Definitely! I was 6 years old when I got Tekken 3. Then a bunch of stuff followed, like: Mortal Kombat IV, Resident Evil, Alone in the Dark. GTA San Andreas was the one that was getting me in trouble though, because it looked so real to my parents and they thought they were raising a criminal hahaha. I think ratings are there for a reason and I wouldn't want my child to be playing something that it's not ready for. But all children are not the same, some can handle and understand thing far better than others, so it's not inherently bad to play something off your age rating.