As you may or may not know, The King's Campaign is an [u]updated[/u] stand alone version of the Royal Blood DLC campaign for Medieval Kingdom Wars One of those updates relates to the Tech Tree for The King's Campaign, which has been re-organized to be based around buildings and their respective units and resources Each chain of techs starts with a building which needs to be unlocked in order to be able to construct it in your towns and cities [img]{STEAM_CLAN_IMAGE}/43875974/04e8a5cdf540be53c75ea75b61d136d8f3ff1dbe.png[/img] For example, you unlock the Barracks (which also unlocks the Billman and Maceman) and additional techs are then available to unlock the Voulgier and Swordsman and provide upgrades for those units Another example is the Stone Mine, which allows stone production in RTS mode and provides an income on the World Map, with subsequent techs enabling the building of Stone Walls and improving mine efficiency Some buildings are unlocked by default, including the Manor which enables basic units Serf (worker), Militia (melee) and Hunter (ranged), as well as the primary resource/income producing buildings Barn, Iron Mine and Stone Mine This should hopefully make more sense to players and make it easier to find the specific tech you are looking to unlock