The title says it all!
The farest I came of the following GTA's:
Grand Theft Auto: Just driving around, did nothing with the missions... I started playing this game when it was published (yes, I was 3-4 at that age, but then I did not knew that people got killed, only I focused on the cars)
Grand Theft Auto Londen 1989: Same as the first version, just drived around, I played also at the same age)
GTA 2: When I was young, I always played this game because I like the cars and the 'special effects'. (what actually was the weapons :P)
GTA 3: Started few months ago, only played mission 1 & 2)
GTA Vice City: Started when I was 7-8, finished just an year ago, I am now doing it over again the storyline)
GTA San Andreas: started 1 year ago when I was starting playing on Argonath RPG, the farest I was in the story line was the mission of '555-we-call'.
GTA Vice City Stories: Since I got an PS2, I buyed this game, I am just in the beginning of this game.
That were all GTA's that I played in my life...