This rulebook offers tools and advice to help players create their Chaos cults. It also adds new threats to face, such as the Khorne Berzerkers and Slaaneshi Noise Marines. The book has lots of background information on powerful Daemons and followers of Khorne, Nurgle, Slaanesh, and Tzeentch as well as a whole section dedicated to the Psychic Diabolus.
It will retail for $39.99.
Cubicle 7 will also release A Life Well Lived, a new 5E compatible RPG book (see "'A Life Well Lived'").
