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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.

Horripilant Demo · Protondex

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Horripilant Demo

#3771400

KILL YOUR GOD. BECOME WORTHY. Horripilant is a chilling idle incremental dungeon crawl through the horrors of a forgotten underworld.

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Recommendation

Native (Linux build)Great

Only native Linux reports exist so far.

Compatibility

ProtonUnknown

No reports yet

Native

Great

✓CurrentLow confidence

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

Desktop

Great

✓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 25, 2026

Guide cards

No guide cards yet — curated troubleshooting for Horripilant Demo will appear here.

Reports (1)

PathOutcomeDeviceFreshnessAnti-cheat

1 of 1 report

GreatNative (Linux build)DesktopHistorical · ProtonDB
Feb 25, 2026
Imported from ProtonDB (ODbL)