SteamOS was always supposed to be bigger than Valve’s own Steam Deck, and 2025 is the year it finally expands. Not only will Lenovo ship the first third-party SteamOS handheld this May, Valve has now revealed it will let you install a working copy of SteamOS on other handhelds even sooner than that.

The Lenovo Legion Go S with Windows or SteamOS also joins a prototype for the Lenovo Go 2, now with controllers you can comfortably hold.

The SteamOS Legion Go S model is the most interesting of the two since it's the first non-Steam Deck handheld that utilizes Valve’s operating system. If you’ve read any of our handheld reviews, then you know Windows 11 has been a major sore spot for these systems since Microsoft’s OS doesn’t work well on these systems.