Anyone who has played SOMA will probably be surprised to find that - considering it’s from the team behind Amnesia - the first few hours aren't overly scary. Eventually, you meet the first horrific, shambling monstrosity THAT YOU CAN’T OUTRUN and you end up assuring your dry cleaners that the marks on your pants aren’t what they look like.
So yeah, SOMA can be a terrifying game, and one that doesn’t rely on too many jump scares in the way Outlast often does. There’s an ever-present sense of dread when playing SOMA, made all the worse by the sense of isolation it instills in the player by being set at the bottom of the ocean.
Other than the fact it’s a very scary game, SOMA's examination of questions such as ‘what makes us human?’ and ‘is there such thing as a soul?’ could help it become an excellent horror movie that looks beyond the monsters, much like Jacob’s Ladder does.
Due to the fact it’s impossible to talk too much about certain aspects of the game without giving away major spoilers, I’ll leave off the antagonist/protagonist section for this one.