looking for a zombie rpg

Does this even exist? I want to find an openworld RPG like say skyrim but about zombie killing. Basically: first person, open world, zombies. Dead island seems to be something like this.

Dead Island is the closest thing to this at the moment. Fallout 3 and New Vegas have you fight zombie-like ghouls.

You may also want to look into Day Z.

Dead Rising? You can level up and such. But Dead Island is your best bet though.

There isn't alot out there like that. There is some stuff on Steam, mods for HL2, that are good but I don't know if any have RPG elements. Dead Island is the only thing I can think of and it sucks in my opinion. Pretty boring and way too many bugs but you might like it more than I.