Here’s an overview of the game, via Koei Tecmo:
Nobunaga’s Ambition: Sphere of Influence – Ascension highlights some of the most epic battles and notable events of Sengoku Era Japan, when myriads of military officers and lords fought for domination over the land. Players will be able to experience all the events that led from the fracture of the country to the establishments of clans and the forming of alliances before the inevitable clash that led to the emergence of the first Shogunate. Allowing for deeper immersion and insight into these events as well as providing a closer look at the development of strongholds and armies, Ascension provides players with the extra option to begin the game from the position of an officer and ascend through the ranks to become an important warlord—perhaps even the overlord of Japan!
Nobunaga’s Ambition: Sphere of Influence – Ascension will also offer history aficionados the opportunity to experience that same era as a historically-accurate simulation game. Players will be able to take control of their favorite officers and lords, as Ascension boasts a massive array of over 2000 diverse characters to choose from. A number of well-known individuals will offer unique events and exclusive missions, with special attention given to Yukimura Sanada, the famous Japanese samurai whom many of his time heralded as the strongest warrior in Japan. Beginning his journey at the age of 16, players can follow the life of Yukimura and the challenges he faced during the Sengoku period until his eventual defeat at the Siege of Osaka.
Other prominent figures will also receive specially tailor-made content, including feudal lords such as Ieyasu Tokugawa, who rose to become the Shogun at the end of the Warring States period; Mitsunari Ishida, who played a pivotal role at the decisive battle of Sekigahara towards the end of the war; Masamune Date, the lord known as the One-Eyed Dragon; as well as individuals such as Nyosui Kuroda and Morichika Chosokabe whose intriguing stories unfold throughout the game.
View a set of screenshots at the gallery.