SOFTFLIX
Kumitantei: Old-School Slaughter – cover

Kumitantei: Old-School Slaughter

  • Steam
  • RPG
  • Adventure

How to activate

  1. Install Steam and sign in to your account (a free account is enough).
  2. In the top menu choose Games → Activate a Product on Steam…
  3. Enter your key exactly as shown in your order (with dashes) and confirm. The game appears in your library.

Official Steam activation guide

About

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.

Is survival in the cards?

Kumitantei™: Old-School Slaughter is an episodic murder-mystery ADV cardbattler that lovingly fuses retro anime analog horror with killing game! Kumitantei will consist of 6 episodes, beginning to release in early 2026. ...

System Requirements

Minimum
Windows
OS
Windows 10
Processor
5th Gen i5/1st Gen Ryzen Series
Memory
4 GB RAM
Graphics
GeForce 900 Series/Radeon RX Series
DirectX
Version 12
Storage
5 GB available space
Recommended
Windows
OS
Windows 10
Processor
8th Gen i5/3rd Gen Ryzen Series
Memory
6 GB RAM
Graphics
RTX 2000 Series/Radeon Vega Series
Storage
5 GB available space
Legal information

© 2026 Mango Factory LLC. All rights reserved.

Privacy Policy