I found the game to be a moderately effective (if short) piece of horror. There’s essentially one big reveal, and during the course of the game you get closer and closer to it. The scale of the horror remains constant. You’re not constantly discovering that things are worse than you’d imagined; rather, you’re discovering the ways in which they are bad. Which is OK, but it’s no Anchorhead.
While it’s based on a Lovecraft story, it’s not really all that Lovecraftian. But it is creepy.