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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.

Black Jacket Demo · Protondex

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Black Jacket Demo

#4100440

Gamble your way out of hell in this blackjack-inspired rogue-lite deckbuilder. Play powerful card combos or cheat to outwit your opponents and earn your freedom. Win their Soul coins! Bribe the ferryman! And uncover the story of those who stand in your way.

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Recommendation

ProtonGreat

✓CurrentLow confidence

Only Proton reports exist so far.

Last report Mar 12, 2026

Compatibility

Proton

Great

✓CurrentLow confidence

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

NativeNone

No native Linux build — Proton only

Anti-cheatUnknown

No anti-cheat reports yet

Reports(2)

Most reports here are historical ProtonDB imports — be the first to add a fresh Black Jacket Demo report.

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PathDeviceFreshness

Showing 2 of 2 reports

GreatProtonDesktopHistorical · ProtonDB
Mar 12, 2026
Imported from ProtonDB (ODbL)
GreatProtonDesktopHistorical · ProtonDB
Mar 12, 2026
Imported from ProtonDB (ODbL)

End of reports