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Roboquest Proton Experimental

A new Proton Experimental update was released yesterday with a couple of updates for games and the Epic Games Store launcher. Video playback has been fixed in Roboquest, Teardown won't hang when you publish a mod to the workshop, you can send feedback in Cosmoteer again, and the Epic Games Store will now launch again when using Proton.

The new Proton Experimental update should automatically download if you already have the experimental layer. If not, just search for Proton Experimental in the Steam store on your Steam Deck and download.

Proton Experimental 7/12/25 Update Changelog:

  • Fixed experimental regressions:
    • RiME should no longer exhibit weird windowing behavior when Alt+Tabbing on certain setups.
  • Fixed intro video in Warhammer 40,000: Dakka Squadron - Flyboyz Edition having no audio.
  • Fixed Warrior Maiden Lecia and the Lost Fortress hanging on exit.
  • Fixed video playback in Roboquest.
  • Fixed sending feedback not working in Cosmoteer: Starship Architect & Commander.
  • Fixed Teardown hanging when publishing a mod to the workshop.
  • Fixed a recent update causing Epic Games Store not launching under Proton.

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Noah Kupetsky
A lover of gaming since 4, Noah has grown up with a love and passion for the industry. From there, he started to travel a lot and develop a joy for handheld and PC gaming. When the Steam Deck released, it just all clicked.
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