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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 make friends, but is often instead forced to investigate and solve their grisly murders. Bond with the others to learn their Skills, scour diverse crime scenes for Evidence, and then leverage it all in the stylish and frantic Clinical Trial. Will they band together to uncover secrets of the past, or lose their humanity and lives in the present?
Game modes: Single player
Right now the lowest price for Kumitantei: Old-School Slaughter we're tracking is $11.43 at Instant Gaming — 24% below Steam's $14.99. We compare 4 stores and prices refresh every few minutes.
The lowest price we've recorded for Kumitantei: Old-School Slaughter is $11.41 at Instant Gaming on August 1, 2026. The current best price is about 0% above that low.
92% of 314 Steam user reviews for Kumitantei: Old-School Slaughter are positive ("Very Positive").
Kumitantei: Old-School Slaughter released on April 23, 2026, developed by Mango Factory and published by Akupara Games.
Kumitantei: Old-School Slaughter is available on PC (Microsoft Windows). It supports single player.
Kumitantei: Old-School Slaughter last hit a new low of $11.41 on August 1, 2026 at Instant Gaming. Current best price is $11.43. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest Kumitantei: Old-School Slaughter price right now is $11.43 at Instant Gaming, 24% below the Steam price.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 Instant GamingBest price | -29% | $11.43 | Buy Kumitantei: Old-School Slaughter at Instant Gaming |
 GamersGate | — | $11.99 | Buy Kumitantei: Old-School Slaughter at GamersGate |
 Steam | — | $14.99 | Buy Kumitantei: Old-School Slaughter at Steam |
 Green Man Gaming | — | $14.99 | Buy Kumitantei: Old-School Slaughter at Green Man Gaming |
All-time low: $11.41 at Instant Gaming on Aug 1, 2026 — the current best price is 0% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
