The Alliances expansion offers new rules and components to add further depth and variety to Return to Dark Tower. It includes two new heroes who can be used in any game. The Archwright fortifies buildings to protect the kingdoms; the Haunted Recluse dabbles in forbidden lore to powerful effect. Influence is a new resource that can be used to form alliances with powerful guilds or to thwart the capricious whims of the nobles. It also features new treasures and allies with more intricate abilities for experienced gamers.