I think a little organisation would be good. A few different threads you could have would be....
Introduction Area - Kinda self-explanatory.
Gaming Area - Where you talk about games, obviously. You could split it again for PS3/360 users.. But eh, it's not really needed.
Fun Area - This can just be where you post a whole loada random poop. If anybody starts forum games they can go there.
Those are three pretty standard threads you see on most big forums. I don't think you need to make like 10 different categories, as like you said, it'd start getting a little confusing. Keep it easy, simple and user friendly!