From publisher blurb:
The Fallen is a storytelling game of supernatural horror, Powered by the Apocalypse. You take on the role of a member of The Fallen, humanity’s only real hope against the greatest powers of the universe.
There is one caveat… humankind cannot know you exist or you will be targeted and hunted down by the Inquisition.
The Fallen is powered by the same engine as Apocalypse World, Urban Shadows, and Dungeon World. It is based in the multi-era alternate history known as Shadowed Earth, making mythology and folklore real and twisting it with a bit of fantasy horror.