Speaking from experience, it seems that every time I start playing games I start to develop pimples depending on how much I play. If I play a lot it develops more. Don't get me wrong...I go to the gym 4 days a week so it's not like I'm idle or anything. I get plenty of weight and cardio training. My diet stays relatively the same. I also notice that my face gets very very oily after a gaming session. Can this be the cause of it?