OpenRA

Dark Reign narrowly beat Total Annihilation as the first RTS to incorporate 3D movement and positioning. This increases the strategic advantage of hills and mountains. Each mission puts you in the role of commander of either the Imperial army or the Freedom fighters in a campaign to undermine and eventually destroy the opposing force. This game has many unusual features for the RTS genre. AI patterns you to simply give a unit the order "Search and Destroy" and it would drive off towards the enemy's last known location, in search for something to kill. There is also "explore" mode which let your units do all the map exploring for you. A mission/campaign editor is also provided.

Terminator: Dark Fate – Defiance is a gritty RTS that puts you in the middle of the Future Wars between humanity and Legion's synthetic intelligent machine network. Take command and lead your army to foil Legion's plan to destroy humanity or play as one of three factions in skirmish and multiplayer.

Greatly expanding on the groundwork laid out by the first game, Battlefleet Gothic: Armada 2 is a full-blown sequel: bigger, richer, and more ambitious than the original game. At launch, it will include all 12 factions from the original tabletop game and its expansion Armada it is based on: the Imperial Navy, Space Marines, Adeptus Mechanicus, Necrons, Chaos, Aeldari Corsairs, Aeldari Craftworld, Drukhari, the T’au Merchant and Protector Fleets, Orks, and finally, the Tyranids. The latest dramatic story development in the Warhammer 40,000 universe, the Gathering Storm and the 13th Black Crusade, will serve as the canvas for several extensive and dynamic campaigns. With bigger battles, refined gameplay, improved multiplayer modes and features for a better and more balanced online experience, and even more customization options for fleets and ships, Battlefleet Gothic: Armada 2 promises to be the ultimate Warhammer 40,000 space battle experience.

A starship builder perfect for fans of games like FTL, Starsector, SPAZ, Space Engineers, Escape Velocity, Avorion, and more. Design awesome starships using intuitive ship creation tools that are easy to learn but hard to master. Fully customize your ship's shape and floor plan, choosing where to place individual modules including weapons, engines, hallways, and crew's quarters. Your ship's design is key to its survival, and every decision you make will impact its performance in battle.

Distant Worlds: Universe is the newest chapter of this critically acclaimed sci-fi series, adding incredible new features and an exciting new storyline. Universe is also the ultimate collector’s edition, the first time all previous Distant Worlds releases have been included in one package, along with an updated manual and greatly expanded modding support. Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game. The Universe is Yours!

Before you can find your Homeworld, you must first unlock the secrets of the desert. Blackbird Interactive and Gearbox Software invite you to visit the deserts of Kharak in this new Homeworld story, where danger lurks behind every dune. Homeworld: Deserts of Kharak is set for release on January 20th on Windows PC. The planet is dying, but deep in the southern sands of Kharak, an anomaly has been discovered. Could Kharak’s salvation lie in the desert? Led by chief science officer Rachel S’jet, the Coalition of the Northern Kiithid sends an expedition deep within enemy-controlled territory to investigate the finding, which could forever alter the fate of humanity.

Rusted Warfare is a 2D RTS game in the vein of Total Annihilation featuring large armies and a pixel art style.

The second title in the Galaxy Online series by IGG.

Set in the 24th century, a group of unsuspecting colonies are attacked by a swarm of aliens who want to preserve their race. Now it's up to you to save the colonists and stop the aliens from taking over the planet. Enemy Infestation is a squad-based RTS similar to games like Gender Wars and Commandos. The game is seen from an isometric view similar to Diablo and Crusader. Game missions range from killing off all the aliens, saving colonists and alot more. Players will have the ability to modify their squads weapons, which range from lasers to missile launchers. The game supports multiplayer up to 4 players on LAN and Internet. It even supports single player co-op.

I of the Enemy (IOE) is a unique experience of sci-fi wargaming and innovative gameplay for single player offline or up to 8 opponents battling over the internet or a LAN.