Valve testing ALL Steam games for Steam Deck compatibility

Valve is currently testing all Steam games to see which are compatible with the Steam Deck, publishes findings in public database.

Steam Deck Compatibility Review Process (Steamworks Documentation)

Steam Community :: Guide :: Steam Deck Controller Guide - A Visual Introduction

How to Use Valve's Steam Deck: Tips on Setup, Controls, and More

Steam Deck: How to check and see if your games library is supported

How to check a game's Steam Deck compatibility - Reviewed

Valve Steam Deck review: A great start for portable PC gaming

Scan your library for Steam Deck Compatibility using this official tool

The 30 best Steam Deck games

For Linux Enthusiasts Especially, The Steam Deck Is An Incredible & Fun Device - Phoronix

Valve Steam Deck Review: Glitchy but Promising

Steam Deck :: Deck Verified

Steam Deck review: The Nintendo Switch for adults