SOMA
SOMA isn’t as frightening as Amnesia: The Dark Descent, but that metric isn’t measured on a linear scale.
Amnesia: The Bunker
I don’t know what the scariest game I’ve ever played is, but Amnesia: The Bunker is high on the list.
Amnesia: Justine
It’s impressive that this formula is still scary even after it’s been imitated to death, but this is an unbelievably frustrating iteration of it.