Looking for a good zombie/horror game

Like the title says, could someone suggest me a good zombie/horror game? doesnt matter if it's more shooting or less zombie oriented, just want a nice creepy game to lose myself into for a couple of days(have the next week free and want to play something).

Was considering one of the Thief games, just dont want it to be RPG heavy, as lame as it sounds, dont wanna have to think too much, that leaves games like Amnesia or SystemShock out, by the way it doesnt matter if the graphics are somewhat outdated, would love a good creepy atmosphere.

Something like Killing Floor but with an actual plot follow, might as well mention i already own L4D.

Thanks for any help in advance.

Maybe Dead Rising? Sorry to sound so generic.

I can give you some:

Left 4 Dead 2: a fun zombie shooter, you can also play multiplayer campaign and its just fun, using a baseball bat to dislodge zombie heads.

Dead Rising 2: I never played it but some of my friends really like this game, i'll check more on it and tell you.

CoD WaW/ CoD Black Ops:I know its not a zombie shooter but it has nazi zombies:lol:

Resident Evil 5: Its clearly a very famous horror shooter so yea.

Dead Space 2: Its a fun shooter in a very creepy atmosphere and it has a nice story. You can cut limbs and throw them at enemies. very gory.

Those are all I know, Good Luck and have fun :)

dead space 2, red dead redemption: undead nightmare, left 4 dead 2. dead rising 2, resident evil 5, fear 2, bioshock 2.

Maybe I misread your post, but what does Thief or Amnesia have to do with RPGs?

If you want actual combat in the game, I guess I would have to go with Dead Rising (either one).