
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.
Modeled estimate, not a reported figure. How we estimate →
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 0.29/day in the week to Sep 4 → 0.86/day in the week after.
For scale, across Steam · Top Sellers · Brazil over the last 30 days: the 26 chart moves that followed a price cut of more than 20% went a median of 7 places towards #1, and the 2,402 moves with no price cut behind them went 2 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About
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.

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!
Add-ons
Each DLC is estimated with the same model as a game, then summed — a modeled figure, not reported DLC sales.
Sums Steam only; GOG, Epic publish no volume signal, so the true total is higher by an unknown amount.
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
SteamYou are here | $14.99 | 366reviews | 92% | — | $128.3K |
| $11.99−20% | 4ratings | 86% | — | not modelled | |
Engagement
Reviews
Themes across 85 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Du grand Ganganrompa, bien qu'il n'ont pas officiellement la licence non seulement il respect mais sublime la trilogy initial et la formule des Ganganrompa que nous aimons tant. Un pur bonheur à jouer
This Game is an amazing addition to the Danganronpa formula style of game, With such intriguing characters, amazing voice acting and beautifully drawn art style/animations I have incredibly high hopes for this game. The main theme of apathy is a very interesting concept to explore as it's not always black and white but a spectrum of emotions (or lack thereof I should say). I can't wait for the rest of the episodes to come out, again I cannot reiterate this enough but I have incredibly high hopes for this game.
Media

Related
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Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Spanish - Spain, Japanese, Simplified Chinese*languages with full audio support
| $14.99 |
| — |
| — |
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| not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Hours played at review time, across 85 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
ВОСХИТЕТЕЛЬНЫЙ идейный наследник данганронпы! С нетерпением жду следующих частей!
daganronpa but niche
Pretty neat Danganronpa-like! Only a single chapter so far, but the devs seem pretty confident on a regular release schedule from what I've seen.
was browsing steam sales when i came across this, impulse purchased it because i love danganronpa and similar murder investigation games and the idea of a "card battler murder investigation" intrigued me. best impulse purchase ive ever made! the voice work is amazing, the writing is both hilarious and compelling, and all the characters are their own flavor of interesting without feeling forced or too cheesy. gives me the same feelings i had when i first played danganronpa all those years ago. HIGHLY recommend if you're a fan of murder mysteries/the danganronpa format and i can't wait to see where this story goes in future episodes!!!!!
Some spoilers ahead /// be warned! I will mark when I get into text ruining territory, everything before then will have a spoiler mark. I am in shock at how much I enjoyed this game? The writing is insanely good, especially paired with its contemporaries, and this far exceeds what I would want out of a base danganronpa game, the first chapter is an insane hook and I can't wait for the rest to come out, worth every penny! I love the voice acting a lot, there are some audio mixing issues I noticed throughout the trial, such as some lines not being loud enough, I had to turn the music down during [spoiler] some of Shigure Ogasawara's lines in the clinical trial [/spoiler] just so I could hear them. The gameplay is really good and I enjoy the card gimmick, though I believe it can be a bit more refined. The progression of the characters relationships to one another feels natural and works well in both the confines of the story and in the optional content as well, though I say this as someone who has only done one playthrough of this game. I have so much to say about every character but those feelings would be difficult to put into words, play this ♥♥♥♥, build your own feels for the characters, love them, and cry bc the entire game is not out yet and its PEAAAAAAAAAAAK!!!! [h1] More spoilery stuff below!! play the game for yourself first <3 [/h1] I LOVE the protagonist so much, her voice actress does an amazing job (especially in the last scene of chapter 1) and her interactions with Kaguya are INCREDIBLE, it had me in tears honestly. The art isn't stellar but its simplicity allows the characters and space to breathe, the animation is fluid and pretty :3 wa wa wa.. Music is insanely good I fw it heavy. uhhhhhhhhhhh this game is well worth it even this early in development and I can't wait for it to gain more traction!
PREAMBLE If I had a nickel for every time I thoroughly enjoyed a new game that released on April 23, 2026, I would have two nickels. It's not a lot, but a joyful observation nonetheless. I can't really say much here since this game isn't fully done so expect edits as the episodes come along. No spoilers also. I respect the curiosity of the review lurkers here. EPISODE 1 REVIEW: This game starts off with a bang and keeps it going. Never clocked the 90s anime art style inspiration initially but knowing that makes the game better in my eyes, especially when you play the minigames before and during the trial. The only one I didn't like was the space invaders inspired one but I've that it's getting reworked into something more interesting, so that's cool and pretty neat that Jane Mango listened to the community in that way. The music is superb, especially the War of Words music. Sound design is equally as great. The art, as someone who isn't good at art, is pretty nice; as a writer, the art works narratively. Speaking of the narrative (again, no spoilers) and writing was pretty solid, only getting accentuated by the AMAZING voice actors. I remember genuinely feeling something when a character would yell or feel devastated. Even purely angry characters like Ishikame (Absolute Solider) feel like there's something behind it as opposed to "he's angry because he is". I didn't break down crying, but I felt myself almost tearing up, which--as someone as isn't as in tune with his emotions than others--is a BIG compliment. This first episode feels like the team over at Mango Factory looked at what made Danganronpa good, what the games could have improved upon, and delivered on an excellent product that--as of right now--trumps any other game like it. It's like a fangame that got so big it became it's own thing, which is good; great, even. Highly recommend if you have the time!
this game may only have one chapter right now omg its so good im crying, sobbing, eating my tears even im going to be very happy for chapter two
pirated this a few weeks ago while i was sick/down bad and played through the first episode. it was great, helped me not focus on how bad my body hurt. 10/10 , loved it so much had to buy it when i got a few dollars.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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