A couple of people (thanks!) forwarded me the Slender: The Arrival beta footage which I've posted below. I watched it, not knowing what to expect, but in hindsight I realise I should have known exactly what to expect, which is a lot of stumbling about in the dark with a flashlight, as the game slowly raises a battery of terrifying drones and horrifying Slender Man images to daunt you as you progress.
A one trick pony, perhaps, but it's a fucking nightmarish pony. The beta comes with 50%-off pre-orders, which are available now.