Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
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No game lists Sins of a Solar Empire II as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
Build a planetary empire, research game-changing tech, and raid real players across a persistent galaxy. The classic browser space strategy, reborn - and finally fair: no pay-to-win, ever. Team up for 8-fleet combined attacks. Your mines keep working while you sleep.
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Tactical, beautiful, and wholly unique, the GOTY-winning sci-fi RTS returns with Homeworld 3. Assume control and battle through fleet combat in dazzling, fully 3D space while the award-winning story unfolds on a galactic scale.
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Stardust Exile is an RTS set in the Milky Way galaxy, containing currently known stars and exoplanets with their real characteristics. The remaining star systems are procedurally generated. It has both online mode and single-player skirmish mode. The online server is persistent and single-shard.
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A deep 2D strategy of cosmic trade and faction warfare. Build trading empires, refine asteroids, lead fleets into battle and run faction politics — solo or in four-player co-op
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Engage in real-time battles with customizable space warships. Explore the galaxy, forge alliances, develop powerful ships, and defeat alien invaders.
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From the genre-defining RTS franchise Command & Conquer comes a unique, free-to-play strategic warfare MMO experience!
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The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.
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Warhammer 40,000: Dawn of War - Definitive Edition is the ultimate Dawn of War experience, featuring the original Dawn of War and all its expansions, along with enhanced visuals, an improved camera, and 64-bit platform support.
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MMO Real-time strategy star game.
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Celestis is a real-time strategy game where the goal is to take control of the procedural galaxy by capturing stars.
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