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The modern compatibility index for Steam games on Linux.

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Protondex is an independent community compatibility index and is not affiliated with Valve, Steam, Proton, CodeWeavers, or ProtonDB.

Some historical compatibility records originate from ProtonDB's data export under the Open Database License (ODbL) v1.0; Protondex publishes a periodic public dump of its compatibility database under the same license. View the ODbL.

Unboxing the Cryptic Killer · Protondex

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Unboxing the Cryptic Killer

#2069040

Unravel the mystery of a cryptic box in this 2-player co-op puzzle game. Join forces as two detectives, solve cooperative puzzles, communicate effectively, crack the codes and outsmart the killer.

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Recommendation

ProtonGreat

Only Proton reports exist so far.

Compatibility

Proton

Great

!StaleLow confidence

4 reports · Low confidence: very few recent reports yet.

NativeNone

No native Linux build — Proton only

Desktop

Great

!StaleLow confidence

4 reports · Low confidence: very few recent reports yet.

HandheldUnknown

No reports yet

Anti-cheatUnknown

No anti-cheat reports yet

Summary based mostly on historical data from ProtonDB. Fresh reports from your setup help keep it current.

Freshness:!Stale4 reports · last updated Jun 4, 2025

The newest report is over a year old — compatibility may have changed since.

Guide cards

No guide cards yet — curated troubleshooting for Unboxing the Cryptic Killer will appear here.

Reports (4)

PathOutcomeDeviceFreshnessAnti-cheat

4 of 4 reports

GreatProtonDesktopHistorical · ProtonDB
Jun 4, 2025
Imported from ProtonDB (ODbL)
GreatProtonDesktopHistorical · ProtonDB
Jun 14, 2024
Imported from ProtonDB (ODbL)
GreatProtonDesktopHistorical · ProtonDB
Jul 4, 2023
Imported from ProtonDB (ODbL)
ReadyProtonDesktopHistorical · ProtonDB
Apr 29, 2023
Imported from ProtonDB (ODbL)