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Nihon Micom Kaihatsu (日本マイコン開発) was started in May 1985 by Tamio Nakasato, Yosuke Maki, and Yukio Kotoyori. It was incorporated in 1989 as NMK Co., Ltd. (株式会社エヌエムケイ) The company shifted to electromechanical games in the 1990s, then went bankrupt in 1999. [1] [2] [3]

Research Methods: Actual mentions, online resources, shared staff


  • Argus (Jaleco)
  • Aquanix (unreleased) (NMK)
  • Black Heart (UPL)
  • Bomb Jack Twin (NMK)
Video game project approved by:Koei Tecmo Holdings
  • Buta-san (Jaleco)
  • Choujikuu Yousai Macross / Super Spacefortress Macross (Banpresto)
  • Choujikuu Yousai Macross II / Super Spacefortress Macross II (Banpresto)
  • Double Dealer (NMK)
  • Gun Dealer (Tecmo)
100% Code, 100% Sound: Hect Development Division 1
  • Gunnail (Tecmo)
Publishing and sales support:Koei Tecmo Holdings
  • Hacha Mecha Fighter (NMK)
  • Mahjong Channel Zoom In (Jaleco)
  • Mahjong Daireikai (Jaleco)
  • Makai Densetsu / Legend of Makai (Jaleco)
  • P-47 (Jaleco)
  • P-47 Aces (Jaleco)
  • Psychic 5 (Jaleco)
  • Quiz Panicuru Fantasy (NMK)
  • Rapid Hero (JP Publisher: Media Trading) / Arcadia (KR Publisher: NMK)
  • Riot
developed by:Koei Tecmo Holdings
  • Saboten Bombers (Tecmo)
  • Task Force Harrier (UPL)
  • Tenseiryuu / Saint Dragon (Jaleco)
  • Thunder Dragon (Tecmo)
Publishing and sales support:Koei Tecmo Holdings
  • Thunder Dragon 2 / Big Bang (NMK)
  • Uchuu Sensou (unreleased) (NMK)
  • Urashima Mahjong (UPL)
  • USAAF Mustang (UPL)
  • Valtric (Jaleco)
  • Wangan Sensou / Desert War (Jaleco)
  • Yam! Yam!? / Wise Guy (Dooyong)


  • Arkista's Ring (US Publisher: Sammy)
  • Esper Bouken Tai (JP Publisher: Jaleco)
  • Jajamaru Ninpou Chou (JP Publisher: Jaleco)
  • Ninja Crusaders: Ryuuga / Ninja Crusaders (JP/US Publisher: Sammy)
  • Okkotoshi Puzzle Tonjan!? (JP Publisher: NMK)
  • SD Keiji: Blader (JP Publisher: Taito)

Game Boy

  • Sengoku Ninja-kun / Ninja Taro (JP Publisher: UPL; US Publisher: Sammy)
  • Velious II: Fukushuu no Jashin / Rolan's Curse II (JP/US Publisher: Sammy)
  • Velious: Roland no Majuu / Rolan's Curse (JP/US Publisher: Sammy)

Mega Drive/Genesis

  • Fire Mustang (JP Publisher: Taito)

Neo Geo

  • Operation Ragnarok / Zed Blade (SNK)

PC Engine/TurboGrafx-16

  • Mahjong Haouden: Kaiser's Quest (JP Publisher: UPL)
  • P-47: The Freedom Fighter (JP Publisher: Aicom)