Valve is making a notable shift with its portable gaming strategy as Lenovo debuted a new edition of its Legion Go gaming handheld that runs Valve’s custom operating system.

Lenovo has finally announced a new line of Legion Go handheld PCs, with one that will come installed with SteamOS out of the box. The new model is called the Legion Go S, and it's the world's first handheld PC from a third-party manufacturer using Valve's operating system.

Lenovo has announced two new iterations on the Legion Go, a PC gaming handheld it released in October 2023. The Legion Go 2 will be a beefier—and likely pricier—version of Lenovo's first-generation device,

Lenovo's Legion Go S is the first third-party handheld PC to come with SteamOS out of the box, heralding a new era in PC gaming-the one where Windows might become increasingly optional. The Legion Go S boasts AMD's exclusive Z2 Go processor and Zen 3 architecture,

Valve will begin allowing third-party handhelds to license SteamOS starting with Lenovo's new Legion Go S. At CES 2025, Lenovo announced that it will ship a version of its upcoming Legion Go S handheld called the "Powered by SteamOS" that will run,

SteamOS is the same operating system we run on Steam Deck, and the team is making updates to ensure it fully supports the Lenovo Legion Go S and provides the same seamless experience customers expect.