| Title | Japanese Title | Developer | Publisher | Series | Genre | Platforms | Initial Release Date Year | 
| Aerobiz | エアーマネジメント 大空に賭ける | Koei | Koei | Koei Executive | Business simulation | Super NES, Sega Genesis | 000000001992-01-01-00001992 | 
| Aerobiz Supersonic | エアーマネジメントII 航空王をめざせ | Koei | Koei | Koei Executive | Business simulation | Super NES, Mega Drive | 000000001993-01-01-00001993 | 
| All Girl Wrestling: Ultimate Angels |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Ar Nosurge | アルノサージュ ~生まれいずる星へ祈る詩 | Gust | Tecmo Koei | Surge Concerto | Role-playing | PlayStation 3, PlayStation Vita | 000000002014-01-01-00002014 | 
| Atelier series | アトリエ | Gust |  | Atelier | Role-playing |  |  | 
| Angelique | アンジェリーク |  |  |  |  |  | 999999999999-99-99-0000 | 
| Bad News Baseball | 激闘スタジアム | Tecmo | Tecmo |  | Sports video game | NES | 000000001989-01-01-00001989 | 
| Bandit Kings of Ancient China | 水滸伝 天命の誓い | Koei |  |  |  | NES, MS-DOS, Amiga OS, Macintosh[1] | 000000001989-01-01-00001989 | 
| Bastard!! Online |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Bladestorm: The Hundred Years' War | ブレイドストーム -百年戦争 | Omega Force | Koei |  | Historical action/strategy | PlayStation 3, Xbox 360 | 000000002007-01-01-00002007 | 
| Bomb Jack | ボンジャック | Tehkan | Tehkan |  | Platform | Arcade | 000000001984-01-01-00001984 | 
| Bomb Jack World |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Brandish (Super NES port) |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Breaker |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Captain Tsubasa | キャプテン翼 | Tecmo | Tecmo | Captain Tsubasa | Traditional soccer simulation | Family Computer | 000000001988-01-01-00001988 | 
| Captain Tsubasa 2 | キャプテン翼II スーパーストライカー | Tecmo | Tecmo | Captain Tsubasa | Traditional soccer simulation | Family Computer | 000000001990-01-01-00001990 | 
| Captain Tsubasa 3: Koutei no Chousen | キャプテン翼III 皇帝の挑戦 | Tecmo | Tecmo | Captain Tsubasa | Traditional soccer simulation | Super Famicom | 000000001992-01-01-00001992 | 
| Captain Tsubasa 4: Pro no Rival Tachi | キャプテン翼Ⅳ プロのライバルたち | Tecmo | Tecmo | Captain Tsubasa | Traditional soccer simulation | Super Famicom | 000000001993-01-01-00001993 | 
| Captain Tsubasa (Mega-CD) | キャプテン翼 | Tecmo | Tecmo | Captain Tsubasa | Traditional soccer simulation | Sega Mega-CD | 000000001994-01-01-00001994 | 
| Captain Tsubasa 5: Hasha no Shogo Campione | キャプテン翼Ⅴ 覇者の称号カンピオーネ | Tecmo | Tecmo | Captain Tsubasa | Traditional soccer simulation | Super Famicom | 000000001994-01-01-00001994 | 
| Celtic Tales: Balor of the Evil Eye |  | Koei | Koei |  | Medieval fantasy simulation[2] | MS-DOS | 000000001995-01-01-00001995 | 
| Champion Jockey: G1 Jockey & Gallop Racer |  | Koei | Tecmo Koei |  | Alternative sports | PlayStation 3, Wii, Xbox 360 | 000000002011-01-01-00002011 | 
| Ciel Nosurge | シェルノサージュ〜失われた星へ捧ぐ詩 | Gust | Tecmo Koei | Surge Concerto | Life simulation | PlayStation Vita | 000000002012-01-01-00002012 | 
| Crimson Sea |  | Koei | Koei | Crimson Sea |  | Xbox | 000000002002-01-01-00002002 | 
| Crimson Sea 2 |  | Koei | Koei | Crimson Sea |  | PlayStation 2 | 000000002004-01-01-00002004 | 
| Croc series |  |  | Koei (JP) |  |  | PlayStation | 000000001997-01-01-00001997 | 
| Colosseum: Road to Freedom |  | GOSHOW/Ertain | Koei |  | Hack and slash | PlayStation 2 | 000000002005-01-01-00002005 | 
| Danchi Zuma no Yuuwaku |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Dead or Alive Xtreme Beach Volleyball | デッド オア アライブ XTREME BEACH VOLLEYBALL | Team Ninja | Tecmo | Dead or Alive |  | Xbox | 000000002003-01-01-00002003 | 
| Dead or Alive 3 | デッド オア アライブ3 | Team Ninja | Tecmo | Dead or Alive |  | Xbox | 000000002001-01-01-00002001 | 
| Dead or Alive 2 | デッド オア アライブ2 | Team Ninja | Tecmo | Dead or Alive |  | Arcade, Dreamcast, PlayStation 2 | 000000002000-01-01-00002000 | 
| Dead or Alive | デッド オア アライブ | Team Ninja | Tecmo | Dead or Alive |  | Arcade, Sega Saturn, PlayStation | 000000001996-01-01-00001996 | 
| Dead or Alive: Code Chronos |  | Team Ninja | Tecmo Koei | Dead or Alive |  | Xbox 360 | 999999999999-99-99-0000Cancelled | 
| Dead or Alive Paradise | デッド オア アライブ Paradise | Team Ninja | Tecmo | Dead or Alive |  | PlayStation Portable | 000000002010-01-01-00002010 | 
| Dead or Alive Xtreme 2 | デッド オア アライブ XTREME 2 | Team Ninja | Tecmo | Dead or Alive |  | Xbox 360 | 000000002006-01-01-00002006 | 
| Dead or Alive 4 | デッド オア アライブ4 | Team Ninja | Tecmo | Dead or Alive |  | Xbox 360 | 000000002005-01-01-00002005 | 
| Dead or Alive 5 | デッド オア アライブ5 | Team Ninja | Tecmo | Dead or Alive |  | PlayStation 3, Xbox 360, PlayStation Vita | 000000002012-01-01-00002012 | 
| Dead or Alive 5 Ultimate | デッド オア アライブ5 ULTIMATE | Team Ninja | Tecmo | Dead or Alive |  | PlayStation 3, Xbox 360 | 000000002013-01-01-00002013 | 
| Dead or Alive Ultimate | デッド オア アライブULTIMATE | Team Ninja | Tecmo | Dead or Alive |  | Xbox | 000000002004-01-01-00002004 | 
| Dead or Alive: Dimensions |  | Team Ninja | Tecmo Koei | Dead or Alive |  | Nintendo 3DS | 000000002011-01-01-00002011 | 
|
| Deception III: Dark Delusion | 蒼魔灯 | Tecmo | Tecmo | Deception | Strategy-RPG | PlayStation | 000000001999-01-01-00001999 | 
| Deception IV: Blood Ties |  | Tecmo | Tecmo | Deception | Strategy-RPG | PlayStation Vita, PlayStation 3 | 000000002014-01-01-00002014 | 
| Destrega |  | Omega Force | Koei |  | Fighting | PlayStation | 000000001998-01-01-00001998 | 
| Disgaea series |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Dokodemo Rasshou! Pachislo Sengen |  | Tecmo | Tecmo | Rakushou! Pachi-Slot Sengen | Slot machine simulation | PlayStation Portable | 000000002005-01-01-00002005 | 
| Dynasty Warriors: Gundam | ガンダム無双 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, Xbox 360 | 000000002007-01-01-00002007 | 
| Dynasty Warriors: Gundam 3 | ガンダム無双3 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, Xbox 360 | 000000002010-01-01-00002010 | 
| Dynasty Warriors 5: Empires | 真・三國無双4 Empires | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2, Xbox 360 | 000000002006-01-01-00002006 | 
| Dynasty Warriors 5 Special | 真・三國無双4 Special | Omega Force | Koei | Dynasty Warriors |  | Xbox 360, Microsoft Windows | 000000002005-01-01-00002005 | 
| Dynasty Warriors 5: Xtreme Legends | 真・三國無双4 猛将伝 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002005-01-01-00002005 | 
| Dynasty Warriors 4 Hyper | 真・三國無双3 ハイパー | Omega Force | Koei | Dynasty Warriors |  | Microsoft Windows | 000000002005-01-01-00002005 | 
| Dynasty Warriors Advance | 真・三國無双 ADVANCE | Omega Force | Koei (Japan) Nintendo
 | Dynasty Warriors |  | Game Boy Advance | 000000002005-01-01-00002005 | 
| Dynasty Warriors 5 | 真・三國無双5 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2, Xbox | 000000002005-01-01-00002005 | 
| Dynasty Warriors | 真・三國無双 | Omega Force | Koei | Dynasty Warriors |  | PlayStation Portable | 000000002004-01-01-00002004 | 
| Dynasty Warriors Vol. 2 | 真・三國無双 2nd Evolution | Omega Force | Koei | Dynasty Warriors |  | PlayStation Portable | 000000002006-01-01-00002006 | 
| Dynasty Warriors: Strikeforce 2 | 真・三國無双 Multi Raid 2 | Omega Force | Koei | Dynasty Warriors |  | PlayStation Portable | 000000002010-01-01-00002010 | 
| Dynasty Warriors 6 | 真・三國無双5 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2, Xbox 360, Microsoft Windows | 000000002007-01-01-00002007 | 
| Dynasty Warriors 6: Empires | 真・三國無双5 Empires | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, PlayStation Portable, Xbox 360 | 000000002009-01-01-00002009 | 
| Dynasty Warriors: Strikeforce | 真・三國無双 Multi Raid | Omega Force | Koei | Dynasty Warriors |  | PlayStation Portable | 000000002009-01-01-00002009 | 
| Dynasty Warriors: Gundam 2 | ガンダム無双2 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, Xbox 360 | 000000002008-01-01-00002008 | 
| Dynasty Warriors 6 Special | 真・三國無双5 Special | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002008-01-01-00002008 | 
| Dynasty Warriors: Gundam Special | ガンダム無双 Special | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002008-01-01-00002008 | 
| Dynasty Warriors 7 | 真・三國無双6 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, Xbox 360 | 000000002011-01-01-00002011[3] | 
| Dynasty Warriors DS | 真・三國無双 DS ファイターズバトル | Omega Force | Koei | Dynasty Warriors |  | Nintendo DS | 000000002007-01-01-00002007 | 
| Dynasty Warriors 8 | 真・三國無双8 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, Xbox 360, Microsoft Windows | 000000002013-01-01-00002013 | 
| Dynasty Warriors 8: Xtreme Legends | 真・三國無双7 猛将伝 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, PlayStation 4, Microsoft Windows | 000000002013-01-01-00002013 | 
| Dynasty Warriors 8: Empires | 真・三國無双7 Empires | Omega Force | Koei | Dynasty Warriors |  | PlayStation 3, PlayStation 4 | 000000002014-01-01-00002014 | 
| Dynasty Warriors 4: Empires | 真・三國無双3 Empires | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002004-01-01-00002004 | 
| Dynasty Warriors Mahjong | 雀・三國無双 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002003-01-01-00002003 | 
| Dynasty Warriors 4: Xtreme Legends | 真・三國無双3 猛将伝 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002003-01-01-00002003 | 
| Dynasty Warriors 4 | 真・三國無双3 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2, Xbox | 000000002003-01-01-00002003 | 
| Dynasty Warriors 3: Xtreme Legends | 真・三國無双2 猛将伝 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002002-01-01-00002002 | 
| Dynasty Warriors 3 | 真・三國無双2 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2, Xbox | 000000002001-01-01-00002001 | 
| Dynasty Warriors 2 | 真・三國無双 | Omega Force | Koei | Dynasty Warriors |  | PlayStation 2 | 000000002000-01-01-00002000 | 
| Dynasty Warriors | 三國無双 | Omega Force | Koei | Dynasty Warriors |  | PlayStation | 000000001997-01-01-00001997 | 
| Fatal Frame | 零 ~zero~ | Tecmo | Tecmo | Fatal Frame |  | PlayStation 2, Xbox | 000000002001-01-01-00002001 | 
| Fatal Frame II: Crimson Butterfly | 零~紅い蝶~ | Tecmo | Tecmo | Fatal Frame |  | PlayStation 2 | 000000002003-01-01-00002003 | 
| Fatal Frame II: Crimson Butterfly - Director's Cut |  | Tecmo | Tecmo | Fatal Frame |  | Xbox | 000000002004-01-01-00002004 | 
| Fatal Frame III: The Tormented | 零~刺青の聲~ | Tecmo | Tecmo | Fatal Frame |  | PlayStation 2 | 000000002005-01-01-00002005 | 
| Fatal Frame IV | 零~月蝕の仮面~ | Tecmo | Tecmo | Fatal Frame |  | Wii | 000000002008-01-01-00002008 | 
| Fatal Frame: The Black Haired Shrine Maiden |  | Koei Tecmo | Nintendo | Fatal Frame |  | Wii U | 000000002014-01-01-00002014 | 
| Fatal Inertia |  | Koei Canada | Koei |  | Racing | PlayStation 3, Xbox 360 | 000000002007-01-01-00002007 | 
| Final Star Force |  |  | Tecmo |  |  | Arcade | 000000001992-01-01-00001992 | 
| Fire 'N Ice |  |  | Tecmo |  |  | Arcade | 000000001993-01-01-00001993 | 
| Fist of the North Star: Ken's Rage | 北斗無双, Hokuto Musō | Omega Force | Koei |  |  | PlayStation 3, Xbox 360 | 000000002010-01-01-00002010[3] | 
| Fist of the North Star: Ken's Rage 2 |  |  | Koei |  |  | PlayStation 3, Xbox 360, Wii U | 000000002012-01-01-00002012 | 
| G1 Jockey |  | Koei | Koei | G1 Jockey | Horse racing simulation |  | 999999999999-99-99-0000 | 
| G1 Jockey 3 |  | Koei | Koei | G1 Jockey | Horse racing simulation | PlayStation 2 | 000000002003-01-01-00002003 | 
| G1 Jockey 4 2007 |  | Koei | Koei | G1 Jockey | Horse racing simulation |  | 000000002007-01-01-00002007 | 
| Gallop Racer | ギャロップレーサー | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 999999999999-99-99-0000 | 
| Gallop Racer 2 | ギャロップレーサー2 -ONE AND ONLY ROAD TO VICTORY- | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 999999999999-99-99-0000 | 
| Gallop Racer 2001 |  | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 000000002001-01-01-00002001 | 
| Gallop Racer 2003: A New Breed |  | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 000000002002-01-01-00002002 | 
| Gallop Racer 2004 |  | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 000000002004-01-01-00002004 | 
| Gallop Racer 2006 |  | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 000000002005-01-01-00002005 | 
| Gallop Racer 3 | ギャロップレーサー3 -ONE AND ONLY ROAD TO VICTORY- | Tecmo | Tecmo | Gallop Racer | Horse racing simulation |  | 999999999999-99-99-0000 | 
| Gemfire | アクタリオン |  | Koei |  | Medieval fantasy simulation |  | 999999999999-99-99-0000 | 
| Genghis Khan | 蒼き狼と白き牝鹿・ジンギスカン |  |  |  |  |  | 999999999999-99-99-0000 | 
| Gitaroo Man |  |  |  | Gitaroo Man | Rhythm/music game |  | 999999999999-99-99-0000 | 
| Gitaroo Man Lives! |  |  |  | Gitaroo Man | Rhythm/music game | PlayStation Portable | 999999999999-99-99-0000 | 
| GunGriffon: Allied Strike |  | Game Arts | Tecmo | GunGriffon | Mech sim | Xbox | 000000002004-01-01-00002004 | 
| Hanlu | 項劉記 |  | Koei |  |  |  | 999999999999-99-99-0000 | 
| Harukanaru Toki no Naka de | 遙かなる時空の中で (From a Faraway Time) |  |  |  |  |  | 999999999999-99-99-0000 | 
| Head On |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Heir of Zendor |  | Koei | Koei |  |  |  | 000000002005-01-01-00002005 | 
| Hyrule Warriors |  | Omega Force Team Ninja
 | Nintendo |  |  | Wii U | 000000002014-01-01-00002014 | 
| Inindo: Way of the Ninja | 伊忍道 打倒信長 | Koei | Koei |  |  |  | 000000001991-01-01-00001991 | 
| Ishin no Arashi | 維新の嵐 |  |  |  |  |  | 999999999999-99-99-0000 | 
| J League Go Go Goal |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Kagero: Deception II | 影牢~刻命館真章~ |  | Tecmo | Deception |  |  | 999999999999-99-99-0000 | 
| Kessen | 決戦 |  | Koei | Kessen | Historical RTS | PlayStation 2 | 000000002000-01-01-00002000 | 
| Kessen II | 決戦 |  | Koei | Kessen | Historical RTS | PlayStation 2 | 000000002001-01-01-00002001 | 
| Kessen III | 決戦III |  | Koei | Kessen | Historical RTS | PlayStation 2 | 000000002004-01-01-00002004 | 
| Kin'iro no Corda | 金色のコルダ, lit. Golden Corda |  |  |  |  |  | 999999999999-99-99-0000 | 
| La Pucelle: Tactics |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Leading Company |  |  |  |  | Business simulation |  | 999999999999-99-99-0000 | 
| L'Empereur |  |  | Koei |  | Historical strategy | NES | 000000001991-01-01-00001991 | 
| Liberty or Death |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Makai Kingdom: Chronicles of the Sacred Tome | Phantom Kingdom (ファントム・キングダム, Fantomu Kingudamu) | Nippon Ichi Software | Nippon Ichi Software/Koei |  | Tactical RPG | PlayStation 2, PlayStation Portable | 000000002005-01-01-00002005 | 
| Metroid: Other M |  | Team Ninja/Nintendo | Nintendo |  |  | Wii | 000000002010-01-01-00002010 | 
| Mighty Bombjack |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Monster Rancher | モンスターファーム |  | Tecmo | Monster Rancher |  |  | 000000001997-01-01-00001997 | 
| Monster Rancher 2 | モンスターファーム2 |  | Tecmo | Monster Rancher |  |  | 000000001999-01-01-00001999 | 
| Monster Rancher 3 | モンスターファーム3 |  | Tecmo | Monster Rancher |  |  | 000000002001-01-01-00002001 | 
| Monster Rancher 4 | モンスターファーム4 |  | Tecmo | Monster Rancher |  |  | 000000002003-01-01-00002003 | 
| Monster Rancher Advance | モンスターファームアドバンス |  | Tecmo | Monster Rancher |  |  | 000000002001-01-01-00002001 | 
| Monster Rancher Advance 2 | モンスターファームアドバンス2 |  | Tecmo | Monster Rancher |  |  | 000000002002-01-01-00002002 | 
| Monster Rancher Battle Card Game | モンスターファームバトルカードGB |  | Tecmo | Monster Rancher |  |  | 000000001999-01-01-00001999 | 
| Monster Rancher Battle Card: Episode II | モンスターファームバトルカード |  | Tecmo | Monster Rancher |  |  | 000000002000-01-01-00002000 | 
| Monster Rancher EVO | モンスターファーム5 サーカスキャラバン |  | Tecmo | Monster Rancher |  |  | 000000002005-01-01-00002005 | 
| Monster Rancher Explorer | ソロモン |  | Tecmo | 'Monster Rancher |  |  | 000000002000-01-01-00002000 | 
| Monster Rancher Hop-A-Bout | モンスターファームジャンプ |  | Tecmo | Monster Rancher |  |  | 000000002000-01-01-00002000 | 
| Monster Rancher POP | モンスターファームPOP |  | Tecmo | Monster Rancher |  |  | 000000002004-01-01-00002004 | 
| Monster Rancher DS | モンスターファームDS2 甦る!マスターブリーダー伝説! |  | Tecmo | Monster Rancher |  |  | 000000002008-01-01-00002008 | 
| Mystic Heroes |  |  | Koei |  |  | Nintendo GameCube, PlayStation 2 | 000000002002-01-01-00002002 | 
| Naval Ops: Warship Gunner 2 |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Neo Angelique ~Abyss~ | ネオアンジェリーク |  |  |  |  |  | 999999999999-99-99-0000 | 
| Nioh |  | Team Ninja | Tecmo Koei |  |  | PlayStation 4[4] | 2016[5] | 
| Night Life |  | Koei | Koei |  | Eroge | NEC PC-8801 | 000000001982-01-01-00001982 | 
| Ninja Gaiden 3D |  | Team Ninja | Tecmo Koei | Ninja Gaiden |  | Nintendo 3DS | TBA[6] | 
| Ninja Gaiden 3: Razor’s Edge 
 | NINJA GAIDEN 3 Razor's Edge | Team Ninja | Tecmo | Ninja Gaiden |  | Wii U | 000000002012-01-01-00002012 | 
| Ninja Gaiden 3 | NINJA GAIDEN 3 | Team Ninja | Tecmo | Ninja Gaiden |  | PlayStation 3, Xbox 360 | 000000002012-01-01-00002012 | 
| Ninja Gaiden (arcade) | 忍者龍剣伝 | Tecmo | Tecmo | Ninja Gaiden |  | Arcade | 999999999999-99-99-0000 | 
| Ninja Gaiden (NES) | 忍者龍剣伝 | Tecmo | Tecmo | Ninja Gaiden |  | NES | 000000001988-01-01-00001988 | 
| Ninja Gaiden Episode 1: Destiny |  |  | Tecmo | Ninja Gaiden |  |  | 999999999999-99-99-0000 | 
| Ninja Gaiden Hurricane Pack: Volume I |  |  | Tecmo | Ninja Gaiden |  |  | 999999999999-99-99-0000 | 
| Ninja Gaiden II: The Dark Sword of Chaos | 忍者龍剣伝Ⅱ 暗黒の邪神剣 |  | Tecmo | Ninja Gaiden |  | NES | 999999999999-99-99-0000 | 
| Ninja Gaiden III: The Ancient Ship of Doom | 忍者龍剣伝Ⅲ 黄泉の方船 |  | Tecmo | Ninja Gaiden |  | NES | 999999999999-99-99-0000 | 
| Ninja Gaiden Shadow | 忍者龍剣伝GB 摩天楼決戦 |  | Tecmo | Ninja Gaiden |  | Game Boy | 999999999999-99-99-0000 | 
| Ninja Gaiden Trilogy | 忍者龍剣伝 巴 |  | Tecmo | Ninja Gaiden |  | SNES | 999999999999-99-99-0000 | 
| Ninja Gaiden: Hurricane Pack Vol. 2 |  |  | Tecmo | Ninja Gaiden |  |  | 999999999999-99-99-0000 | 
| Ninja Gaiden Sigma 2 | NINJA GAIDEN Σ 2 | Team Ninja | Tecmo | Ninja Gaiden |  | PlayStation 3, PlayStation Vita | 000000002009-01-01-00002009 | 
| Ninja Gaiden II | NINJA GAIDEN 2 | Team Ninja | Microsoft Game Studios | Ninja Gaiden |  | Xbox 360 | 000000002008-01-01-00002008 | 
| Ninja Gaiden Dragon Sword | NINJA GAIDEN Dragon Sword | Team Ninja | Tecmo | Ninja Gaiden |  | Nintendo DS | 000000002008-01-01-00002008 | 
| Ninja Gaiden Sigma | NINJA GAIDEN Σ | Team Ninja | Tecmo | Ninja Gaiden |  | PlayStation 3 | 000000002007-01-01-00002007 | 
| Ninja Gaiden Black | NINJA GAIDEN Black | Team Ninja | Tecmo | Ninja Gaiden |  | Xbox | 000000002005-01-01-00002005 | 
| Ninja Gaiden | NINJA GAIDEN | Team Ninja | Tecmo | Ninja Gaiden |  | Xbox | 000000002004-01-01-00002004 | 
| Ninja Gaiden Z | NINJA GAIDEN Z | Team Ninja | Tecmo | Ninja Gaiden |  |  | 000000002014-01-01-00002014 | 
| Nobunaga's Ambition | 信長の野望 |  |  |  |  |  | 000000001983-01-01-00001983 | 
| Nobunaga's Ambition: Sphere of Influence |  |  |  |  |  | PlayStation 3, PlayStation 4, Microsoft Windows | 000000002015-01-01-00002015 | 
| One Piece: Pirate Warriors | ワンピース 海賊無双 | Omega Force | Bandai Namco Games |  |  | PlayStation 3 | 000000002012-01-01-00002012 | 
| One Piece: Pirate Warriors 2 | ワンピース 海賊無双 2 | Omega Force | Bandai Namco Games |  |  | PlayStation 3, PlayStation Vita | 000000002013-01-01-00002013 | 
| One Piece: Pirate Warriors 3 | ワンピース 海賊無双 3 | Omega Force | Bandai Namco Games |  |  | PlayStation 3, PlayStation Vita, PlayStation 4, Microsoft Windows | 000000002015-01-01-00002015 | 
| Operation Europe: Path to Victory |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Opoona |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Prey the Stars |  |  |  |  |  | Nintendo DS | 999999999999-99-99-0000 | 
| P.T.O.: Pacific Theater of Operations | 提督の決断 | Koei | Koei | PTO | Strategy | Mega Drive, SNES | 000000001992-01-01-00001992 | 
| P.T.O. II: Pacific Theater of Operations | 提督の決断II | Koei | Koei | PTO | Strategy | SNES | 000000001995-01-01-00001995 | 
| P.T.O. IV: Pacific Theater of Operations | 提督の決断IV | Koei | Koei | PTO | Strategy | PlayStation 2, Microsoft Windows | 000000002002-01-01-00002002 | 
| Pinball Action |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Pleiads |  |  | Tecmo |  |  |  | 000000001981-01-01-00001981 | 
| Phantom Brave |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Pop Cutie! Street Fashion Simulation |  |  |  |  | Business simulation |  | 999999999999-99-99-0000 | 
| Project Progressive |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Quantum Theory | クウォンタム セオリー | Team Tachyon | Tecmo |  | Third-person shooter | PlayStation 3, Xbox 360 | 000000002010-01-01-00002010 | 
| Radia Senki: Reimeihen | ラディア戦記 黎明篇 |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Rasshou! Pachislo Sengen |  | Tecmo | Tecmo | Rakushou! Pachi-Slot Sengen | Slot machine simulation | PlayStation 2 | 000000002003-01-01-00002003 | 
| Rasshou! Pachislo Sengen 2: Dekadan |  | Tecmo | Tecmo | Rakushou! Pachi-Slot Sengen | Slot machine simulation | PlayStation 2 | 000000002004-01-01-00002004 | 
| Rasshou! Pachislo Sengen 3: Rio de Carnival, Juujika 600 Shiki |  | Tecmo | Tecmo | Rakushou! Pachi-Slot Sengen | Slot machine simulation | PlayStation 2 | 000000002005-01-01-00002005 | 
| Rasshou! Pachislo Sengen 4: Shin Mogu Mogu Fuurinkasan Rio de Carnival |  | Tecmo | Tecmo | Rakushou! Pachi-Slot Sengen | Slot machine simulation | PlayStation 2 | 000000002006-01-01-00002006 | 
| Real: Another Edition |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Right Brain Game |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Rise of the Phoenix |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms | 三國志 | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | Amiga, MSX, MSX2, NES, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms II | 三國志II | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | Amiga, MSX2, NES, SNES, Genesis, Microsoft Windows, Genesis, WonderSwan | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms III: Dragon of Destiny | 三國志III | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | SNES, Genesis, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms IV: Wall of Fire | 三國志IV | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | SNES, Sega 32X, Sega Saturn, PlayStation, Microsoft Windows, Game Boy Advance | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms V | 三國志V | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | Amiga, MSX2, NES, SNES, Genesis, Microsoft Windows, Genesis, WonderSwan | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms VI: Awakening of the Dragon | 三國志VI | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | Dreamcast, PlayStation, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms VII | 三國志VII | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | PlayStation 2, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms VIII | 三國志VIII | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | PlayStation 2, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms IX | 三國志IX | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | PlayStation 2, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms X | 三國志X | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | PlayStation 2, Microsoft Windows | 999999999999-99-99-0000 | 
| Romance of the Three Kingdoms XI | 三國志XI | Koei | Koei | Romance of the Three Kingdoms | Historical turn-based strategy | PlayStation 2, Microsoft Windows, Wii | 999999999999-99-99-0000 | 
| Rygar | アルゴスの戦士 |  | Tecmo | Rygar |  |  | 000000001986-01-01-00001986 | 
| Rygar: The Battle of Argus | アルゴスの戦士 |  | Tecmo | Rygar |  |  | 999999999999-99-99-0000 | 
| Rygar: The Legendary Adventure | アルゴスの戦士 |  | Tecmo | Rygar |  |  | 999999999999-99-99-0000 | 
| Rygar: The Battle of Argus | アルゴスの戦士 マッスルインパクト | Team Tachyon | Tecmo | Rygar |  | Wii | 000000002008-01-01-00002008 | 
| Saboten Bombers |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Saihai no Yukue | 采配のゆくえ | Omega Force | Koei |  |  | Nintendo DS | 000000002008-01-01-00002008 | 
| Saiyuki: Journey West | 西遊記 Saiyuki |  |  |  |  |  | 999999999999-99-99-0000 | 
| Samurai Warriors: Katana | 戦国無双 KATANA | Omega Force | Koei |  |  | Wii | 000000002007-01-01-00002007 | 
| Samurai Warriors 2: Xtreme Legends | 戦国無双2 猛将伝 | Omega Force | Koei |  |  | PlayStation 2 | 000000002007-01-01-00002007 | 
| Samurai Warriors 2: Empires | 戦国無双2 Empires | Omega Force | Koei |  |  | PlayStation 2, Xbox 360 | 000000002006-01-01-00002006 | 
| Samurai Warriors 2 | 戦国無双2 | Omega Force | Koei |  |  | PlayStation 2, Xbox 360 | 000000002006-01-01-00002006 | 
| Samurai Warriors: State of War | (激・戦国無双) | Omega Force | Koei |  |  | PlayStation Portable | 000000002005-01-01-00002005 | 
| Samurai Warriors | 戦国無双 | Omega Force | Koei |  |  | PlayStation 2, Xbox | 000000002004-01-01-00002004 | 
| Samurai Warriors: Xtreme Legends | 戦国無双 猛将伝 | Omega Force | Koei |  |  | PlayStation 2 | 000000002004-01-01-00002004 | 
| Samurai Warriors: Chronicle | 戦国無双 Chronicle | Omega Force | Koei |  |  | Nintendo 3DS | 000000002011-01-01-00002011[7] | 
| Samurai Warriors 3 Z | 戦国無双3Z | Omega Force | Koei |  |  | PlayStation 3 | 000000002011-01-01-00002011 | 
| Samurai Warriors 3: Xtreme Legends | 戦国無双3 猛将伝 | Omega Force | Koei |  |  | Wii | 000000002011-01-01-00002011 | 
| Samurai Warriors 3 | 戦国無双3 | Omega Force Nintendo
 | Koei (Japan) Nintendo
 |  |  | Wii | 000000002009-01-01-00002009 | 
| Samurai Warriors 4 | 戦国無双4 | Omega Force | Koei |  |  | PlayStation 3, PlayStation 4, PlayStation Vita, Microsoft Windows | 000000002014-01-01-00002014 | 
| Sangokushi Eiketsuden | 三國志英傑伝 |  |  |  |  |  | 999999999999-99-99-0000 | 
| Sangokushi Koumeiden | 三國志孔明伝 |  |  |  |  |  | 999999999999-99-99-0000 | 
| Sangokushi Sousouden | 三國志曹操伝 |  |  |  |  |  | 999999999999-99-99-0000 | 
| Sasami Kisscomi |  | Team Tachyon | Tecmo |  |  | iPhone, iPod Touch | 000000002009-01-01-00002009 | 
| Senjyo |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Shin Megami Tensei: Persona 3 |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| Shin Megami Tensei: Persona 3 FES |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| SilkWorm |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Solomon's Club | ソロモンズ倶楽部 | Tecmo | Tecmo |  | Action Puzzle
 | Game Boy | 000000001991-01-01-00001991 | 
| Solomon's Key |  |  | Tecmo |  |  |  | 000000001986-01-01-00001986 | 
| Soreike Kokology |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Soreike Kokology 2 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Soul Master | (ソウルマスター) |  |  |  |  |  | 999999999999-99-99-0000 | 
| SPRay |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Star Force | スターフォース | Tehkan | Tehkan |  | Shoot 'em up | Arcade, NES, Virtual Console | 000000001984-01-01-00001984 | 
| Stop That Roach! |  | Koei | Koei |  | Action / puzzle | Game Boy | 000000001994-01-01-00001994 | 
| Strato Fighter |  |  | Tecmo |  |  |  | 000000001991-01-01-00001991 | 
| Strike Gunner S.T.G. |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Super Blackjack |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Super Shot Soccer |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Super Star Force: Jikūreki no Himitsu |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Super Swing Golf Season 2 |  | Team Tachyon | Tecmo |  |  | Wii | 000000002007-01-01-00002007 | 
| Super Swing Golf Pangya |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Swimmer |  |  | Tecmo |  |  |  | 000000001982-01-01-00001982 | 
| Taikō Risshiden | 太閤立志伝 |  |  |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Baseball |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Bowl | テクモボウル |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Bowl: Kickoff | テクモボウル GB |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Bowl Throwback |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Classic Arcade |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Cup Soccer Game |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Hit Parade |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Knight |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo NBA Basketball |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Secret of the Stars |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Sports: Bakuretsu King |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Stackers |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Super Baseball |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Super Bowl | テクモスーパーボウル |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Super Bowl II: Special Edition |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Super Bowl III: Final Edition |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Super Hockey |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo Super NBA Basketball |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Cup |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Cup '90 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Cup '93 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Cup '98 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Cup Soccer |  |  | Tecmo |  |  | NES | 000000001990-01-01-00001990 | 
| Tecmo World Golf |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Soccer '96 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo World Wrestling |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tecmo's Deception: Invitation to Darkness | 刻命館 |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Tehkan World Cup |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Teitoku no Ketsudan III | 提督の決断III | Koei | Koei | PTO | Strategy |  | 999999999999-99-99-0000 | 
| Top Management |  |  |  |  | Business simulation |  | 999999999999-99-99-0000 | 
| Top Management II |  |  |  |  | Business simulation |  | 999999999999-99-99-0000 | 
| Tōkidenshō Angel Eyes | 闘姫伝承 ANGEL EYES | Tecmo | Tecmo |  | Fighting | Arcade, PlayStation, PlayStation Network | 000000001996-01-01-00001996 | 
| Tokobot |  | Tecmo | Tecmo | Tokobot | Platformer | PlayStation Portable | 000000002005-01-01-00002005 | 
| Tokobot Plus: Mysteries of the Karakuri |  | Tecmo | Tecmo | Tokobot | Platformer | PlayStation 2 | 000000002006-01-01-00002006 | 
| Touch de Rakushou! Pachislo Sengen: Rio de Carnival |  | Tecmo | Tecmo | Rakushou! Pachi-Slot Sengen | Slot machine simulation |  | 999999999999-99-99-0000 | 
| Toukiden | 討鬼伝 | Omega Force | Tecmo |  |  | PlayStation Portable, PlayStation Vita | 999999999999-99-99-0000 | 
| Trapt |  | Tecmo | Tecmo | Deception |  | PlayStation 2 | 000000002005-01-01-00002005 | 
| Trinity: Souls of Zill O’ll | Trinity: Zill O’ll Zero | Omega Force | Koei | Zill O'll | Action RPG | PlayStation 3 | 000000002010-01-01-00002010[3] | 
| Tsuppari Ōzumō | つっぱり大相撲 | Tecmo | Tecmo |  | Sports game | Family Computer, Virtual Console | 000000001987-01-01-00001987 | 
| Tsuppari Ōzumō: Risshin Shusse Hen | つっぱり大相撲 立身出世編 | Tecmo | Tecmo |  | Sports game | Super Famicom | 000000001993-01-01-00001993 | 
| Uncharted Waters | 大航海時代 Dai Kōkai Jidai; lit. Great Navigation Era) |  |  |  |  |  | 999999999999-99-99-0000 | 
| Uncharted Waters Online | 大航海時代Online |  |  |  |  |  | 999999999999-99-99-0000 | 
| Undead Knights |  | Team Tachyon | Tecmo |  |  | PlayStation Portable | 000000002009-01-01-00002009 | 
| UNiSON |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| V-Goal Soccer '96 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Warriors: Legends of Troy | TROY無双 | Koei Canada |  |  |  |  | 999999999999-99-99-0000 | 
| Warriors Orochi | 無双 OROCHI | Omega Force | Koei |  |  | PlayStation 2, Xbox 360, Microsoft Windows, PlayStation Portable | 000000002007-01-01-00002007 | 
| Warriors Orochi 2 | 無双 OROCHI 魔王再臨 | Omega Force | Koei |  |  | PlayStation 2, PlayStation Portable, Xbox 360 | 000000002008-01-01-00002008 | 
| Warriors Orochi 3 | 無双 OROCHI 2 | Omega Force | Koei |  |  | PlayStation 3, PlayStation Portable, Xbox 360, Wii U | 000000002012-01-01-00002012 | 
| WinBack: Covert Operations |  | Omega Force | Koei |  |  | Nintendo 64, PlayStation 2 | 000000001999-01-01-00001999 | 
| Winning Post | ウイニングポスト |  |  |  | Horse racing, breeding simulation |  | 999999999999-99-99-0000 | 
| Winning Post 7 Maximum 2007 |  |  |  |  |  |  | 999999999999-99-99-0000 | 
| World Cup '94 |  |  | Tecmo |  |  |  | 999999999999-99-99-0000 | 
| Yanya Caballista: City Skater | Yanya Caballista featuring Gawoo (ヤンヤ カバジスタ featuring Gawoo) | Koei | Koei |  | Skateboarding | PlayStation 2 | 000000002001-01-01-00002001 | 
| Yoru no Nai Kuni | よるのないくに | Gust | Tecmo Koei |  | Role-playing | PlayStation 3, PlayStation 4, PlayStation Vita | 000000002015-01-01-00002015 |