Fear Itself 2nd Edition - Rules of Play says:
Fear Itself 2nd Edition plunges ordinary people into a disturbing contemporary world of madness and violence —and inexorably draws them into confrontation with creatures of the Outer Dark, a realm of alien menace. GMs can re-create all the shudders and shocks of the horror genre at their table, whether they use the game’s distinctive mythology or one of their own choosing.