Which is Probably most of them) play games a lot in their free time, if they actually get any.