2007 · Kaynak kitap (oyunu geliştirmek için kurallar/seçenekler)

Intruders: Encounters with The Abyss

This supplement introduces more than 20 strange entities and phenomena from the Abyss, with rules for how they enter the Fallen World, what they seek, and how they can be banished back into the void. It also provides story seeds and guidance for using these threats, along with speculation on the nature of the Abyss and its effects on the physical world, Twilight, Shadow, and the Astral planes.