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Valve reveals new SteamOS Compatibility system for Non-Steam Decks like Legion Go S SteamOS — 18,000+ titles expected "out of the gate"

The Lenovo Legion Go S SteamOS is set to release on May 25, 2025, and will be the very first non-Valve device to officially launch with SteamOS already installed on it. Ahead of this gaming handheld's ...
The Verge

Valve will soon let you know if a game is compatible with your SteamOS device

Its new rating system will let you know if games are properly supported on third-party devices like the Legion Go S. Its new rating system will let you know if games are properly supported on ...
Engadget

Valve's new verification program will make it easy to see if a game runs on Steam Deck

Ahead of Steam Deck’s December release, Valve has detailed the compatibility program it will use to let people know if they can play their games on the portable PC. Dubbed Deck Verified, the system ...