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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.

Flat Heroes · Protondex

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Flat Heroes

#508790

Dodge, jump, and dash your way through hundreds of terrifying geometric levels and epic bosses. Too tough? Bring your friends!

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Recommendation

Native (Linux build)Great

Proton and native both rate great; recommending native.

Compatibility

Proton

Great

!StaleLow confidence

1 report · Low confidence: all reports predate a major ecosystem update.

Native

Great

↻Needs confirmationLow confidence

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

Desktop

Great

↻Needs confirmationLow confidence

2 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 confirmation2 reports · last updated Oct 20, 2025

Guide cards

No guide cards yet — curated troubleshooting for Flat Heroes will appear here.

Reports (2)

PathOutcomeDeviceFreshnessAnti-cheat

2 of 2 reports

GreatNative (Linux build)DesktopHistorical · ProtonDB
Oct 20, 2025
Imported from ProtonDB (ODbL)
GreatProtonDesktopHistorical · ProtonDB
Jul 5, 2022
Imported from ProtonDB (ODbL)