an open-world,survival, horror,first person shooter

The only game that comes to my mind is Dead Island:)...I really enjoyed that game

dead island is rubbish.

Dead Island for sure.

Yea, Dead Island and DayZ are about it until Undead Labs releases it's Xbox and PC exclusive "Class 3" game, it's a open world, survival horror, third person, zombie simulator.

Fallout 3 GOTY

Not exactly a zombie game but the tunnels are dark and can get pretty spooky.

Dead Island isn't a first person shooter but it does fulfill your other requirements.

Dead Rising if you don't mind third person.

I do not care for dead island, but thats the only one I know of that fits that bill. If you are willing to go to third person, then as someone already suggested dead rising is a good choice, or perhaps the undead redemption expansion for Red Dead Redemption.

Dead Island, not realy scary, but it is an open-world, sort of survival, first person shooter. Most of the times you are using melee.

Fallout 3 GOTY edition, One of the DLC's is good for more horror survival style.

(Arma 2: Combined Operations) with day z mod