Anyone over 13 is cool with me. Some 14-16 year olds are actually really mature and good at the game. And I agree with the PVE thing. Usually it's older people who are better but that doesn't mean everyone under 16 sucks. Started playing this at 15 (sound like 22 though) and currently 16. Got flawless raider, flawless trials, beaten Skolas, raided as a 29 and 31 and a proud owner of the Guardian Lord trophy.