The Book of Desolation is an exciting new expansion for Necromunda that deepens the narrative and expands the setting of Hive Secundus with fresh rules for four distinct gangs: the advanced Spyre Hunters, Secundan Incursion Gangs, the Malstrain, and Malstrain Corrupted Gangs. This expansion also introduces a comprehensive multiplayer Underhells Campaign, new Underhells Scenarios, and additional rules for Abyssal Ferryman Teams who provide support to those venturing into Hive Secundus.

The book includes new Dramatis Personae, rules for Custom Rigs built on the Cargo-8 Ridgehauler chassis, and introduces the Trazior Pattern Sentry Gun.