Aliens, monsters, and other organic baddies I have a hell of a time with, especially when they’re in water or dark places. One of the most frightening things to me is the barnacle from Half Life (and head crabs aren’t too good to me either). I plowed through the citadel in HL2:Episode 1 pretty easily, but I was getting pretty agitated in the first underground part, and as soon as I got past the first room of zombines and I saw the long rope tongues hanging down in the sewer hallway, I quit the game immediately and put it away until I could play during daylight hours.

This could be why I play more fighting games, which tend to be less immersive and more focused on human players. That said, I used to be fairly unsettled by a lot of the imagery in MK.