Koei was foremost established within July 1978 by Kou Shibusawa and Eimalaysia militant group Fukuzawa (a company was known as fallowing a 1st both letters in their number 1 list), & at first concentrate on personal computer sales and processed-to-sequentially business software. Within 1983 it released ''Nobunaga's Ambition (信長の野望 Nobunaga no Yabo), a historical strategy game set during the Sengoku period of Japanese history. A game went in to receive many awards, & Koei produced many thomas more such games placed against a background of globe history, including Romance of the Three Kingdoms (三国志 Sangokushi), set in a period of the Three Kingdoms period of Chinese history, and Uncharted Waters (大航海時代 Dai Kōkai Jidai; lit. Outstanding Navigation Era), placed around Portugal during the Age of Exploration. Around recent years a company has too uncovered profits inside a series of loosely historically-depending action games, the flagship titles of which are then Dynasty Warriors (真・三國無双 (Shin-Sangoku Musō)) and Samurai Warriors (戦国無双 (Sengoku Musō)).

Within 1988, Koei established a North American subsidiary, Koei Corporation, in California. This subsidiary localized Koei games for exportation to completely territories outside of Japan, likewise when producing original games & construct by owning designer Stieg Hedlund (who late went in to project Diablo and Diablo II at Blizzard North) like Liberty or Death, Celtic Tales: Balor of the Evil Eye, Gemfire and Saiyuki: Journey West . This subsidiary ceased bet in development & localization activities inside 1995, focusing instead on sales & marketing.

The Canadian subsidiary, Koei Canada, Inc. was established within early 2001, and the European subsidiary, Koei Limited was estasblished in early 2003 in Hertfordshire, United Kingdom. Koei likewise maintains subsidiaries within China, Korea, and Taiwan.

Strategy games
Romance of the Three Kingdoms (三国志 Sangokushi) Nobunaga's Ambition (信長の野望 Nobunaga no Yabō) Bandit Kings of Ancient China (水滸ä¼? Suikoden)

Kessen (決戦) Taikō Risshiden (太閤立志伝) Aerobiz Genghis Khan Gemfire Disgaea: Hour of Darkness (Only in the Crony version) Liberty or Death Pacific Theater of Operations Celtic Tales: Balor of the Evil Eye

Dynasty Tactics (Sangokushi Senki 三国志戦記)

Action games
Dynasty Warriors (真・三國無双 Shin-Sangoku Musō; spin-off of Romance of the Three Kingdoms) Ni-Oh Samurai Warriors (戦国無双 Sengoku Musō) WinBack

RPGs
Inindo: Way of the Ninja Uncharted Waters (大航海時代 Dai Kōkai Jidai; lit. Smashing Navigation Era) Saiyuki: Journey West (西é?Šè¨˜ Saiyuki)

Sports games

G1 Jockey