Games Relying On CEG DRM Should Now Be Able To Run With Steam Play

Written by Michael Larabel in Linux Gaming on 29 October 2021 at 04:28 AM EDT. 10 Comments
Running the newest Steam client beta paired with the newest Proton Experimental should yield more Windows games working on Steam Play with Linux.

Valve has been busy getting more anti-cheat/DRM services working under Proton (Steam Play) ahead of the first Steam Deck devices shipping to consumers later this quarter. Their latest achievement is getting CEG DRM'ed games working, at least if you are willing to use Proton Experimental and Steam beta for the time being... About time considering Valve developed CEG (Custom Executable Generation).

This should get games like Mafia II, Hitman: Absolution, Sniper Elite V2, GRID 2, FEAR 3, Call of Duty: Modern Warfare 2, F1 Race Stars, and numerous other games now working.

More details on this improvement for games using CEG DRM via this Proton issue tracker ticket.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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