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:5/16/2026
- 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 9 concurrent players online and in-game. This is 95% 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 285 reviews on the Steam store and achieved a Player Score of 83 (Very Positive).
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.
Kumitantei: Old-School Slaughter Price
Kumitantei: Old-School Slaughter costs $14.99 in the Steam store as of 5/16/2026. It can be purchased as a standlone game or through a bundle like Kumitantei × The Real Face of a VTuber, Absolute Paradise, Kumitantei: Old School Slaughter Deluxe Edition, or RUBATANTEI which offer a discount off the game's base price.
Explore the price history chart below to track historical price changes and other pricing stats for Kumitantei: Old-School Slaughter.
About Kumitantei: Old-School Slaughter
Kumitantei: Old-School Slaughter is an Adventure, Indie, 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 285 total reviews on the Steam Store. These are split between 259 positive reviews and 26 negative reviews — an overall 91% positive review rating.
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:
- Family Sharing
- Single-player
- Partial Controller Support
- Full controller support
- Steam Achievements
- Custom Volume Controls
- Captions available
- Save Anytime
- Adjustable Difficulty
- Steam Cloud
- Steam Trading Cards
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 4 bundles in the Steam Store.
| Image | Name | Apps | Packages | Price | Actions |
|---|---|---|---|---|---|
 | Kumitantei × The Real Face of a VTuber | 2 | 2 | $24.28 | View |
 | Absolute Paradise | 2 | 2 | $31.48 | View |
 | Kumitantei: Old School Slaughter Deluxe Edition | 2 | 2 | $22.48 | View |
 | RUBATANTEI | 2 | 2 | $31.48 | 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 16). Kumitantei: Old-School Slaughter on Steam. Steam Store. https://store.steampowered.com/app/2759280
- Valve Corporation. (2026, May 16). 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