Screenshots
Watch trailer on Steam ↗Kumitantei: Old-School Slaughter
Mango Factory · Published by Akupara Games · Official site ↗
Content notice: This game may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Frequent Violence or Gore, General Mature Content, Some Nudity or Sexual Content
Very Positive — 92% positive (368 reviews) · Metacritic 79 · 11 achievements
Last updated 27 Sept 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.
£11.99
Lowest price we've ever recorded
View on SteamPrices can lag the live Steam store — always confirm before buying.
Price history
Adventure, Indie, RPG · 2026 · More £5 - £15 games
Delve into a murder mystery where every move counts. In Kumitantei: Old-School Slaughter, investigate and battle your way through an elite school's twisted past.
About this game
Pricing
About the 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!
System Requirements
Will my PC run this? →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
Recommended
- OS: Windows 10 / 11 (64-bit)
- Processor: 8th Gen i5/3rd Gen Ryzen Series
- Memory: 6 GB RAM
- Graphics: NVIDIA GeForce GTX 3060 / AMD Radeon RX 6600 XT (8GB dedicated VRAM)
- DirectX: Version 12
- Storage: 6 GB available space
Supported Languages
*languages with full audio support
Latest news
AnnouncementsOfficial
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, and Whispering Willows together at an extra discount!Remember that Kumitantei will be increasing in price once episode 2 gets released so this may be your best time to get Kumitantei!-riv otterRead full article on Community Announcements ([AG] riv otter)AnnouncementsOfficial
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 sure to keep an eye out on our monthly dev logs appearing at the beginning of each month!Once Episode 2 is released, the game price will be raised to $19.99 so right now is the best time to pick up Kumitantei! It will be 30% off in celebration of the Akupara Games Publisher sale!-riv otterRead full article on Community Announcements ([AG] riv otter)AnnouncementsOfficial
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.Right after the Akupara Direct, we will be livestreaming quite a few games from the Akupara Games library! We hope to see you there!Come join on September 6th at Noon PT for hours of announcements and fun! Also Kumitantei has been discounted in our Publisher Sale to celebrate!https://store.steampowered.com/sale/akuparagames10yearanniversary -riv otterRead full article on Community Announcements ([AG] riv otter)AnnouncementsOfficial
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 started! Akupara Direct and Livestream!First off, we are celebrating the Akupara Games 10 year anniversary by joining the Akupara Direct and Livestream on September 6th! In the Akupara Direct, we will showcase multiple games from our library with a special new reveal for Kumitantei! That’s all we can say for now, so be sure to tune in! You won’t wanna miss this!The Akupara Direct and livestream will be on the Akupara Twitch channel starting September 6th at 12PM PST / 3PM EST.Summer Fan Art Contest 2026 Winners!Thank you to everyone who participated in the Summer Fan Art Contest! Every piece made our eyes sparkle and filled our hearts with joy! If you would like to see more art from the contest, then join the Kumitantei Discord!The Grand Prize Winner is @that_awkward_redhead with her gorgeous art of the cast enjoying a summer sunset! The five Runner-Ups are @starrynorijima, @prettyrhythm, @anodddutchintrovert, @devillierss1, and @guardianrosaria! Sakuya and Tamotsu Skill Card AnimationsWe have two more Skill Card animations ready for you to view! This time they’re for Sakuya and Tamotsu!New Character Sprites for Nyanus, Kaguya, and TamotsuAlongside the new Skill Card animations, we have some new character sprites for Nyanus, Kaguya, and Tamotsu to show off!New-and-improved CosmidorsOne more thing, we’re excited to share that we’ve completely overhauled the Cosmidors minigame leading into Episode 2! It’s now a lot more quick paced and dynamic, and features a bunch of new enemy types. We like to call it Cosmidors DE!Long time fans may recognise this as very similar to a minigame in a fangame some of our staff previously worked on, but we can assure you Kumitantei will not be hitting a Dead End any time soon. We will share more details on the revamp a bit later!Kumitantei x Mo...Read full article on Community Announcements ([AG] riv otter)AnnouncementsOfficial
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!In the Akupara Direct, we will showcase multiple games from our library with a special new reveal for Kumitantei.The work the team has been doing on Episode 2 has been amazing– I’m sure some of you have seen it in the monthly devlogs we’ve been putting out! Well, surprise! Kumitantei is joining the Akupara Direct with a major announcement! Trust me, you aren’t going to want to miss this. We will be streaming the event on the Akupara Twitch! Hope to see you there on September 6th at 12PM PST / 3PM EST!-riv otterRead full article on Community Announcements ([AG] riv otter)
