SteamOS Is Officially Launching on a System That\'s Not By Valve

Lenovo Legion Go S: SteamOS Arrives on a Third-Party Handheld

Lenovo's upcoming Legion Go S gaming handheld will mark a significant milestone: it's the first non-Valve device to launch with Valve's SteamOS pre-installed. This expansion of SteamOS beyond the Steam Deck has been a long time coming, and the Legion Go S is the culmination of that effort.

Priced at $499, the SteamOS version of the Lenovo Legion Go S will debut in May 2025. This offers a compelling alternative to competing handheld gaming PCs like the Asus ROG Ally X and MSI Claw 8 AI+, which run Windows. SteamOS, with its Linux base, provides a smoother, more console-like experience optimized for portable gaming, a key advantage over the less optimized Windows experience on competing devices.

Initially leaked, the Legion Go S's SteamOS variant was officially unveiled at CES 2025. Lenovo also announced the Legion Go 2, a direct successor to the original Legion Go, alongside the more compact and lighter Legion Go S. The availability of a SteamOS option significantly broadens consumer choice within the handheld gaming market.

Lenovo Legion Go S Specifications:

SteamOS Version:

• Operating System: Valve's SteamOS (Linux-based)
• Launch Date: May 2025
• Price: $499
• Configuration: 16GB RAM / 512GB storage

Windows Version:

• Operating System: Windows 11
• Launch Date: January 2025
• Price: $599 (16GB RAM / 1TB storage), $729 (32GB RAM / 1TB storage)

The $499 SteamOS Legion Go S (16GB RAM / 512GB storage) guarantees full feature parity with the Steam Deck, receiving identical software updates (excluding hardware-specific adjustments). For users preferring Windows, a Windows 11 version will be available starting in January 2025.

Currently, Lenovo holds the exclusive license for a SteamOS-powered handheld from Valve. However, Valve's announcement of a public SteamOS beta for other handhelds (like the Asus ROG Ally) in the coming months suggests broader compatibility is on the horizon. Whether Lenovo's flagship Legion Go 2 will eventually adopt SteamOS remains dependent on the success of the Legion Go S's SteamOS variant.