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Available Digital · physical unverified

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Released
Apr 23, 2026
Studio
Mango Factory
Platforms
1

Kumitantei: Old-School Slaughter

Apr 23, 2026 Mango Factory 1 platform

Adventure video game Board video game Indie Visual novel Action Comedy Historical Horror Mystery Thriller

Kill each other...for science! The class of '89 is trapped in an elite school killing game. Investigate, solve, and expose your classmates in Kumitantei: Old-School Slaughter, an episodic murder-mystery ADV card-battler inspired by retro anime.

Track the collection you actually own — yourself, or with your AI assistant.

Free, no card, and your collection stays yours to export.

Free, no card, yours to export.

Released
  • April 23, 2026Worldwide
Also known as
Kumitantei: Shouwa no Satsuriku mu Kandou Gakuen くみたんてい:昭和の殺戮無感動学園
Versions
—
Standalone expansions
—
Languages
4 languages English fully voiced
  • English audio · subtitles · interface
  • Japanese subtitles · interface
  • Simplified Chinese subtitles · interface
  • Spanish subtitles · interface

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