Legions Imperialis: The Rise of the Dark Mechanicum hardcover

The narrative and missions included in this book centre around the Doom of Magma City, a sprawling conflict that set the stage for the Mechanicums wider role in the Heresy. Linked missions and new rules for an Escalation Campaign which tasks players with building up their forces before culminating in a final do-or-die battle appear alongside army lists for Mechanicum Taghmata and Dark Mechanicum forces, as well as full rules for fielding armies entirely composed of Titans and Questoris Knights.