Fear Itself is a horror TTRPG designed by Robin D. Laws and published by Pelgrane Press, using the investigation-focused GUMSHOE system ("The Roleplaying Game of Personal Horror").
It plunges ordinary people into a contemporary horror where they confront creatures of the Outer Dark, a realm of alien menace. Built for one-shots, it assumes that few, if any, of the protagonists are expected to survive.