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Kumitantei: Old-School Slaughter
#2759280Kill 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.
Recommendation
ProtonGreat
CurrentMedium confidence
Only Proton reports exist so far.
Last report May 6, 2026
Compatibility
Proton
Great
CurrentMedium confidence
3 reports · Medium confidence: more recent reports would firm this up.
NativeNone
No native Linux build — Proton only
Anti-cheatUnknown
No anti-cheat reports yet
Reports(3)
Most reports here are historical ProtonDB imports — be the first to add a fresh Kumitantei: Old-School Slaughter report.
Add a fresh reportShowing 3 of 3 reports
- GreatProtonDesktopHistoricalMay 6, 2026
- GreatProtonDesktopHistoricalMay 5, 2026
- GreatProtonDesktopHistoricalMay 3, 2026
End of reports