10 Intense Video Game Horror Chase Sequences
9. Slender Man - Slender: The Eight Pages
Best described as the internet's own Bogeyman, it's not Slender Man's featureless face (though it certainly helps) that makes the anomalous entity scary, but an uncanny ability to bend the laws of physics.
Is the business-dressed monster behind that windblown tree? Peering through the window of that decayed shack off in the distance, perhaps? How about, oh, I don't know, right behind me!? Sure, the creepypasta creation, like all horror icons, might have lost his scream factor over the years as familiarisation has set in, but Slender Man remains one of the only beasties in the video game hall of fame that can't be fought, bargained with, or otherwise subdued.
He just is, and often times, that's infinitely more terrifying than being pursued by a bloodthirsty monster with an obvious agenda.