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The modern compatibility index for Steam games on Linux.

Steam · Linux · Proton & Native

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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.

Faehnor Online · Protondex

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Faehnor Online

#4314280

A handcrafted MMORPG developed by a solo creator, where exploration relies on real paper maps. Get lost, find your way, and set out to conquer a world that will never take you by the hand.

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Recommendation

ProtonReady

Only Proton reports exist so far.

Compatibility

Proton

Ready

✓CurrentLow confidence

1 report · Low confidence: very few recent reports yet.

NativeNone

No native Linux build — Proton only

Desktop

Ready

✓CurrentLow confidence

1 report · 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:✓Current1 report · last updated Feb 3, 2026

Guide cards

No guide cards yet — curated troubleshooting for Faehnor Online will appear here.

Reports (1)

PathOutcomeDeviceFreshnessAnti-cheat

1 of 1 report

ReadyProtonDesktopHistorical · ProtonDB
Feb 3, 2026
Imported from ProtonDB (ODbL)