Old World is a new Native Linux historical strategy game from Soren Johnson, Lead Designer of Civilization IV and Offworld Trading Company and Mohawk Games.
Taken at face value, you could easily think that Kaiju Wars was close to Into the Breach but after playing it, I can safely tell you it's a whole lot more than that.
Curiously, it seems Proton 7 and Proton Experimental are having problems with Unity games recently but there's a possible temporary workaround for you.
Unity Technologies have announced their next big example game for other developers to learn from. It's called Gigaya and it actually looks pretty great.
If you need another MMO fix in your life, Albion Online is pretty good and has a lot of players. It's available as a direct standalone download and on Steam. Looks like it might end up quite good on the Steam Deck.
Superliminal, the brilliant puzzle game where your perspective changes the size of things you hold to progress recently gained some multiplayer modes - and now they're on Linux too.
Sent in by a reader a while ago and one I've been meaning to try out properly, Super Auto Pets is a free to play auto-battler from Team Wood Games that's delightfully good.
Time to go back to Earth and retake it. Beyond Mankind: The Awakening from developer Brytenwalda recently released a native Linux version, built with the Unity game engine.
Do you have experience with the Unity game engine? Well, Daniel Mullins Games are hiring to continue future development of Inscryption and the job description looked pretty interesting.
Love space sci-fi and roguelikes? Relic Space blends them together and it's really beginning to look like a game that's going to steal endless hours away from me.