Kumitantei: Old-School Slaughter
Dev: Mango FactoryReleased: Apr 23, 2026
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.
AdventureRPGVisual NovelHorrorComedyAnimeDetectiveCard Battler1980sMysteryAlternate HistorySingleplayerDark HumorPsychological HorrorFemale ProtagonistRetroCuteMemesDeckbuildingMultiple Endings
Key Stats
CCU
1
concurrent players
Followers
1.9K
Steam followers
Players / Activity
Engagement
Steam
| Metric | Value | Change | Updated |
|---|---|---|---|
| Ccu | 1 | -85.7% | Aug 21, 04:51 AM |
| Followers | 1,863 | +5.0% | Sep 28, 01:15 PM |