The Steam Deck runs on Steam OS, which is Linux, and that will complicate ray tracing a bit. Doom Eternal is the first supported game because it uses the Vulkan graphics API for ray tracing.

DOOM: The Dark Ages is an incredibly demanding game, but it can technically run on Steam Deck with some tweaks.

Can the Steam Deck handle Doom: The Dark Ages? Discover performance insights, frame rate struggles, and optimization tips for gaming on the ...

A Doom Eternal mod support portal could be on the way from id Software, after changes to the FPS game's Steam backend point to it directly.

Doom Eternal's new mod support is currently available on Steam and is coming soon to the Microsoft Store, although the idStudio tools themselves are only on Steam.

Best Doom The Dark Ages settings for PC and Steam Deck Despite some demanding system requirements, Doom The Dark Ages runs great on PC in our tests, and it even runs on Valve's handheld too.