Valve has been building up to this for months, first in preview, then in beta, and now finally in a full stable release: a new version of SteamOS that brings brand-new features to the Steam Deck and supports third-party handhelds like Lenovo’s Legion Go and Asus’ ROG Ally series.

You'll soon be able to check if games will run on your third-party SteamOS gaming handheld, thanks to a new compatibility check system.

Valve has a solution for you. A big new update to SteamOS, the operating system powering handheld Steam Deck gaming devices around the world, dropped this week, and it brought with it the ability to install the specialized OS on competing devices.