Top similar games like Sins of a Solar Empire®: Rebellion:
Sins of a Solar Empire®: Rebellion $19.99
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
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AI War 2$19.99
The most devious and acclaimed artificial intelligence in strategy gaming is better than ever. A grand strategy/RTS hybrid that reverses many conventions of both genres. Take territory without attracting attention, build your empire with care, and adapt to an ever-evolving galactic battleground.

Interstellar Space: Genesis$29.99
Interstellar Space: Genesis is a turn-based space 4X strategy game in which you attempt to build a thriving galactic empire. Discover mysteries among the stars, colonize worlds, and engage enemies in tactical turn-based combat on your journey to becoming the ruler of the galaxy!

Cosmonautica$9.99
Cosmonautica is a fresh take on space trading in a procedurally generated universe, paired with quirky humor for your intergalactic enjoyment.

Horizon$29.99
Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.

Galactic Ruler$19.99
Galactic Ruler offers real time strategy game play at both planetary level and in space! Lead your faction in diplomacy or conquest across a procedurally generated galactic map where any system might hold hostile enemies or resource riches. Develop advanced technologies to rule the galaxy!

Pax Nova$24.99
A sci-fi turn-based 4X strategy game where you lead the fate of one of several factions divided between three races. Explore new worlds and new star systems filled with exciting secrets as well as dangers. Build cities, expand your influence and fight great battles on land and in space.

The Spatials: Galactology$12.99
The Spatials are back with Galactology! Design, build and protect your colony station from the many enemies you will make while exploring the galaxy and exploding their homeworlds.

AI War: Fleet Command$9.99
"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...

Farworld Pioneers$14.99
Explore an open world, sci-fi sandbox – in PVP, PVE, and co-op. Build and manage colonies on alien planets, and recruit AI survivors with unique personalities and skills. Craft, build, mine, farm, or get your electric death rifle and say hello to your neighbors.

Empyrion - Galactic Survival$19.99
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!

Lord of Rigel$19.99
Lord of Rigel is a turn-based 4X space strategy game inspired by the classics. In a galaxy divided by two elder races, will you unite with other species or forge your own path? Navigate galactic politics and defeat threats using espionage, research, and military force. How will you shape the galaxy?

The Last Starship$24.99
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!

Hexarchy$19.99
Build cities, improve your land, gather resources, construct great wonders, trade with your rivals or conquer them. Hexarchy is an innovative, fast-paced historical strategy game where you use cards and deckbuilding to make your decisions. Single-player and online multiplayer.

Great Houses of Calderia$24.99
Great Houses of Calderia is a Feudal Grand Strategy game focusing on family dynamics & stories. Use your family strengths to compete against rivals to rise in the ranks of Calderia - produce, trade, scheme, bribe, and battle to build your legacy of power!

Space Haven$22.99
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.

Advisors at the End of the Universe$4.99
AEU is a fast paced realtime strategy and 4x hybrid. Players influence their empire to grow, fight, forge alliances or engage in trade. Players are given control over the empire's traits, research and a set of three types of abilities(Construction, Plagues and Agents) to accomplish their goals.

StarMade$14.99
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!

It's Not A Moon$0.99
Manage a space station, flying through a procedually generated universe, fight, build and survive in the coldness of space.

Universal Combat CE$9.99
The ultimate space capital ship combat compendium is the evolution of hard core space combat sims. The only game of its kind currently in existence.

Starmancer$14.99
From a small 2-man team comes a unique space station management sim. Take on the role of an A.I commanding a lost space ark. Try not to let your crew run amok and wreck the place.

Admiral Stepinski$14.99
A multiplayer, tactical, real-time strategy with spaceships

Void Destroyer 2$9.99
Start with nothing... End with everything! All you have is a basic ship, barely fit for combat, with it you'll start your journey and empire. A open world space sandbox, inspired by and expanding the classics.

The Pegasus Expedition$19.99
The Pegasus Expedition is a story-driven sci-fi grand strategy game set in a key moment for humankind’s survival. Facing an overwhelming threat at home, humanity sends expeditions to the Pegasus Galaxy in a desperate attempt to find a refuge for the population of Earth.

Star Conqueror 舰队指挥官$14.99
Engage in real-time battles with customizable space warships. Explore the galaxy, forge alliances, develop powerful ships, and defeat alien invaders.

Starport Delta$24.99
Build amongst the stars in Starport Delta, a light sci-fi strategy game that focuses on survival. Station Commanders across the universe will turn to you for guidance to expand, defend, and survive. Help them build a thriving station, but watch out, there are many dangers hiding in space...

Drift: Space Survival$19.99
You were deep in uncharted space on a research mission. Disaster struck. Together with your friends, explore a mysterious asteroid field and mine whatever resources possible to build what you need to survive.

Dust Fleet$19.99
Assume command of a battle fleet and deploy immediately to the Dust Zone, commander. Our main food supply station has gone dark and the United Earth Nations (UEN) needs to know why in this 4X RTS space sim. Manage your ships, control space stations, and watch your back.

Gemini Wars$9.99
Take control of a fleet commander returned from exile, rise through the ranks of the United Space Federation forces and join an epic war across the stars.

Dyson Sphere Program$19.99
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.

Galactic Civilizations® II: Ultimate Edition$9.99
Get the complete GalCiv II saga including Galactic Civilizations II: Dread Lords, the expansion pack Dark Avatar, and the newest expansion pack Twilight of the Arnor!

Final Upgrade$19.99
Help humanity to spread throughout the cosmos by exploring new worlds, building space factories and setting up trade routes. Research advanced technologies to increase efficiency and unlock new paths of development. Fight off other artificial intelligences in your goal to reach the Final Upgrade!

Stellar Warfare$19.99
Space RTS with base building and ship customization. Personal passion project. More than 200 available ships, weapons and modules to design your fleet with. Contains a small campaign, several single and multiplayer game modes and a coop game mode. Also contains Wave defense!

Nexus 5X$14.99
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.

Sins of a Solar Empire: Trinity®$9.99
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.

Reshaping Mars$9.99
「Reshaping Mars」is a colony simulation game on Mars, you will start by gathering resources, storing food, accepting immigrants, and building a better colony together. Develop powerful technologies for Mars Reshaping, make Mars great agai..sorry, just great. Don't forget to make the residents happy.

Making History: The Great War$29.99
The Great War is a turn-based grand strategy game based on the epic struggles of the WWI era. Experience the battles of attrition and punishing artillery barrages. Play as any nation of the period as the modern world of industrialized warfare replaces an age of kings with a struggle of ideologies.

Seven Kingdoms 2 HD$9.99
Get ready for an exciting real-time strategy game experience like no other with Seven Kingdoms 2! Say goodbye to the monotony of resource gathering and army building, its unique gameplay offers a thrilling blend of city management, trade, industry, espionage, diplomacy, and conquest!

Planetary Annihilation: TITANS$29.99
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!

Oxygen Not Included$24.99
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

Techtonica$29.99
Techtonica is a first-person factory automation game with a gripping mystery about mining your way out from the depths of an alien planet. Explore bioluminescent caves, mold destructible terrain, construct a massive subterranean factory. Dig your way toward answers & discover the secrets of Calyx.

War SelectionFREE
War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map.

Facteroids$14.99
Facteroids is a 3D factory building game about asteroid mining in space. Prospect, mine and manage your production lines in a variety of scenarios and procedurally generated worlds across the entire Solar system.

Steel Division 2$39.99
Steel Division 2 is a historically-accurate WW2 real-time strategy game set on the Eastern Front. Features 1:1-scale turn-based army management and real-time tactical battles with thousands of men at your order.

Ascend Factory$6.99
Welcome to Ascend Factory, a factory simulation game that challenges your ingenuity and resource management skills. Immerse yourself in a world of automation and strategic planning as you progress through levels of increasing complexity!

Fate of the World$9.99
Fate of the World is a dramatic global strategy game that puts all our futures in your hands. The game features a dramatic set of scenarios based on the latest science covering the next two centuries. You must manage a balancing act of protecting the Earth’s resources and climate versus the needs of an ever-growing world population, who...

Galaxicus$19.99
An MMO experience that's perfect for solo or team play. Join the adventure and become the ultimate Emperor of the galaxy. Conquer Planets, Manage Economies, Optimize Production, Upgrade Technology while exploring a Randomly-Generated Galaxy, and compete Seasonal PVP.

Structura$7.99
Structura is a rather unique sci-fi real-time strategy set in space. Its a hybrid of rts and fps, with emphasis on combat and survival. Build your economy for war, modify the unit by adding components, explore, expand, and survive the savage waves of enemy attacks.

To Victory$2.99
This is a single player strategy management game.Base on a randomly generated map.It includes construction, trading, strategy, and management elements . Players need to make decisions to achieve the final victory.

Planetbase$14.99
Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.

Space Station Continuum$14.99
Space Station Continuum is a building & management sim inspired by the past, present, and future of humans in space.

Hope of HumanityFREE
Engage in the construction of your station from a variety of different modules. Create your space fleet. Protect your base from enemies...