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Valve releases the Steam Deck OLED with up to 1TB storage
(store.steampowered.com)
Steam is a video game digital distribution service by Valve.
Steam News | Steam Beta Client news
Useful tools:
SteamDB
SteamCharts
Issue tracker for Linux version of Steam
Pretty much everything but some online multiplayer games. Destiny, COD, and a few others use this anticheat that's not compatible.
But virtually everything else, yes.