Total War: Shogun 2

In Total War: Shogun 2 you choose from one of 9 (10 with Ikko-Ikki dlc) clans, each with their own unique traits and skills and each with their own RPG-style warlord to lead them.
Use a mixture of diplomacy, political manoeuvring, province building, research and special agents such as Ninja assassins or Geisha spies to get your enemies exactly where you want them.
An intuitive user interface and a lovingly-created, complex and detailed campaign map make it both easy and enjoyable to build and run cities, recruit and move troops and issue commands – both noble and dishonorable, all with the aim of mastering enemy forces and seizing their lands.

In the darkest age of Japan, endless war leaves a country divided. It is the middle of the 16th Century in Feudal Japan. The country, once ruled by a unified government, is now split into many warring clans. Ten legendary warlords strive for supremacy as conspiracies and conflicts wither the empire. Only one will rise above all to win the heart of a nation as the new shogun…The others will die by his sword.