One of the select few commentary-less videos of gameplay.
Horrible Screaming Murderer is a very strange joke game found inside the game file directory of another, less absurd title; both made by a unique game developer called Lilith. She typically makes strange 3D unity games about surrealistically melancholic scenarios and vignettes. In this one, essentially, you are running away from a deranged green person until you die. It seems to be completely unwinnable. And yes, I agree, this game is very horrifying.
If you want to check out more from this game developer, check out Crypt Worlds. I don't mean the upcoming sequel. The first game is already out. You just might like playing it.
...Here's the maddening revelation. Horrible Screaming Murderer is found within the files of the (first) Crypt Worlds game, and for some beyond-comprehension reason, HSM himself plays that in his own world, but then ends up inside the Crypt Worlds game, turning himself into a work of single-fiction AND double-fiction, somehow. It's kinda like that "double fake penguin" thing Cybershell brought up, but this time it's confusing.