Koei

Koei Co., Ltd.
Native name
株式会社コーエー
Kabushikigaisha Kōē
Company typeKabushiki gaisha
Subsidiary
IndustryVideo games
FoundedJuly 25, 1978 (1978-07-25)
FounderYōichi Erikawa
Keiko Erikawa
DefunctApril 1, 2010 (2010-04-01)
FateMerged with Tecmo
SuccessorKoei Tecmo Games
HeadquartersYokohama, Japan
ProductsList of Koei Tecmo games
ParentKoei Tecmo (2009–2010)
Websitewww.koei.co.jp/koei_home.html

Koei Co., Ltd. was a Japanese video game publisher, developer, and distributor founded in 1978. The company is known for its historical simulation games based on the novel Romance of the Three Kingdoms, as well as simulation games based on pseudo-historical events.

Koei found mainstream success in its series of loosely historical action games such as Dynasty Warriors and Samurai Warriors, also known as the Musō series. It also owned a division known as Ruby Party, which focuses on otome games.

On April 1, 2009, Koei merged with Tecmo to create the Tecmo Koei Holdings holding company. After operating as subsidiaries of Tecmo Koei Holdings for exactly a year, Koei and Tecmo were combined as a single company on April 1, 2010 to form Tecmo Koei Games (with Koei as the actual surviving corporation).