The Alliances expansion offers new rules and components to add depth and variety to Return to Dark Tower . It includes two new heroes that can be used in any game. The Archwright fortifies buildings to protect the kingdoms; the Haunted Recluse delves into forbidden knowledge for powerful effects. Influence is a new resource that can be used to form alliances with powerful guilds or thwart the fickle whims of the nobles. It also includes new treasures and allies with more complex abilities for experienced players.