Lost Ark is a free to play MMO from Smilegate RPG and Amazon Games that was previously blocked on Linux platforms like SteamOS / Steam Deck but now works.
Quite a surprise. 1047 Games recently launched the free to play Splitgate 2 in Beta on Steam, initially with their anti-cheat RedKard blocking Desktop Linux but allowing the Steam Deck with SteamOS. Now they've tweaked it to allow Desktop Linux players in.
Sometime in 2024 a publisher called BD Games was banned from Steam, taking with it numerous smaller games. Bioprototype from Emprom Game recently returned to Steam without a publisher, and it's free to claim and keep for a while.
Splitgate 2 brings back the free to play FPS with portals from 1047 Games, with a Beta now available. However, it's another game that will not work on Desktop Linux, only the Steam Deck.
Steel Swarm: APOCALYPSE is an upcoming tank-battling MOBA that I'm pretty excited about for the huge battles and map destruction. And now the developer has revealed it's set to release in Early Access on June 24th.
Beyond All Reason is an incredibly impressive free and open source RTS, with The Lightbringer update out now that's a huge advancement for the visuals. If you love massive battles you need to play this one.
Act fast if you want a brand new free game, as Nubs! Arena from ex-Awesomenauts developers has released and it's free for the first 24 hours. This is not a free trial, it's free to keep if you add it to your account within the time limit.