GTA, should have made this poll to include other blockbuster franchises such as COD and Gran Turismo...
Gotta go with GTA. I like shooters but most everyone I know has always had a Playstation, myself included, so as a result I've never really played Halo.
I only finished San Andreas, but that was a better game than any Halo. The difference is Halo has far more playtime via online gameplay, so I voted Halo.
As a stand alone game GTA is better. Take the online multipler away from halo and its just another game. Story sucks and the graphics are bland. GTA has to be the funniest most exciting game probably behind Drakes Fortune
Never really played a lot of either. GTA was more innovative and more fun, although I liked the Halo "universe" a lot more (as well as the potential for the storyline). Both pretty far down the list for me personally, though I wouldn't say I hate either. Great games, just don't care much for them.
Halo by far, it's not even close. GTA is only going to win in this poll because Halo is only on Xbox and GTA is on every system pretty much.
Not a big fan of Rockstar, don't really like the way their people move in gameplay....but it's close....Vice City was great to me....been playing Reach a lot after I said I used to hate Halo (I'm only playing online now)....gotta go with GTA.