What are some role-playing games about Japanese history?

Nobunaga Nobunaga I of the National Edition, Nobunaga Nobunaga II of the National Edition, Nobunaga Nobunaga III of the Warring States, Nobunaga Nobunaga IV of the Generals, Nobunaga Nobunaga V of the King of the Hegemony (released in Chinese in 1994), Nobunaga Nobunaga VI of the Sky Shoji (localized in June 1995), Nobunaga Nobunaga VII of the Generals (released in Chinese in July 1997), Nobunaga Nobunaga VIII of the Gale (released in Chinese in June 1999), Nobunaga Nobunaga VII of Shogun (Chinese version released in July 1997), Nobunaga Nobunaga VIII of Gale (Chinese version released in June 1999), Nobunaga Nobunaga IX of Arashi Century

2. Taikaku Rishichuan series

Taikaku Rishichuan, Taikaku Rishichuan II (Chinese version), Taikaku Rishichuan III (Chinese version), Taikaku Rishichuan IV

Taikaku Rishichuan, Taikaku Rishichuan IV, Taikaku Rishichuan IV

3 Others:

Battle of Kawanakajima, Eizo series, World Unification series, Chop.

Sending you a link to the introduction to the Warlords game, the post is a bit old, but the introduction is pretty comprehensive.

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