– Rules for using the World Eaters and daemons of Khorne in games of Warhammer 40,000, with 30 datasheets, five Detachments, and two army-wide rules
– A set of rules to launch your own narrative Crusade, taking part in the Skull Harvest to claim the skulls of worthy foes, and earn the Boons of Khorne
– A guide to painting your Combat Patrol and rules for fielding the Frenzied Reavers in skirmish-sized games

This book also contains a one-use code to unlock Codex: World Eaters content in Warhammer 40,000: The App.