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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No game lists Hollow Stars 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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A 4X real-time strategy game from the developers of the critically acclaimed Northgard. Set in Frank Herbert’s groundbreaking Dune universe, you must lead your faction and battle for control and dominance over the harsh desert planet of Arrakis.
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Thrive: Heavy Lies the Crown is a complex city builder, where the fate of your kingdom hinges on your every decision. Explore this medieval land alone or with friends, make tough moral choices and conquer your foes in RTS combat. Will you struggle to survive, or find the strength to Thrive?
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Turn-based grand strategy in the Age of Discovery. Develop a transport network, industrialise your economy, colonise the New World, and compete with five rival powers. Inspired by Imperialism 2. Early Access — built by one developer in his spare time.
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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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Galaxor is an online sci-fi strategy game where you build planets, research technologies, command fleets and expand your empire across the galaxy. Manage resources, join clans, take part in events and face alien threats in long-term space warfare.
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Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.
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《文明征程》是一款以历史文明为背景的策略游戏，让玩家扮演一位伟大的文明开拓者，带领自己的国家蓬勃发展。在游戏中，你将面临各种挑战和决策，需要智慧和策略来发展经济、建设城市、训练军队，同时也要与其他玩家进行外交交流和战争对抗。
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Three Kingdoms Cavalry Charge is a game that combines the historical theme of the Three Kingdoms with strategic elements. The game features a connected large-scale map design, supporting national wars with up to ten thousand players on the same map.
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In this Grand Strategy game, you take control of the Solar System's Great Powers in 2092 and weather the storm of change as you navigate the uncertain waters of the future. Control the greatest military forces in the world and wage wars on an epic scale: outer space is yours to conquer!
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