'''Koei Co., Ltd.''' 『株式会社コーエー』 is a video game company best known for its historically-based (and [[VeryLooselyBasedOnATrueStory loosely-based]]) video games, especially those set in feudal China or Japan. They made their name in Japan with TurnBasedStrategy games such as ''VideoGame/NobunagasAmbition'', but outside Japan by far the most successful of their games is the ''[[VideoGame/DynastyWarriors Warriors]]'' (''Musou'') franchise of HackAndSlash games (which includes ''VideoGame/DynastyWarriors'', ''VideoGame/SamuraiWarriors'' and the crossover ''VideoGame/WarriorsOrochi'').

The company also distributes games from Creator/NipponIchi's catalog in North America and Europe. In 2010, Koei merged with Creator/{{Tecmo}}, and the resulting parent company became known as '''Tecmo Koei Corporation'''. Its name was changed again to ''Koei Tecmo Corporation'' in July 2014 to be more in line with its "KT" logo, similarly to Bandai Namco changing its name from Namco Bandai Games Inc. the same year.

Music/YokoKanno worked for Koei in the late 80s and early 90s, composing scores for many of their games.

!!Games created/developed by Koei:

[[folder: Dating Sim ]]

* ''Franchise/{{Angelique}}''
* ''VideoGame/HarukanaruTokiNoNakaDe''
* ''VideoGame/KiniroNoCorda''


[[folder: Hack And Slash ]]

* ''[[Literature/TheHeroicLegendOfArslan Arslan]]: The Warriors of Legend''[[superscript:1]]
* ''VideoGame/AttackOnTitan2016''[[superscript:1]]
* ''VideoGame/BerserkAndTheBandOfTheHawk''[[superscript:1]]
* ''VideoGame/BladeStormTheHundredYearsWar''
* ''Crimson Sea''
* ''VideoGame/DragonQuestHeroesTheWorldTreesWoeAndTheBlightBelow''[[superscript:5]]
* ''VideoGame/DragonQuestHeroesIITwinKingsAndTheProphecysEnd'' [[superscript:5]]
* ''VideoGame/DynastyWarriors''
* ''VideoGame/DynastyWarriorsGundam''[[superscript:3]]
* ''VideoGame/FireEmblemWarriors''[[superscript:1, 2]]
* ''VideoGame/FistOfTheNorthStarKensRage''[[superscript:1]]
* ''VideoGame/HyruleWarriors''[[superscript:1, 2]]
* ''Mystic Heroes''
* ''VideoGame/OnePiecePirateWarriors''[[superscript:1,3]]
* ''VideoGame/SamuraiWarriors''
* ''VideoGame/WarriorsOrochi''
* ''VideoGame/WarriorsLegendsOfTroy''
* ''VideoGame/WarriorsAllStars''/''VideoGame/MusouStars''[[superscript:1]]


[[folder: Role Playing Game ]]

* ''VideoGame/{{Atelier}}'' series (since 2012)[[superscript:1,4]]
** ''VideoGame/AtelierAyeshaTheAlchemistOfDusk''
** ''[[VideoGame/AtelierTotoriTheAdventurerOfArland Atelier Totori Plus ~The Adventurer of Arland~]]''
** ''[[VideoGame/AtelierMeruruTheApprenticeOfArland Atelier Meruru Plus ~The Apprentice of Arland~]]''
** ''VideoGame/AtelierEschaAndLogyAlchemistsOfTheDuskSky''
** ''[[VideoGame/AtelierRoronaTheAlchemistOfArland Atelier Rorona Plus ~The Alchemist of Arland~]]''
** ''VideoGame/AtelierShallieAlchemistsOfTheDuskSea''
** ''VideoGame/AtelierSophieTheAlchemistOfTheMysteriousBook''
** ''VideoGame/AtelierFirisTheAlchemistAndTheMysteriousJourney''
** ''VideoGame/AtelierLydieAndSuelleTheAlchemistsAndTheMysteriousPaintings''
* ''Ciel Nosurge''[[superscript:1,4]]
** ''Ar nosurge: Ode to an Unborn Star''[[superscript:1,4]]
* ''VideoGame/{{Inindo}}: Way of the Ninja''
* ''VideoGame/MonsterRacers''
* Nights of Azure
** ''VideoGame/NightsOfAzure''[[superscript:1,4]]
** ''VideoGame/NightsOfAzure2BrideOfTheNewMoon''
* ''VideoGame/{{Opoona}}''


[[folder: Simulation Game ]]

* ''VideoGame/{{Aerobiz}}'' (airline franchise sim)
* ''VideoGame/NavalOps'' (naval warfare sim)
** ''Naval Ops: Commander''
** ''Warship Gunner 2''
* ''P.T.O.'' (naval warfare sim)
* ''VideoGame/UnchartedWaters'' (sea exploration sim)
** ''VideoGame/UnchartedWatersNewHorizons''
** ''VideoGame/DaikoukaiJidaiIVPortoEstado''
** ''VideoGame/UnchartedWatersOnline''


[[folder: Turn Based Strategy ]]

* ''Bandit Kings of Ancient China''
* ''VideoGame/CelticTales: Balor of the Evil Eye''
* ''L'Empereur''
* ''Videogame/{{Gemfire}}'' (known as ''Royal Blood'' in Japan)
* ''Genghis Khan''
* ''VideoGame/NobunagasAmbition''
** ''VideoGame/PokemonConquest'' ({{Crossover}} between ''VideoGame/NobunagasAmbition'' and ''Franchise/{{Pokemon}}'')[[superscript:1, 2]]
* ''VideoGame/RomanceOfTheThreeKingdoms''
* ''Taikou Risshiden''


[[folder: Other Games ]]

* ''VideoGame/DeStrega'' (magic-based fighting game)
* ''VideoGame/DissidiaFinalFantasy2015'' (3-on-3 fighting game) [[superscript:5]]
* ''VideoGame/GitarooMan'' (rhythm game)
* ''VideoGame/{{Kessen}}'' (real-time strategy)
** ''VideoGame/KessenII''
** ''VideoGame/KessenIII''
* ''VideoGame/{{Nioh}}'' (ActionRPG)
* ''VideoGame/SaiyukiJourneyWest'' (turn-based tactical RPG)
* ''VideoGame/{{Toukiden}}''[[superscript:1]] (action RPG in the veins of ''VideoGame/MonsterHunter'' or ''VideoGame/GodEater'')
* ''[[VideoGame/TrinitySoulsOfZillOll Trinity: Souls of Zill O'll]]''[[superscript:1]]
* ''VideoGame/WinBack'' (third-person shooter)
[[superscript:1]] - published or developed as Tecmo Koei/Koei Tecmo Games\\
[[superscript:2]] - developer; published by Creator/{{Nintendo}}\\
[[superscript:3]] - developer; published by Bandai Namco Games\\
[[superscript:4]] - publisher; developed by Gust Co., Ltd.\\
[[superscript:5]] - developer; published by Creator/SquareEnix