Nobunaga’s Ambition II

This military strategy game sequel has depth, requiring diligence. There are five difficulty levels and two modes: one set after Oda Nobunaga has claimed most of Japan, and one before. You must unite/conquer Japan, so being Nobunaga is easiest. You control your daimyo and his samurai governors who rule fiefs. Samurai responsibilities are administrative to bellicose, overseeing commerce, agriculture, and other tasks besides war.