Home / Games / Kumitantei: Old-School Slaughter
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.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.
“I originally dismissed this game as a Danganronpa knock-off, while it's true that this game shares many similarities with the original series, there are several choices made in the gameplay loop and the first chapter that help to set Kumitantei apart. After the first chapter, I…”
— a player, Steam review · 10 hrs played“People say that this is a knockoff danganronpa and shouldn't even be considered as an original game and not a fan-game, and mostly I do agree with it 16 Ultimates (Absolutes in KT:OSS but it's the same thing), Monokuma (in this it's Nyanus but it's quite literally monokuma…”
— a player, Steam review · 11 hrs played“I got this game on a whim having never played Danganrompa before. I was surprised to find that it's an unfinished game. It stops after chapter 1. This is actually an early access game but the developers refuse to use the early access system and give dubious reasons as for why. I…”
— a player, Steam review · 11 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
New Bundle! - Macabre Mysteries
Hey Absolute Student, With the release of episode 2 coming in November, we wanted to celebrate with a new bundle! The Macabre Mysteries brings together three adventure games, Cabernet , Kumitantei , a
Episode 2 Coming Out in November!
Hey Absolute Students, Episode 2 is coming out in November! We are locking down November for Episode 2 to come out! We can’t wait to share more about what we are working on for the new episode! Be sur
Akupara Games 10 Year Anniversary Schedule
Hey Absolute Students, We’re 3 days away from our 10 year anniversary Direct and livestream on September 6th! We have some major Kumitantei news happening in the Akupara Games Direct. Come join on Sep
Monthly Dev Log (August 2026) - Revamped Cosmidors Minigame
Hey Absolute Students, I hope your August went well. The team has been hard at work on Episode 2 and can’t wait to share some more new things with you! There’s lots to get into today, so let’s get sta
Celebrating 10 Years of Akupara Games
Hey detectives, Next month is Akupara Games’ 10 year anniversary and we’re celebrating with the first ever Akupara Direct including some news for Kumitantei! Kumitantei . The work the team has been do
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-09-25.
| Genres | Adventure, Indie, RPG |
| Player tags | Comedy · Anime · Visual Novel · Detective · Mystery · Card Battler · 1980s · Horror · Alternate History · Singleplayer · Adventure · Psychological Horror (Steam store community voting) |
| Features | Single-player · Steam Achievements · Full controller support · Steam Trading Cards · Custom Volume Controls · Adjustable Difficulty · DualShock Controller Support · DualShock Controller Support |
| Languages | English * , Spanish - Spain, Japanese, Simplified Chinese * |
| Controller | Full support |
| Achievements | 11 |
| Official site | https://www.kumitantei.com |
Minimum system requirements (PC)
Minimum: OS: Windows 10 (64-bit) Processor: 6th Gen i5/1st Gen Ryzen Series Memory: 4 GB RAM Graphics: NVIDIA GeForce GTX 1050 Ti / AMD Radeon RX 570 (4GB dedicated VRAM) DirectX: Version 12 Storage: 6 GB available space