SEGA today announced that Rise of the Samurai, the latest Total War: Shogun 2 DLC (downloadable content), is now available via Steam. Set 400 years before the dramatic civil war depicted in Shogun 2, the Rise of The Samurai campaign is based on the Gempei War, a conflict between six legendary clans of the Taira, Minamoto and Fujiwara families. A war which culminated in the first Shogun, and the rise of the Samurai as the ruling class. This new campaign can be played in both single and multiplayer modes. and offers six new playable clans, each with unique traits. These clans come with sixteen new land units and ten new naval units between them offering a very different set of strategies to the would-be general. There are also four new hero units including the Tetsubo Warrior Monk Hero and the deadly female Onna Bushi Heroine. As well as all these additions the Rise of the Samurai expansion adds four new agent types, each with their own skill trees.