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90% positive of 327 · Very Positive · Live from Steam
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Free on Steam. The demo has its own app, so its players are counted separately.
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.
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 90% on 2026-11-01 → 90% today (327 reviews)
Works great on Steam Deck. Results from Valve's own testing.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Thank you for playing Kumitantei: Old-School Slaughter! A small update has been released, fixing some bugs found since the last update.Patch NotesAdded the option to rebind the button used to quickly leave a room without interacting with an exitIf a Card Battl…
Thank you for playing Kumitantei: Old-School Slaughter! An update has been released, further targeting optimization and performance alongside some smaller bugs.Patch NotesDirect3D 12 is now the default renderer. On platforms with additional launch options, Vul…
Hey Absolute Students,We are just a few weeks away from Episode Two! If you missed the announcement, Episode 2 is releasing November 12th! We can’t wait for you to get your hands on it! Which character will die? Who is the killer? Can you solve the case? With …
Happy Halloween from the Kumitantei team!It is spooky season! Get that Christmas music out of here! We have a bundle to fit the spooky vibes in the Macabre Mysteries. Macabre Mysteries is filled with spooky and gloomy games with Whispering Willows, Cabernet, a…
Hey Absolute Students,If you have been a reader of the monthly dev logs then you would have seen that Kumitantei has a new T-Shirt!The team is still hard at work on episode 2 coming out in November! I’m writing the last dev log before episode 2 comes on so kee…
Hey Absolute Students,Episode 2 will be released on November 12th! After the shocking events of Episode 1, we join the Absolute students as a new floor opens and they prepare for a beach outing. Surely nothing bad will happen…Also! Just one final reminder, onc…
Hey Absolute Students,I apologize for the delay on this month’s Dev Log! We’ve been hard at work with development and wanted to ensure that this month’s announcements can stack up to last months! Before we get into the new stuff this time, here’s a quick refre…
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 tha…
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 …
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 fro…
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 celebra…
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 K…
Hello Absolute Students,We’ve partnered with Montabi to bring you the Deckbuilding Cats Duo Bundle!Today, our friends at Mankibo launched their deckbuilding creature-collector Montabi, so we wanted to celebrate! Catch this brand-new bundle and see what's in th…
Hey Absolute Students,Another month has come and gone, and the team has been hard at work on Episode 2, no summer break for anyone here! Now, let’s dive into what the team has been working on this month!Over 250 Steam Reviews!Actually before we get into it, I …
Hey Absolute Students,We’re back with another monthly devlog and boy do we have quite a bit to talk about, so lets not delay and get right into it!Nyanus Plush 100% Fully Funded!Our Kumitantei X Youtooz partnership passed the goal of 200 pledges to bring the N…
Hey Absolute Students, This is the last call to get your very own Nyanus Plushie! The Nyanus plushie pre-orders end at the end of the day today! So if you really want one be sure to pre-order now before it’s over!https://youtooz.com/products/nyanus-plush-9-inc…
Goooood Morning Students!I hope you’ve been enjoying Kumitantei and staying ya know… alive. I can tell that y’all are all super excited to get out of here but BEFORE I can let you go, how about a little proposition.I need your help to bring a certain handsome …
Hey Absolute Students, First off, before I dive into the meat of the dev log, I want to say thank you for the support on the launch of Kumitantei and for all of you who left us a review! Also, I want to thank the bug reporters among you for helping us improve …
Hey Absolute Students,Kumintantei is participating in the Steam Deckbuilders Fest!Steam Deckbuilder Fest highlights a bunch of different games that flip the script on what it means to be a deckbuilder.! If you want to check out all the wacky and unique builder…
Hey Absolute Students,We recently discovered that some of the foreign currency pricing was off from our intended numbers (This does not include USD). We have been working closely alongside Valve to get these issues fixed to make sure you can get the game at th…
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