I agree w/ the sexuality--and some violence--10 yr. olds don't need to be playing grand theft auto. But I personally liked (and still do) many war games that are "violent." I mean, heck, Frogger is violent in that you go "splat" when the car runs over you--so there is a line to be drawn, and I draw that line at senseless violence (gang--not war) and sexuality.
You're right 10 year olds don't need to be playing grand theft auto. By then they should have moved on to hardcore pornography as well as extreme hentai such as "legend of the overfiend".