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.
- Price:$14.99
- Release Date:4/23/2026
- Franchise:Mango Factory LLC
- Developers:
- Publishers:
- Last Updated:5/8/2026
- Steam App Id:2759280
Kumitantei: Old-School Slaughter
- Windows
- Mac
- Linux
- Steam Deck (Verified)
Steam Charts, Stats, and Live Player Count
At the moment, Kumitantei: Old-School Slaughter has 21 concurrent players online and in-game. This is 89% lower than its previous all-time peak of 188 players achieved on 4/24/2026.
Review History Chart
Track historical review trends and overall ratings for Kumitantei: Old-School Slaughter. It has received a total of 243 reviews on the Steam store and achieved a Player Score of 84 (Very Positive).
Price History Chart
Track historical price changes and trends for Kumitantei: Old-School Slaughter. Right now, it costs $14.99 in the Steam Store.
Community Hub Members & Followers Chart
Explore the cumulative breakdown of Steam community hub members for Kumitantei: Old-School Slaughter and its growth over time. It currently has 695 followers on its community page.
About Kumitantei: Old-School Slaughter
Kumitantei: Old-School Slaughter is an Indie, Adventure, Action, and RPG game developed by Mango Factory, Mango Factory Ltd., and Mango Factory LLC. On 4/23/2026, it was released on the Steam Store by Mango Factory Ltd., Akupara Games, and Mango Factory LLC.
Players have rated Kumitantei: Old-School Slaughter as "Very Positive" out of 243 total reviews on the Steam Store. These are split between 223 positive reviews and 20 negative reviews — an overall 92% positive review rating.
It is available for gamers to download and play for $14.99. It can also be purchased through RUBATANTEI which gives a discount off its base price.
It can be played and ran on Windows systems. It is verified by Valve as playable on the Steam Deck and will run well.
According to Steam’s category system, Kumitantei: Old-School Slaughter supports the following features:
- Full controller support
- Steam Achievements
- Single-player
- Family Sharing
- Steam Trading Cards
- Captions available
- Custom Volume Controls
- Adjustable Difficulty
- Steam Cloud
- Save Anytime
- Partial Controller Support
From the Steam community, Kumitantei: Old-School Slaughter has been tagged with the following user tags:
- Multiple Endings
- Visual Novel
- Deckbuilding
- RPG
- Dark Humor
- Comedy
- Psychological Horror
- Retro
- Mystery
- 1980s
- Horror
- Cute
- Detective
- Card Battler
- Anime
- Alternate History
- Adventure
- Female Protagonist
- Singleplayer
- Memes
Media & Sceenshots
Watch the featured video for Kumitantei: Old-School Slaughter and see the latest screenshots from the Steam Store.
DLC & Related Apps
Kumitantei: Old-School Slaughter is referenced by 1 other related app in the Steam Store.
| Image | Name | Type | Release Date | Actions |
|---|---|---|---|---|
 | Kumitantei: Old-School Slaughter Original Soundtrack | Music | 4/23/2026 | View |
Related Bundles
Kumitantei: Old-School Slaughter is included in 1 bundle in the Steam Store.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | RUBATANTEI | 1 | 2 | $30.13 | View |
Related Packages
Kumitantei: Old-School Slaughter is referenced by 1 package in the Steam Store.
| Name | Price | Actions |
|---|---|---|
| Kumitantei: Old-School Slaughter | $13.49 | View |
Supported Languages
Kumitantei: Old-School Slaughter is available in 4 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | Yes | Yes |
| Spanish (Spain) | Yes | No | Yes |
| Japanese | Yes | No | Yes |
| Chinese (Simplified) | Yes | No | Yes |
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in realtime to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
Kumitantei: Old-School Slaughter data has been sourced from:
- Valve Corporation. (2026, May 8). Kumitantei: Old-School Slaughter on Steam. Steam Store. https://store.steampowered.com/app/2759280
- Valve Corporation. (2026, May 8). Kumitantei: Old-School Slaughter. Steam Community Hub. https://steamcommunity.com/app/2759280
- Mango Factory. (2024, January 4). Kumitantei: Old-School Slaughter. Kumitantei: Old-School Slaughter. https://www.kumitantei.com