Grand Theft Auto and Nazi Zombies.
Now I know Nazi Zombie's isn't a stand alone game, but just bear with me: The zombies would have to be like those in I Am Legend (unable to go out in the day.) During the day you go outside you drive around and looking for resources and an easily defended house/building. You then have to hold off the Zombies over night.
EDIT:
Realized someone had roughly the same idea, so here goes attempt number two:
Shadow of the Colossus and [PROTOTYPE]
You play as an Alex Mercer-y type, but instead of fighting Colossi you fight Soldiers/Civilians turned giants from a military accident.
Now I know Nazi Zombie's isn't a stand alone game, but just bear with me: The zombies would have to be like those in I Am Legend (unable to go out in the day.) During the day you go outside you drive around and looking for resources and an easily defended house/building. You then have to hold off the Zombies over night.
EDIT:
Realized someone had roughly the same idea, so here goes attempt number two:
Shadow of the Colossus and [PROTOTYPE]
You play as an Alex Mercer-y type, but instead of fighting Colossi you fight Soldiers/Civilians turned giants from a military accident.