I like GTA. I only played San Andreas, though, my cousin got Vice City, so I'm gonna borrow from her soon. I like open-sandbox games, they got some incredible potential. Maybe that's because I hate linearity and endings set in stone. I like my decisions to influence what happens during the game and in the ending. I wish they made a more RPG version of this kinda game. Think San Andreas with skills, but with ACTUAL DIALOGUES! (YES/NO my foot, gimme some cool stuff to talk), more strategic combat and made with PC focus.
Also, I gave up GTASA in the training missions of airplanes. I spent days and days training until I starved and ALLLLL my muscle was gone! DAMN!