Third Person Zombie shooter where all you have to do is survive and get from one point to another, slow zombies occasional boss battles. A mix of dead rising type of zombies, GoW type of shooting, bioshock good or evil thing where you save people or not, and then an insane difficulty mode where you only get like 10 hrs to finish the game from when you start doesn't matter if you stop playing or not, or something like that. and overall a sandbox feel to the game just like GTA.

more games that should have a GTA feel.

Superman, where you fly around and save people like like a spiderman 2 but with superman, same goes for a batman game.

Batman where you can climb up buildings call your batmobile and drive around waiting for distress calls and whatnot.

yup, those'd be great games.