Jump scares are loving terrifying, are you guys nuts?!
Penumbra wasn't scary at all once you saw that you were just fighting really loud dogs - however, Amnesia did a good job with helplessness.
Clock Tower is loving stupid imo. (that is, in the sense of scariness. It's a cool story, don't get me wrong.)
If the graphics aren't realistic, I can't get immersed, and I won't be scared.
Minecraft is laughable.