Well, I would agree with the originals, but with the Black Ops II maps, I'd say it would have to be Mob of the Dead in my opinion. In Origins, the only part that kind of freaked me out for a while was the Panzer Soldat just chasing me.
Well, Overall I don't know which game of zombies were talking About. But Overall.
In my opinion, i think that Origins or Mob of the Dead are the Scariest maps ever. The old setting in origins, the hanging bodies in MOTD, the trench/ WW1 setting and it's claustrophobic setting in Origins and The amount of zombies on MOTD and how the zombies look in each of the maps. I love these maps, but their really hard and Really creepy!