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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.

B-12 · Protondex

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B-12

#616640

B-12 is a tough, third/first-person action-platformer with randomized levels and relentless robots with plasma cannons for hands.

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Recommendation

ProtonGreat

Only Proton reports exist so far.

Compatibility

Proton

Great

!StaleLow confidence

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

NativeNone

No native Linux build — Proton only

Desktop

Great

!StaleLow confidence

3 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:!Stale3 reports · last updated Apr 15, 2025

The newest report is over a year old — compatibility may have changed since.

Guide cards

No guide cards yet — curated troubleshooting for B-12 will appear here.

Reports (3)

PathOutcomeDeviceFreshnessAnti-cheat

3 of 3 reports

GreatProtonDesktopHistorical · ProtonDB
Apr 15, 2025
Imported from ProtonDB (ODbL)
TinkerProtonDesktopHistorical · ProtonDB
Jul 16, 2022
Imported from ProtonDB (ODbL)
GreatProtonDesktopHistorical · ProtonDB
Jul 25, 2021
Imported from ProtonDB (ODbL)