Fear Itself

From 1d4chan

Fear Itself is a RPG book by Robin D. Laws that expands on the GUMSHOE investigative rpg system, first featured in The Esoterrorists. It is a horror game that plunges ordinary people into nightmarish dangers and violence.

Both The Esoterrorists and Fear Itself can be further expanded with The Book of Unremitting Horror, which is a sort of monster manual/scenario ideas supplement. It includes all manner of horrifyingly original monsters, including a snuff golem (an artifical creature created by filming snuff movies), clooties (water spirits who rip out their victim's eyes with horrible hooked fingers), and feral downers (rapist satyrs).