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.
Last Updated: 12/30/2025
| Release Date | 10/19/2025 |
| Franchise | Mango Factory LLC |
| Developers | |
| Publishers | |
| Steam App Id | 2759280 |
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.
Last Updated: 12/30/2025
- Windows
- Mac
- Linux
About Kumitantei: Old-School Slaughter
Kumitantei: Old-School Slaughter is an Action, Indie, RPG, and Adventure game developed by Mango Factory, Mango Factory Ltd., and Mango Factory LLC. On 10/19/2025, 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. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, Kumitantei: Old-School Slaughter supports the following features:
- Full controller support
- Steam Achievements
- Single-player
- Family Sharing
- Captions available
Media & Sceenshots
Watch the featured video for Kumitantei: Old-School Slaughter and see the latest screenshots from the Steam Store.
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Features & Categories
Frequently Asked Questions
Soures & References
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Kumitantei: Old-School Slaughter data has been sourced from:
- Valve Corporation. (2025, December 30). Kumitantei: Old-School Slaughter on Steam. Steam Store.
- Valve Corporation. (2025, December 30). Kumitantei: Old-School Slaughter. Steam Community Hub.
- Mango Factory. (2024, January 4). Kumitantei: Old-School Slaughter. Kumitantei: Old-School Slaughter.