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.

Verified 2026-10-22 from Steam

Store

Steam

Price

$11.99 -20% (was $14.99)

Mac

No native Mac version on Steam

Platforms

windows

Reviews

Very Positive: 90% of 323

Release

Apr 23, 2026

Developer

Mango Factory

Tags

Comedy, Anime, Visual Novel, Detective, Mystery, Card Battler, 1980s

Minimum:
OS: Windows 10 (64-bit)
Processor: 6th Gen i5/1st Gen Ryzen Series
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GTX 1050 Ti / AMD Radeon RX 570 (4GB dedicated VRAM)
DirectX: Version 12
Storage: 6 GB available space