Description from the publisher: The expansion increases the range of available choices during the Development Stage. The Defenders and the Attacker gain access to 6 new Constructions - overlays for the City and the Camp areas. The Constructions cannot be built freely - they are grouped in pairs among which players can only choose one option. Finishing it blocks the possibility to build its corresponding, alternative Construction. Each Construction unlocks new Order cards or supports players during the siege in other ways. Besides that, in the expansion you will find a new Hero and Commanders who will enable you to catch your enemy unawares and employ completely new tactics.