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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.

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Mandemon

#2497610

Decaying Japanese school buildings, a series of bizarre incidents, eerie Mandemon legends. Lies and truths intertwine, love and hate entwined in the mist. What should one do? Whom should one believe? Welcome to this cruel world filled with deception and harm —

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Recommendation

ProtonGreat

↻Needs confirmationLow confidence

Only Proton reports exist so far.

Last report Oct 10, 2025

Compatibility

Proton

Great

↻Needs confirmationLow confidence

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

NativeAvailable

Native Linux build · no reports yet

Report the native build →

Anti-cheatUnknown

No anti-cheat reports yet

Reports(3)

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Most of this is historical ProtonDB data (newest from Oct 10, 2025) and needs a fresh report to confirm it still holds.

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PathDeviceFreshness

Showing 3 of 3 reports

GreatProtonDesktopHistorical
Oct 10, 2025
GreatProtonDesktopHistorical
Apr 8, 2024
GreatProtonDesktopHistorical
Aug 6, 2023

End of reports