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:$13.49
- Release Date:4/23/2026
- Franchise:Mango Factory LLC
- Developers:
- Publishers:
- Last Updated:4/25/2026
- 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 100 concurrent players online and in-game. This is 47% lower than its previous all-time peak of 188 players achieved on 4/24/2026.
Kumitantei: Old-School Slaughter Review
Kumitantei: Old-School Slaughter has achieved a Steambase Player Score of 88 / 100. This score is calculated from 86 total reviews on the Steam store — giving it a Very Positive rating. These are split between 76 positive reviews, 10 negative reviews, and will be updated in real-time as more players leave their feedback.
Track historical reviews and overall rating trends for Kumitantei: Old-School Slaughter using the chart below.
Kumitantei: Old-School Slaughter Price
Kumitantei: Old-School Slaughter costs $13.49 in the Steam store as of 4/25/2026 which is a 10% discount off its base price. It can be purchased as a standalone game or through a bundle like RUBATANTEI which offers 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.
Kumitantei: Old-School Slaughter Deals & Discounts
Discover exclusive deals and unbeatable discounts for Kumitantei: Old-School Slaughter through our partner marketplaces. Get a large discount (sometimes 80% off) by purchasing your Steam key through them.
We only work with the best and most-trusted marketplaces to ensure a smooth experience. After purchase, you will immediately receive your Steam key and game activation code. Take advantage of these offers and dive into the world of Kumitantei: Old-School Slaughter without hurting your wallet.
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Kumitantei: Old-School Slaughter DLC
Kumitantei: Old-School Slaughter has 1 related app available for download from the Steam store.
| Image | Name | Type | Release Date | Actions |
|---|---|---|---|---|
 | Kumitantei: Old-School Slaughter Original Soundtrack | Music | 4/23/2026 | View |
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.
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:
- Steam Cloud
- Steam Achievements
- Full controller support
- Single-player
- Family Sharing
- Custom Volume Controls
- Captions available
- Steam Trading Cards
- Save Anytime
- Adjustable Difficulty
- 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.
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 |
More Steam Charts
Track historical trends for Kumitantei: Old-School Slaughter community hub members and its growth over time. It currently has 695 followers in its community.
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 real-time 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, April 25). Kumitantei: Old-School Slaughter on Steam. Steam Store. https://store.steampowered.com/app/2759280
- Valve Corporation. (2026, April 25). 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