Koei Co., Ltd. was a Japanese video game publisher, developer, and distributor founded in 1978. The company is known for its "Dynasty Warriors" games based on the novel ''Romance of the Three Kingdoms'', as well as simulation games based on pseudo-historical events. The company has also found mainstream success in a series of loosely historical action games, the flagship titles of which are the ''Dynasty Warriors'' and ''Samurai Warriors'' series, also known as the ''Musō'' series. Koei also owns a division known as Ruby Party, which focuses on otome games. On April 1, 2009, Koei merged with Tecmo to form the Tecmo Koei Holdings holding company. Koei changed its name to Tecmo Koei Games on April 1, 2010 by absorbing Tecmo, and again on July 1, 2014, to Koei Tecmo Games.


Koei was established in July 1978 by Yōichi Erikawa (also known as Kou Shibusawa) and Keiko Erikawa. Yoichi was a student at Keio University, and when his family's rural dyestuffs business failed, he decided to pursue his interest in programming. The company has remained located in the Hiyoshi area of Yokohama. The company initially focused on personal computer sales and made-to-order business software. In 1982, the company released the erotic title (eroge) , which was an early role-playing adventure game with color graphics, owing to the eight-color palette of the PC-8001 computer. It became a hit, helping Koei become a major software company. In 1983 it released , a historical strategy game set during the Sengoku period of Japanese history. The game went on to receive numerous awards, and Koei produced several more such games set against the backdrop of world history, including ''Romance of the Three Kingdoms'', set during the Three Kingdoms period of Chinese history, and , set in Portugal during the Age of Exploration. In 1988, Koei established a North American subsidiary, Koei America Corporation, in California. This subsidiary localized Koei games for export to all territories outside Japan, as well as producing original games and concepts with the leadership of designer Stieg Hedlund, like ''Liberty or Death'', ''Celtic Tales: Balor of the Evil Eye'', ''Gemfire'' and ''Saiyuki: Journey West''. After Hedlund's departure, this subsidiary ceased game development in 1995, focusing instead on localization, sales and marketing. Though none of Koei's historical simulations achieved mass market success, they acquired a loyal cult following. This following allowed Koei to remain profitable, since they could reliably predict how many copies of their games would sell (especially important during the cartridge era, when a surplus of unsold cartridges on a single game was often enough to bankrupt a company). A Canadian subsidiary, Koei Canada, Inc. was established in early 2001, and a European subsidiary, Koei Limited was established in early 2003 in Hertfordshire, United Kingdom. Koei also maintains subsidiaries in mainland China, Korea, Taiwan and Lithuania. Recently, Koei created a Singapore branch for game development such as ''Sangokushi Online''. All Koei operations in English in turn ceased in 2012, with the previously unannounced closing of Koei's North American support forums and website. They resumed in 2016, with the English language PC release of Romance of the Three Kingdoms XIII. Koei's Ruby Party division specializes on games labeled as Neoromance: GxB dating sims, usually with extra side-quests. Out of the three Neoromance series, the best known is Angelique, which has been in production since 1994. Harukanaru Toki no Naka de is a newer Neoromance hit, with many sequels and an anime television series based on it. The newest game in the series, Kin'iro no Corda, is gaining popularity partially because the manga series it was based on, has been recently licensed by ''Viz'' for English language publishing. It gaining more popularity though, and an anime television series based on it began airing in October 2006. A sequel was also released on the PlayStation 2 in March 2007. On September 4, 2008, Koei announced that it was in talks to purchase ailing competitor Tecmo. They agreed in November 2008 to merge on April 1, 2009 to form Tecmo Koei Holdings. On January 26, 2009 the two companies approved the merger, the holding company formed on April 1, 2009 as planned. On April 1, 2010, Koei absorbed Tecmo and renamed itself Tecmo Koei Games. Koei's subsidiaries in the United States, Europe and Korea already had their names changed months before the Japanese parent. On March 15, 2010, the developing operations of Koei and Tecmo were spun off as new companies under the names of Koei Co, Ltd and Tecmo Co, Ltd respectively, but they were integrated into Tecmo Koei Games the following year, on April 1, 2011.

Games by Koei

Koei has built a large base of franchises, and has developed on various consoles and computers. Below is a list of game series developed by Koei.

Action games

*''Bladestorm: The Hundred Years' War'', an action/strategy game based on the Hundred Years' War between England and France. Released for PlayStation 3, PlayStation 4 and Xbox 360. *''BoBoiBoy Galactic Heroes'' – In association with Koei, and based on the Malaysian TV series, BoBoiBoy Galaxy, to be released on Google Play. *''Croc: Legend of the Gobbos''. The Japanese version of the ''Croc'' games distributed by Koei were released for the PlayStation. *''Crimson Sea'' was released for Xbox in 2002, whereas its sequel was released for PlayStation 2 in 2004. *''Destrega'', a 1 vs 1 fighter game for the PlayStation. *''Dynasty Warriors'' 1–9 (as well as expansions ''Xtreme Legends'' for 3–8, ''Empires'' for 4–8, plus a Game Boy Advance, a Nintendo DS and three PlayStation Portable games) '' (真・三國無双 ''Shin-Sangoku Musō''; spin-off of ''Romance of the Three Kingdoms''). *''Dynasty Warriors: Gundam'', for the PlayStation 3 and Xbox 360, it is based on the mechanics of ''Dynasty Warriors'' and ''Samurai Warriors'', only using the ''Mobile Suit Gundam'' franchise as its base. (''ガンダム無双'' Gundam Musō). *''Fist of the North Star: Ken's Rage'' for the PlayStation 3 and Xbox 360. *''Fist of the North Star: Ken's Rage 2'' for the PlayStation 3, Xbox 360, and Wii U *''Hyrule Warriors'' for Wii U, a Dynasty Warriors style game for ''The Legend of Zelda'' franchise. *''Mystic Heroes'' for the Nintendo GameCube and PlayStation 2. *''Nioh'' for PlayStation 4 . *''One Piece: Pirate Warriors'' for the PlayStation 3. *''Prey the Stars'', released for the Nintendo DS. *''Samurai Warriors'', ''Samurai Warriors 2'', ''Samurai Warriors 3'', and Samurai Warriors 4'' (as well as an Xtreme Legends expansion to both, and Empires expansion to 2, a PSP game, ''Samurai Warriors: State of War'', and ''Samurai Warriors: Katana'' for the Wii.) (''戦国無双'' Sengoku Musō). Many spinoffs of this have been created including Derby Musou and Samurai Warriors Chronicles series. *''Stop That Roach!'', an action/puzzle game released in 1994 for Game Boy. *''Toukiden: The Age of Demons'', a monster-hunting action role-playing game. *''Trinity: Zill O'll Zero'', for the PlayStation 3. *''Warriors: Legends of Troy'' is a Koei Canada game which was announced at E3 2009. *''Warriors Orochi'' for the PlayStation 2, PSP, PC and Xbox 360, it is the first Koei crossover title, featuring characters from the ''Dynasty Warriors'' and ''Samurai Warriors'' games. (''無双OROCHI''). *''WinBack'', a third-person shooter game for Nintendo 64 and PlayStation 2. *''Warriors All-Stars'' for PlayStation 4 and PlayStation Vita, a ''Dynasty Warriors'' style game mixing characters from Koei's various franchises, similar to ''Warriors Orochi''. *''Warriors Orochi 3 Hyper'', for the Wii U

History Simulation

*''Bandit Kings of Ancient China'' – Released on the Nintendo Entertainment System, MS-DOS, Amiga & Macintosh. *''Genghis Khan series. *''Liberty or Death'' – Based on the American Revolutionary war. *''Nobunaga's Ambition series'' – published on various platforms. *''Romance of the Three Kingdoms'' I to XIV released on the MSX, MSX2, NES, SNES, Genesis, Amiga, PC-Engine CD-ROM, Sega Saturn, PS1, PS2 and PC – turn based strategy games *''Rise of the Phoenix'' – Based on the wars of the early Han and Chu dynasties in China, released on the SNES.

Strategy games

*''Aerobiz Supersonic'' – Airline simulator *''BoBoiBoy Galactic Heroes'' – From In Association With Koei and Based on the BoBoiBoy go to Galaxy released in Google Play *''Celtic Tales: Balor of the Evil Eye'' – Medieval fantasy simulator.Dembo, Arinn; ''Aye, 'Tis a Bonny Land Indeed: Koei explores the Emerald Isle's Myth and Magic in CELTIC TALES'', p. 214. Computer Gaming World, Issue 134, September 1995 *''Gemfire'' – Medieval fantasy simulator. *''Genghis Khan'' *''Kessen'' *''Kessen II'' *''Kessen III'' *''L'Empereur'' – Turn-based strategy game released on the Nintendo Entertainment System *''P.T.O.: Pacific Theater of Operations'' *''P.T.O. II: Pacific Theater of Operations'' *''P.T.O. IV: Pacific Theater of Operations'' *''Naval Ops: Warship Gunner 2'' *''Nobunaga's Ambition series'' – published on various platforms *''Operation Europe: Path to Victory'' – A strategy game set in Europe during World War II *''Romance of the Three Kingdoms'' *''Teitoku no Ketsudan'' (''PTO: Pacific Theater of Operations'' in North America) – Pacific War strategy games

Executive Series

*''Aerobiz'' and ''Aerobiz Supersonic'' – Airline business simulator series *''Top Management'' – Business simulator series *''Top Management II'' – Released on the Super Famicom, Microsoft Windows PC and NEC PC-9801 *''Winning Post'' – Thoroughbred horse racing management and horse breeding simulator series *''Pop Cutie! Street Fashion Simulation'' – fashion design and business management simulation *''Leading Company'' – Video cassette recorder business simulator

Neo-romance games

*''Angelique'' *''Harukanaru Toki no Naka de'' *''Kin'iro no Corda'' *''Neo Angelique ~Abyss~''


*''Bandit Kings of Ancient China'' *''Brandish'' (Super NES port) *''Danchi Zuma no Yuuwaku'' *''Inindo: Way of the Ninja'' (for Super NES) Also part of Rekoeition series *''Nobunaga's Ambition'' *''Saiyuki: Journey West'' *''Sangokushi Eiketsuden'', ''Sangokushi Koumeiden'', ''Sangokushi Sousouden'' (as Tactical RPG) *''Soul Master'' *''Opoona''

Sports games

*''G1 Jockey'' *''G1 Jockey 4 2007'' *''Fatal Inertia'' *''Winning Post 7 Maximum 2007'' *''Yanya Caballista: City Skater''

Music games

*''Gitaroo Man'' (As well as a PlayStation Portable version called ''Gitaroo Man Lives!'')


*''Ishin no Arashi'' – First game of Rekoeition series. * * – Based on the Age of Discovery. *

Adventure games

*''Saihai no Yukue'' (''采配のゆくえ'')

Erotic games

*''Danchi Zuma no Yuuwaku'' *''Night Life''

Games published by Koei in Europe

*''Disgaea'' series *''Dynasty Warriors 3'' *''La Pucelle: Tactics'' *''Atelier Iris'' series *''Phantom Brave'' *''Makai Kingdom: Chronicles of the Sacred Tome'' *''Colosseum: Road to Freedom'' *''Persona 3'' and ''Persona 3 FES''


External links

* {{Authority control Category:Companies based in Yokohama Category:Video game companies of Japan Category:Video game companies established in 1978 Category:Koei Tecmo Category:Video game publishers Category:Video game development companies Category:Japanese companies established in 1978 Category:Video game companies disestablished in 2010 Category:Japanese companies disestablished in 2010 Category:Defunct video game companies of Japan