Best Space Sim Steam Games on Sale

Unlike generic lists, our game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated space sim games.

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Rebel Galaxy Outlaw Out of cash, out of luck, out on the fringe. Juno Markev has a killer to tail, a debt to pay, and more trouble headed her way. Rebel Galaxy Outlaw takes place in a greasy, blue-collar world of outlaws, truckers, cops and thieves.

Price -96% 1.01€
Rating 6.2
Release 22 Sep 2020
Ostranauts Navigate your scrappy ship through the boneyard in search of valuable parts in abandoned vessels. Use salvage to upgrade your ship, or sell it for cash to pay down your mounting debt, or restock fuel, air, or food. Fly and role-play aboard your dream spaceship in this hardcore noir space-sim.

Price -20% 16.39€
Rating 7.6
Release 10 Sep 2020
Empyrion - Galactic Survival 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!

Price -88% 2.45€
Rating 7.8
Release 05 Aug 2020
SpaceBourne Spacebourne is an open space exploration game with Rpg elements. Its world consists of different factions at war. You as an expert pilot need to choose your side or be on no one's side and create a force of your own. Load up your weapons, Ready your ship and warp to adventure.

Price -80% 2.49€
Rating 7.3
Release 18 Jul 2020
Starship EVO Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.

Price -20% 19.60€
Rating 8.1
Release 19 Jun 2020
Space Simulation Toolkit Physics sandbox game that uses a graphics card as a supercomputer. Change the laws of physics, design mechanisms, create A-Life worlds and inhabit them with living beings, experiment with evolution and AI.

Price -30% 17.15€
Rating 7.5
Release 05 Jun 2020
Nimbatus - The Space Drone Constructor Command the Nimbatus and craft drones out of hundreds of different parts. Survive unknown threats in a fully destructible, procedural universe, compete against other players in different arenas or enjoy complete creative freedom in the sandbox.

Price -75% 4.87€
Rating 7.7
Release 14 May 2020
Avorion A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.

Price -75% 6.43€
Rating 8.8
Release 09 Mar 2020
Genesis Alpha One Deluxe Edition Hyperjump into the dark recesses of space with Genesis Alpha One - a roguelike FPS where you must build, maintain and navigate your ship through a galaxy filled with hostile alien and human threats. Explore, create and survive the militarized space race in order to secure humanity’s future.

Price -90% 1.99€
Rating 6.7
Release 25 Feb 2020
Void Destroyer 2 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.

Price -52% 3.93€
Rating 7.7
Release 06 Feb 2020
Starcom: Nexus Suddenly thrown into an unknown galaxy, you must explore, fight or befriend aliens and transform your ship from a small survey vessel into a powerful battlecruiser to unravel the mystery of the forces that brought you here and find your way home.

Price -60% 6.71€
Rating 8.6
Release 12 Dec 2019
Deliver Us The Moon Deliver Us The Moon is a Sci-Fi thriller set in an apocalyptic near future where Earth's natural resources are depleted. In an effort to solve the energy crisis, global powers created the World Space Agency and secured a promising new source of energy on the moon.

Price -98% 0.70€
Rating 8.6
Release 10 Oct 2019
Infinity: Battlescape Infinity: Battlescape is a multiplayer space combat sim supporting hundreds of players on a single server. Join one of the corporate factions and fight for domination of a seamless, true-to-scale procedural star system. Participate in massive space and planetary battles involving hundreds of ships.

Price -33% 23.44€
Rating 7.6
Release 26 Sep 2019
Shortest Trip to Earth Shortest Trip to Earth is a roguelike spaceship simulator focused on exploration, ship management and tactical battles. Embark on a perilous journey across the universe with nuclear missiles, armed crew and a cat.

Price -98% 0.64€
Rating 7.4
Release 15 Aug 2019
Oxygen Not Included 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.

Price -70% 6.89€
Rating 9.5
Release 30 Jul 2019
1000 days to escape Only 1000 days left until the end of the world. You have to realize the largest space program ever to save as many people as you can. Explore planets, colonize them, help people find a new home.

Price -65% 1.39€
Rating 7.8
Release 25 Jul 2019
SpaceEngine The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.

Price -40% 17.39€
Rating 9.3
Release 11 Jun 2019
Interstellar Transport Company Build a galactic transportation empire and supply humanity with everything it needs to colonize the stars. In this sci-fi logistics simulator, grow your company from a local transport agency into an interstellar logistics behemoth! Singleplayer, vs AI, and online multiplayer.

Price -75% 5.49€
Rating 6.5
Release 24 May 2019
X4: Foundations Your journey to building a vast space empire begins behind the controls of a single ship. Explore, trade, fight, and build as you rise to command fleets, stations, and entire economies in a living, fully simulated universe that reacts to every decision.

Price -89% 5.98€
Rating 7.8
Release 30 Nov 2018
60 Parsecs! 60 Parsecs! is an Atomic Space Age adventure of scavenge and survival. Keep your crew alive and ready for action. Make difficult choices, face soup shortages and other horrors of outer space. And maybe reach your destination. Or not.

Price -80% 2.01€
Rating 8.5
Release 18 Sep 2018
Star Traders: Frontiers You are the captain of a starship venturing through a massive open universe. Customize your crew and take command at the helm of your very own ship as you explore a galaxy torn apart by internal strife, alien threats, and political intrigue.

Price -60% 5.91€
Rating 8.1
Release 31 Jul 2018
Surviving Mars There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.

Price -79% 5.78€
Rating 8.3
Release 15 Mar 2018
3030 Deathwar Redux - A Space Odyssey 3030 Deathwar is a unique mix of Adventure and Space Sim. Explore star systems, mine and hunt pirates in top-down mode. Leave your ship and switch into classic Adventuring mode, where you explore derelicts, talk to shady characters or head over to the space bar for a drink.

Price -67% 4.94€
Rating 8.9
Release 13 Sep 2017
EVERSPACE EVERSPACE™ combines fast-paced combat with roguelike elements, great visuals and a captivating story. It takes you on a challenging journey through an ever-changing, beautifully crafted universe full of surprises. Shoot, craft and loot your way to victory while the odds are stacked against you.

Price -90% 1.99€
Rating 7.7
Release 25 May 2017
Starpoint Gemini Warlords Strategy from the front lines! Starpoint Gemini Warlords combines 3rd person capital spaceship combat with 4X strategy and RPG gameplay elements. Build mighty war fleets and send them into battle or lead them into combat yourself. Become the Warlord and conquer the Gemini system!

Price -96% 1.58€
Rating 7.1
Release 23 May 2017
Interkosmos Enter the ultimate 1970s space capsule in this thrilling VR adventure. Awaken your inner cosmonaut with intense, interactive gameplay, manage catastrophic system failures, and experience a hilarious story of Cold War absurdities. Can you make it back to Earth alive?

Price -80% 0.99€
Rating 7.6
Release 25 Apr 2017
House of the Dying Sun House of the Dying Sun is a tactical space shooter that puts you in the cockpit of the universe's most terrifying starfighter. Hunt the enemies of the Empire and bring ruin to their people.

Price -70% 5.99€
Rating 8.6
Release 01 Nov 2016
Children of a Dead Earth The most scientifically accurate space warfare simulator ever made. Now with Steam Workshop!

Price -75% 4.87€
Rating 8.5
Release 23 Sep 2016
No Man's Sky No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.

Price -80% 11.83€
Rating 8.2
Release 12 Aug 2016
Polandball: Can into Space! Crazy fun rocket simulator game with countryballs theme. Can Polandball into Space? Try to find out!

Price -72% 0.83€
Rating 8.7
Release 15 Jun 2016
Evochron Legacy SE Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.

Price -20% 19.60€
Rating 7.7
Release 18 Jan 2016
Rebel Galaxy Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.

Price -98% 0.46€
Rating 8.3
Release 20 Oct 2015
Planetbase 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.

Price -58% 6.34€
Rating 7.8
Release 15 Oct 2015
Universe Sandbox Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.

Price -63% 10.91€
Rating 9.4
Release 24 Aug 2015
SimpleRockets I am excited to release my first game on Steam! SimpleRockets was released in 2013 for mobile and I've put a ton of work into it to get it ready for PC and Mac. It was inspired by KSP, and it offers a simpler 2D experience for building rockets and exploring space with realistic orbital mechanics.

Price -75% 1.94€
Rating 7.9
Release 03 Jun 2015
Space Colony: Steam Edition Space Colony: Steam Edition is a remaster of the real-time base builder and strategy game from Firefly Studios, creators of the Stronghold series. In Space Colony you colonize to survive, designing intergalactic bases that keep your crew productive, happy and defended against hostile alien threats.

Price -90% 1.49€
Rating 7.6
Release 30 Apr 2015

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