HomeKumitantei: Old-School Slaughter
Kumitantei: Old-School Slaughter
Mango Factory · published by Akupara Games · released Apr 23, 2026 · demo · data updated Oct 24, 2026
by Mango Factory, published by Akupara Games
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
Released Apr 23, 2026 · Demo available
Steam figures
| Value | As of | |
|---|---|---|
| Steam reviews | Very Positive · 90% positive of 324 Steam reviews | Oct 23, 2026 |
| Followers on Steam | No followers data for this game yet | |
| Regular US price | $14.99 | Oct 19, 2026 |
| Twitch peak viewers | 4 | Oct 23, 2026 |
New Steam reviews per week
| Week | New positive | New negative |
|---|---|---|
| Week of Apr 23, 2026 | 126 | 19 |
| Week of Apr 30, 2026 | 50 | 4 |
| Week of May 7, 2026 | 22 | 5 |
| Week of May 14, 2026 | 10 | 3 |
| Week of May 21, 2026 | 7 | 1 |
| Week of May 28, 2026 | 6 | 0 |
| Week of Jun 4, 2026 | 5 | 0 |
| Week of Jun 11, 2026 | 2 | 0 |
| Week of Jun 18, 2026 | 8 | 1 |
| Week of Jun 25, 2026 | 5 | 0 |
| Week of Jul 2, 2026 | 5 | 0 |
| Week of Jul 9, 2026 | 6 | 0 |
| Week of Jul 16, 2026 | 4 | 0 |
| Week of Jul 23, 2026 | 3 | 1 |
| Week of Jul 30, 2026 | 7 | 0 |
| Week of Aug 6, 2026 | 5 | 0 |
| Week of Aug 13, 2026 | 2 | 1 |
| Week of Aug 20, 2026 | 1 | 1 |
| Week of Aug 27, 2026 | 2 | 2 |
| Week of Sep 3, 2026 | 3 | 0 |
| Week of Sep 10, 2026 | 5 | 1 |
| Week of Sep 17, 2026 | 1 | 0 |
| Week of Sep 24, 2026 | 2 | 0 |
| Week of Oct 1, 2026 | 2 | 0 |
| Week of Oct 8, 2026 | 3 | 0 |
| Week of Oct 15, 2026 | 1 | 0 |
Sales estimate
| Copies sold on Steam | 5.8k – 34k | |
|---|---|---|
| Gross revenue on Steam | $77k – $260k before refunds, tax and Steam’s cut | |
| Steam reviews by buyers | 324 | Oct 23, 2026 |
| Copies per review | 18–103 |
Estimates are based on an aggregation of industry-accepted conversion formulas. How this is estimated
Tag DNA
| Tag | Share of Steam games |
|---|---|
| Alternate History | 1 in 65 games |
| Card Battler | 1 in 44 games |
| 1980s | 1 in 40 games |
| Detective | 1 in 38 games |
| Dark Humor | 1 in 37 games |
| Comedy | 1 in 13 games |
| Visual Novel | 1 in 12 games |
| Mystery | 1 in 12 games |
Games like Kumitantei: Old-School Slaughter
| Game | Developer | Match | Steam reviews |
|---|---|---|---|
| Love, Internet, and Murder Magic | Renka | 69% | Mostly Positive · 219 |
| All in Abyss: Judge the Fake | ACQUIRE Corp., WSS playground | 65% | Mixed · 383 |
| 转生成为史莱姆的我变成了美少女的宠物 | 百合赛高 | 70% | Mixed · 14 |
| Planet Stronghold: Colonial Defense | Winter Wolves | 67% | Mostly Positive · 31 |
| Whispers Of Yashan | Nightales Studio | 68% | |
| Hero.EXE | Mystery Egg Games | 67% | |
| Sun Halo | Renka | 65% | Very Positive · 61 |
| Evil's Veil | Glasscup | 66% |