Kumitantei: Old-School Slaughter

Kumitantei: Old-School Slaughter

Released Apr 2026

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.

90% positive · 372 reviews
Not yet
Released, but content still planned
High confidence
Content Planned
Not yet
Released, but content still planned
High confidence
Content Planned

Where to buy

Prices in USD, as listed by each store.
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Evaluation

Kumitantei: Old-School Slaughter launched on April 23, 2026 with its first episode. The store description explicitly states the game "will consist of 6 episodes, beginning to release in early 2026," meaning only a fraction of the planned story is currently available. On September 6, 2026, the developer announced that Episode 2 is coming out in November 2026, confirming a concrete near-term release target. The announcement also noted that the base game price will increase to $19.99 upon Episode 2's release. Monthly dev logs have been published consistently since launch — the August 1 log showed new card animations, a card shop system, an overhauled minigame, and a preview of Episode 2's soundtrack. The September 1 log continued previewing new character sprites and card animations for Episode 2. The development team explicitly described themselves as "hard at work on Episode 2" throughout this period. With five of six episodes still unreleased, a publisher-backed studio actively communicating Episode 2 progress through monthly dev logs as recently as September 1, 2026, and a confirmed November 2026 release target, the content roadmap ahead is clear and well-documented.
Evidence
Developer announced Episode 2 is coming out in November 2026, with a price increase to $19.99 upon its release.
news post · Sep 6, 2026 source content planned
high
Monthly dev log (August 2026) shows active Episode 2 development: new character sprites, card animations, and a fully overhauled Cosmidors minigame previewed.
news post · Sep 1, 2026 source development ongoing
high

Content

1 of 1 released · no outstanding content

Media

Details

Developer
Publisher
Akupara Games
Achievements
11
Platform
Windows
Controller
full support
Steam Deck
Verified
Players
Single-player

About this game

Is survival in the cards?

Kumitantei™: Old-School Slaughter is an episodic murder-mystery ADV cardbattler that lovingly fuses retro anime analog horror with killing game! Kumitantei will consist of 6 episodes, beginning to release in early 2026.

"The Empire of Japan, 1989... Awoken in a decaying old bunker, sixteen elite Absolute Students are trapped in a kill-or-be-killed Apathy Experiment. Will they band together to uncover secrets of this anemoic alternate past, or lose their humanity and lives in the present?"

With a visual style inspired by Rumiko Takahashi’s Urusei Yatsura and '80s anime alongside classic Japanese mystery-adventure games like Danganronpa and Ace Attorney, Kumitantei™ thrusts you into a suspenseful character-driven killing game narrative where your deckbuilding and detective skills are the only keys to surviving. It's a creepy-cute love letter to decades of ADVs that wears its many inspirations on its sleeve: perfect for fans of visual novels, detective games, and deckbuilders with deep narratives.

Features:

  • Bond with your classmates! Get to know the Absolute Class of '89 by listening to them, giving them gifts, and receiving powerful cards to use during debates!

  • Investigate grisly murders! Use your detective skills to comb through slain classmates’ crime scenes and take your evidence to trial!

  • Survive the trial! Cut through the lies and prove your case. Inspired by Ace Attorney and the cult classic Danganronpa series, Clinical Trials can only end in bloodshed, whether it's the culprit's or everyone else's!

  • Build your deck! Create absolute combos using cards you find in the Bunker and through bonding with your classmates to dominate the debates and trials!

  • Please insert coin! Test your retro gaming skills in a variety of faithfully crafted anemoic riffs on true old-school arcade icons!

Last evaluated Sep 22, 2026
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