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Spiel logo

Spiel Co., Ltd. (株式会社シュピール). Established August 25, 1990. Headed by Koji Miyoshi (三好弘二). [1] Better known for making eroge under the Love Juice and Over Dose brands.

Research Methods: Actual mentions, shared staff


  • Excave: Ikai no Madoushi-hen / Excave II: Wizard of the Underworld (some programming?) (JP Publisher: Mechanic Arms; US/EU Publisher: Rising Star Games)
Developer: Mechanic Arms
  • Sweet Rendezvous: Sarutsupa / Banana Bliss: Jungle Puzzles (programming?) (JP Publisher: Mechanic Arms; US/EU Publisher: Teyon)
Developer: Mechanic Arms


  • Miss Moonlight (JP Publisher: Naxat)
Scenario Direction: 架空; Graphics (One Person + One Outside Person): Mechanic Arms; Sound: Sorcière Sound Design
  • Yoshia no Oka de Nekoronde... (programming?) (JP Publisher: Naxat)


  • Chou Soujuu Mecha MG (some programming?; under subcontract with Cyclone Entertainment?) (JP Publisher: Nintendo) [2] [3]
Developer: Sandlot
  • Eiken DS Training (programming) (JP Publisher: IE Institute)
All Development, Development Management (Six People + Three Outside People): Mechanic Arms

PC Engine/TurboGrafx-16

  • Bubblegum Crash! (JP Publisher: Naxat)
  • Coryoon (JP Publisher: Naxat)
  • Nekketsu Koukou Dodgeball-bu: PC Soccer-hen (JP Publisher: Naxat)
  • Tsuppari Oozumou: Heisei Han (JP Publisher: Naxat)

PC Engine CD/TurboGrafx-CD

  • Dead of the Brain 1 & 2 (JP Publisher: NEC)
  • Mahjong Sword: Princess Quest Gaiden (programming, some visual graphics?) (JP Publisher: Naxat)
Some Visual Graphics: Winds; Sound: Opus
  • Nekketsu Koukou Dodgeball-bu: CD Soccer-hen (JP Publisher: Naxat)
  • Super Real Mahjong PII & PIII Custom (JP Publisher: Naxat)
  • Super Real Mahjong P-V Custom (JP Publisher: Naxat)
Music, Sound Effects: Opus
  • Yami no Ketsuzoku: Haruka naru Kioku (JP Publisher: Naxat)


  • Can Can Bunny Extra DX (JP Publisher: Cocktail Soft)


  • Motteke Tamago with Ganbare! Kamonohasi (JP Publisher: Naxat)
  • Okappari-Oh (JP Publisher: Naxat)
  • Tehodoki Mahjong: Nyuumon-hen (JP Publisher: Naxat) [4]


  • Kidou Senkan Nadesico: The Blank of 3 Years (some programming?; under subcontract with Scarab?) (JP Publisher: Sega)
Developer: Scarab