Unity has revealed plans to integrate official Steam support into its game engine, aiming for better native performance on Linux devices like the Steam Deck and the upcoming Steam Machine. The announcement was made during the GDC 2026 Product Update. This move seeks to reduce reliance on Valve's Proton compatibility layer.
During its GDC 2026 Product Update, Unity announced that official Steam support is "coming soon" for the engine. This includes targeted enhancements for Valve's hardware, specifically the Steam Deck handheld and the Steam Machine mini PC, both running on the Linux-based SteamOS. The initiative aims to provide native Linux performance, making it easier for developers to publish games to Steam without manual integration of Steamworks.
James Stone, from Unity's Platforms Team, explained in the presentation: "We’re bringing official Steam support into Unity. Now, I know you’ll say ‘But I already ship games to Steam’ – and that’s true. Thousands of developers have had success on Steam with Unity. The thing is, prior to Platform Toolkit, we’ve never actually officially supported Steam in the past. It’s always been up to developers to integrate Steamworks themselves and publish and support their titles on that platform historically."
Stone highlighted the limitations of Proton, stating: "And on Steam Deck, many of you have been finding success with Proton. But I think we can do better with a native solution... As great as Proton is, it’s simply something we don’t have any degree of control over or ability to support." Unity has already implemented native improvements to its Linux player targeting Steam Deck hardware, which are available now and offer potential performance gains over Proton-based builds.
The enhancements extend to build targets for Steam, Steam Deck, and the upcoming Steam Machine, set to launch in 2026. Unity plans to make targeted improvements to its Linux runtime to boost native performance and simplify the publishing process. While the Steam Frame VR headset also uses SteamOS, Unity's focus appears to be on the x86-based Deck and Machine, not the ARM64 architecture of the headset.
This development is expected to benefit Linux gaming by encouraging more native Unity titles, easing developer workflows with integrated Steam support.
