SteamOS Debuts on Non-Valve Platform

Lenovo's Legion Go S: The First Third-Party SteamOS Handheld

Lenovo has unveiled the Legion Go S, a groundbreaking handheld gaming PC, marking the first third-party device to ship with Valve's SteamOS. This collaboration expands SteamOS beyond its original home on the Steam Deck.

The Legion Go S, priced at $499, will launch in May 2025 with a 16GB RAM/512GB storage configuration. This SteamOS version offers a streamlined, console-like experience, leveraging the advantages of a Linux-based OS optimized for handheld gaming, unlike the Windows-based competitors such as the Asus ROG Ally X and MSI Claw 8 AI+. Valve has been actively working towards third-party SteamOS adoption for several years, and the Legion Go S represents a significant milestone.

Initially leaked, the Legion Go S's SteamOS variant was officially confirmed at CES 2025. Lenovo also announced the Legion Go 2, a higher-end model, but it will not initially launch with SteamOS. The Legion Go S's smaller, lighter form factor provides a compelling alternative to the original Legion Go.

Lenovo Legion Go S Specifications:

SteamOS Version:

• Operating System: Valve's SteamOS
• Launch Date: May 2025
• Price: $499
• Specifications: 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)

Valve guarantees feature parity between the SteamOS version of the Legion Go S and the Steam Deck, ensuring identical software updates (excluding hardware-specific adjustments). A Windows 11 version will also be available, offering a more familiar operating system at a higher price point. Future SteamOS availability on the Legion Go 2 depends on the success of the Legion Go S.

Currently, Lenovo holds the exclusive partnership with Valve for a licensed SteamOS device. However, Valve's announcement of a public SteamOS beta for other handhelds in the coming months suggests broader accessibility is on the horizon.