There is a mod that makes the Capital Wateland so dark that you can't move. Well, what if some creepy animals came into play at night? Like people would tell you to make sure to be inside at night or else "they'll come get you"? Point I'm trying to make is what creature, real or not, a creature that truly does terrify you, would come out? Can be anything, and don't lie to yourself because we all have that one thing that scares the living hell out of us, a creature that actually makes us scared for our lives. Mine would be the Necromorphes.