Anyone remember the original Stronghold from FireFly Studios? Well, there's an open source remake named Stone Kingdoms.
0 A.D. is an in-development free and open source RTS, one that's very promising and looks pretty good and the next Alpha version will also feature experimental Vulkan support.
What might seem like a pixel-art Age of Empires on the surface, the RTS game TFC: The Fertile Crescent is much more than that and they recently released a major update for the game.
Beyond All Reason is an in-development free and open source RTS, based on the SpringRTS game engine and their latest update showcases just how great it looks.
OpenRA is one of my absolute favourite open source projects allowing you to play the Westwood classics like Command & Conquer, Dune 2000 and Red Alert has a new Playtest up over a year after the last release.
Rusted Warfare is a great RTS for people who love the classics. One I discovered years ago on Android and then it later had a PC release. A big new release version 1.15 adds in loads to it.
Easily one of the best open source games around, Mindustry from AnukenDev just had a MASSIVE new release out that took quite some time to make.
Combining elements and being inspired by the likes of FTL and Total War, Winter Falling: Battle Tactics is a pretty unique strategy game.
The free and open source RTS Warzone 2100 has a new release out, bringing with it a new difficulty mode if you struggled through the campaign.
Anyone else remember Dark Reign: The Future of War? Released back in 1997, it's a real classic and at the time it had some pretty favourable reviews too. The good news is that it's being rebuilt by fans using OpenRA.
Here's a "fun" one for you. The developers behind the free and open source RTS named 0 A.D. (pronounced “zero-ey-dee”) have announced that someone (they don't know who) has put it up on Steam.
0 A.D., an in-development free and open source real-time strategy game has a big new release out with Alpha 26.
TFC: The Fertile Crescent is a really criminally overlooked pixel-art RTS that just got a major upgrade for all players.
Necrosmith is a roguelike real-time strategy management game. You create minions and release them to scout your surroundings, defend your castle, gather loot, and destroy enemy lairs.
Radio General - Water Rats is the first paid expansion for the positively rated unique strategy game, where you call the orders over your microphone.
THQ Nordic, 3D Realms and Slipgate Ironworks recently revealed Tempest Rising an upcoming classic RTS and after watching the trailer I absolutely need this.
A little castle building and AI conquering on the go? Kingdoms and Castles already worked great on Linux with the Native version and now it should be great on the Steam Deck too.
TFC: The Fertile Crescent is a pixel-art RTS that resembles some of the classics like Age of Empires. It's currently in Early Access with Native Linux support and their new roadmap looks great.
While first person shooters dominated the Linux gaming scene in the late 1990s and early 2000s, there was still more than a place for the venerable strategy genre, with Ubi Soft entering the fray thanks to the work of Linux friendly Philos Laboratories.
It's finally here! The huge AI Kingdoms update for Kingdoms and Castles has now landed, greatly expanding this wonderful city-builder with more strategy elements.