THE ATROCITIES is an engrossing bit of horror which deftly blends unreality and/or mental health issues of several characters to create an atmosphere where a supernatural explanation would almost be better than the alternatives. 

Having finished it, I'm now pretty sure I know what happened (and a specific explanation is offered which I found to be satisfying), but there's just enough wiggle room that I could see a very different explanation being true at the end. I especially love how the canonical explanation is more horrifying (and even more plausible) than some of the previously offered theories, that is well done.

The worldbuilding is fantastic, the aesthetics are detailed and creepy, the cast of characters is small and memorable, and I heartily recommend this to anyone who likes horror with creeping dread.