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…
Kumitantei: Old-School Slaughter is an adventure developed by Mango Factory, released 23 April 2026 on PC (Microsoft Windows).
What Kumitantei: Old-School Slaughter is
Kumitantei: Old-School Slaughter is an adventure game developed by Mango Factory and released in 2026. It was published by Akupara Games. It is available on PC (Microsoft Windows) only. It runs on Godot.
The premise, in the publisher's words
Himari Sanada is an ordinary girl who's had the greatest Imperial honor for students thrust upon her: an Absolute title and admission to the prestigious military research academy Janus Institute. The morning of her first day however, she does not wake up in her bedroom, instead finding herself trapped alongside 15 other Absolute students within a decaying old bunker seemingly built by their new school. Confronted by a strange two-faced cat, the class learns they've been brought here as test subjects in a kill-or-be-killed Apathy Experiment designed to fracture and drain their very humanity. Himari, the Absolute Barista, desires to overcome the eccentricities of her fellow participants and…
How it plays
It is played from a first person perspective. Its themes are action, comedy, historical and horror. It is a single-player game with no multiplayer component.
What it launched against
Kumitantei: Old-School Slaughter launched on 23 April 2026, within three weeks of Pragmata, Replaced, Directive 8020 and Saros.
Released around the same time: Pragmata, Replaced, Directive 8020, Saros.
Official trailer
Sourced from the publisher’s YouTube channel. See all 6 videos →
Screenshots
All media
Quick answers
Kumitantei: Old-School Slaughter — frequently asked questions
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