i believe i was 11 when i first played gta3 back in 2002. it was the first game i (luckily) picked when i got my first ps2. i didnt know a thing about it, but i picked it because i liked the pictures of all the cars and thought claude looked cool. i also distinctly remember there being a diablo stallion on there too lol i was hoping id get to drive that car.
i got vice city sometime in early 2003 i suppose, and san andreas on release.
I was 13 when I got GTA 3, played that with my cousin who was 10. Both played Vice City at 14 & 11 respectively, then when San Andreas came out, my younger cousin (his brother) played at age 8. My youngest cousin, their brother, played GTA IV with us at age 8 & played Vice City Stories the year before when he was 7.
My cousins are pretty much my brothers, so we've all grown up with access to M rated games at young ages, and I had plenty of M rated games before GTA 3 as well (although not GTA).
The only thing those games have left on us are great tastes in music.
I don't remember my exact age but I was probably 9-11 when I played GTA3 at a cousins house. I wasn't really into keeping up with gaming so I searched the limited, useless internet trying to find a game with a similar cover (My cousin lived in the USA so I couldn't just ask him). Finally, I thought I found it but turns out I found VC and bought it on release week. It wasn't until a few years ago that I released I was actually playing GTA3 all those years ago.