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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.

IS Defense · Protondex

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IS Defense

#448370

„IS Defense” is a game set in politically-fictional 2020 – where the expansion of ISIS went out of hand. The player takes the role of NATO’s stationary machine-gun operator, deployed to defend the shores of Europe.

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Recommendation

Native (Linux build)Great

Only native Linux reports exist so far.

Compatibility

ProtonUnknown

No reports yet

Native

Great

↻Needs confirmationLow confidence

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

Desktop

Great

↻Needs confirmationLow 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:↻Needs confirmation4 reports · last updated Aug 17, 2025

Guide cards

No guide cards yet — curated troubleshooting for IS Defense will appear here.

Reports (4)

PathOutcomeDeviceFreshnessAnti-cheat

4 of 4 reports

GreatNative (Linux build)DesktopHistorical · ProtonDB
Aug 17, 2025
Imported from ProtonDB (ODbL)
GreatNative (Linux build)DesktopHistorical · ProtonDB
Sep 16, 2024
Imported from ProtonDB (ODbL)
GreatNative (Linux build)DesktopHistorical · ProtonDB
Nov 4, 2023
Imported from ProtonDB (ODbL)
GreatNative (Linux build)DesktopHistorical · ProtonDB
Mar 14, 2023
Imported from ProtonDB (ODbL)