The March of the Damned expansion includes 165 cards (55 unique cards in 3 copies each) consisting of new units, tactics, and support cards for all six major factions. Also included are exciting new neutral cards for the Lizardmen (Order only) and Vampire Counts (Destruction only).

March of the Damned also contains a short story by Daniel Lovat Clark, written to help immerse players in the rich setting of the Old World while introducing them to the mysterious Lizardmen and the vile Vampire Counts.