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Kumitantei: Old-School Slaughter cover art

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.

Steam SteamDB
Game Stats
Release Apr 23, 2026
Price $14.99
Reviews 92% (329)
Avg CCU 0
Copies Sold 9,870
Revenue Est. $93K
Identity
Genres
Adventure Indie RPG
Developers
Mango Factory
Publishers
Akupara Games
Media
Classification
Tags
1980s Adventure Alternate History Anime Card Battler Comedy Cute Dark Humor Deckbuilding Detective Female Protagonist Horror Memes Multiple Endings Mystery Psychological Horror RPG Retro Singleplayer Visual Novel
Categories
Adjustable Difficulty Custom Volume Controls DualSense Controller Support DualShock Controller Support Family Sharing Full controller support Save Anytime Single-player Steam Achievements Steam Cloud Steam Trading Cards
Languages
English Spanish - Spain Japanese Simplified Chinese
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