Kumitantei: Old-School Slaughter

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.

Developer: Mango Factory. Publisher: Akupara Games.

Tags: Solo, Comedy, Anime, Visual Novel.

Steam reviews: Very Positive (89% of 319).

Price: $11.99 (was $14.99, 20% off).

Released 2026-04-23.

Last updated 2026-08-20.

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