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Astroll (株式会社アストロール), headed by Junichi Mizutari (水足淳一), was originally established on April 28, 1977, as 有限会社ユニック (Unic? Unique?). It became Astroll in June 1997. [1]

The company profile page linked above does not mention anything about Lenar (株式会社レナール). There is a possibility it operated as a separate entity.

Research Methods: Actual mentions, online resources (see Links), shared staff



  • Bird Week (JP Publisher: Toshiba EMI)
  • Image Fight (JP/US Publisher: Irem)
  • Major League (JP Publisher: Irem)
  • Mashou / Deadly Towers (JP Publisher: Irem; US Publisher: Brøderbund)
  • Napoleon Senki (JP Publisher: Irem)
  • Tetris 2 + BomBliss (JP Publisher: BPS)
Junichi Mizutari is credited with bomb sound digitization. [2] Did he do this on behalf of Lenar?
  • Zombie Hunter (background graphics, sound, voice synthesis) (JP Publisher: Hi-Score)

Game Boy

  • Battle of Kingdom (JP Publisher: Meldac)
  • F1 Boy (JP Publisher: ASK Kodansha)
  • Knight Quest (US/JP Publisher: Taito)
  • Tenjin Kaisen / Mercenary Force (JP/US Publisher: Meldac; EU Publisher: Nintendo)

PC Engine/TurboGrafx-16

  • Klax (JP/US Publisher: Tengen)
"J. Mizutari" is credited with audio.
  • Monster Pro Wres (JP Publisher: ASK Kodansha)

Super Famicom/Super NES

  • Gunman's Proof (JP Publisher: ASCII)
  • GT Racing (JP Publisher: Imagineer)
  • Magna Braban: Henreki no Yuusha (JP Publisher: ASK Kodansha)
  • Shushoku Game (JP Publisher: Imagineer)
  • Sun Spo Fishing Keiryu Ou (JP Publisher: Imagineer)
  • Touge Densetsu Saisoku Battle (JP Publisher: BPS)



  • Akiyama Jin Kyouju Kanshuu: Zennou JinJin / MinDStorm / Master Jin Jin's IQ Challenge (co-developed with Altair) (JP Publisher: ASK; EU/AU Publisher: 505 Games; US Publisher: Valcon Games)


  • Cocktail Harmony / Cocktail no Recipe (JP Publisher: Astroll/D3 Publisher)
  • Sound Novel Evolution 2: Kamaitachi no Yoru Tokubetsu-hen (JP Publisher: Chunsoft)

PlayStation 2

  • American Arcade / Pinball (JP Publisher: Astroll; EU Publisher: Play It)
  • EX Billiard / Real Pool (JP Publisher: Takara; US/EU Publisher: Infogrames)
  • Mahou Tsukai Kurohime (JP Publisher: Tomy)

PlayStation 3

  • Seikan (unreleased)