Discounted Space Sim Games on Steam
Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated space sim games. For those who prefer not to search, lists of the most played, top deals and best free space sim games are available at the bottom of the page.
Filters & Lists
Stellar Settlers: Space Base Builder
Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.
Astrometica
Astrometica is a space exploration and base-building survival game. After a catastrophic event, explore vast space, gather resources, build bases, and uncover cosmic mysteries. Use advanced technology, craft tools, and discover new blueprints to survive and thrive in the unknown.
Star Trucker
Haul cargo, trade salvage and keep your space suit close as you search for fame and fortune among the stars in a game that puts an interstellar twist on the truck sim genre.
Space industrial empire
This is a idle game modeled on industrial building gameplay. It will be three-dimensional, complex industrial assembly line, easy, simple plane conveyor belt. At the same time to join the battleship assembly, space campaign, character development, giant construction, trade orders and other gameplay!
Underspace
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with Day 1 mod support and a planned PvP/co-op multiplayer on the Early Access roadmap. You're going to need a bigger ship.
Dune: Imperium
The award-winning board game of strategy and intrigue in the iconic universe of Dune. The Spice must flow.
Between the Stars
Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.
Airship: Kingdoms Adrift
Welcome to Suthseg! As the newly commissioned airship captain, forge a mercantile empire across the archipelago, until the great powers of Europa turn their attention toward it. Build up a fleet, chart trade routes, establish industries, and explore the frontier at your airship's helm!
BattleGroupVR
BattleGroupVR is a first person real-time space strategy where you lead a fleet of powerful warships into battle from the bridge of your own flagship. Assemble your fleet, upgrade your load-outs, train your captains, engage the enemy and secure the sector. Try not to go down with the ship.
EarthX
EarthX is a rocket company management game. Go from launching small rockets on Earth to eventually building a colony on Mars. Create your own Internet constellation, develop new technologies, supply the International Space Station and terraform Mars!
Mars First Logistics
Build physically simulated rovers to transport awkwardly shaped cargo across the rugged terrain of Mars. Earn funds, unlock new parts, and use your ingenuity to help the Martians establish a new home. Playable solo or in online co-op!
Lightracer Spark
Lightracer Spark is a Sci-Fi Narrative game. You are an amender from a high civilization, descending to various extraterrestrial worlds. Guide living beings to prosperity, or nip a spark in the bud. Accumulate strength through choices and strategies to grasp the rise and fall of all civilizations.
Industries of Titan
Create a sprawling industrial city. Compete with other rival corporations on Titan for resources, territory, and power. Seek victory via technology, influence, warfare, or the wealth extracted from your citizens. Stake your claim to the Industries of Titan in this innovative sim/strategy game!
Juno: New Origins
Bring to life anything you can imagine from rockets and airplanes to cars and more. Automate them with a visual programming language. Explore 3D planets and make your own. Share your creations online. Complete contracts, conquer milestones, and unlock technology in the newly added Career Mode.
Final Upgrade
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!
Astro Colony
Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.
Marauders
Marauders is a tactical first-person multiplayer looter shooter set in a sci-fi universe. As a space pirate, work solo, or in a squad with up to 3 other players to navigate a hostile battleground, hunt for loot, craft new weapons and gear, and salvage what you’ll need to survive.
Redout 2
The fastest racing game in the universe. Redout 2 is a tribute to classic arcade racing games and the sequel to the critically acclaimed Redout. Reach impossible speeds in exhilarating futuristic races across an extensive single-player campaign and competitive multiplayer.
Hardspace: Shipbreaker
Equipped with cutting-edge salvaging tech, carve & slice spaceships to recover valuable materials. Upgrade your gear to take on more lucrative contracts and pay your billion credits debt to LYNX Corp!
Tin Can
You've barely managed to escape your exploding spaceship. Now in an old escape pod, you hurtle through space at the mercy of the cosmos. With no knowledge of the pod’s complex systems, your life depends on a technical manual and your own wits. How long can you survive?
First Class Trouble
First Class Trouble is a party game where players must work together and against each other to survive a disaster. The goal is to shut down a deadly A.I. Some players are impostors, secretly playing as human-looking killer robots intent on betraying the other players.
Most played space sim games on Steam
Take a look at the top space sim games that are currently attracting the largest player bases on the Steam platform, as of June 15th 2025.
1. Elite Dangerous
Take control of your own starship in a cutthroat galaxy. Elite Dangerous is the definitive massively multiplayer space epic. Elite Dangerous is a space sim, space and open world game developed and published by Frontier Developments. Released on April 02nd 2015 has received 100,024 reviews of which 77,388 were positive and 22,636 were negative resulting in a rating of 7.7 out of 10. The game has hit the top spot as the #1 most played space sim game, thanks to its 4,961 peak concurrent players over the last day.
7.7
77,388
22,636
4,961
players
2. X4: Foundations
Thrilling space battles meet deep strategy. X4 invites you to explore, fight, trade, and build an empire in a dynamic, fully simulated space sandbox, where every decision shapes your journey. Now featuring the 2025 flight model overhaul. X4: Foundations is a space sim, simulation and sandbox game developed and published by Egosoft. Released on November 30th 2018 has received 23,847 reviews of which 18,951 were positive and 4,896 were negative resulting in a rating of 7.8 out of 10. While seeing 2,460 players online at once in the last 24 hours, this game is currently ranked #2 among space sim games based on player count.
7.8
18,951
4,896
2,460
players
3. Void Crew
Void Crew is a Chaotic, Co-op Roguelite game for 1 to 6 players: Outfit your spaceship and crew for thrilling quests, brave fierce enemies in Space Battles... and try not to panic! Void Crew is a co-op, multiplayer and space sim game developed by Hutlihut Games and published by Focus Entertainment. Released on November 25th 2024 has received 6,713 reviews of which 5,922 were positive and 791 were negative resulting in a rating of 8.6 out of 10. While seeing 942 players online at once in the last 24 hours, this game is currently ranked #3 among space sim games based on player count.
8.6
5,922
791
942
players
4. 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. Avorion is a exploration, sandbox and space sim game developed and published by Boxelware. Released on March 09th 2020 has received 13,614 reviews of which 12,286 were positive and 1,328 were negative resulting in a rating of 8.8 out of 10. With 741 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played space sim games.
8.8
12,286
1,328
741
players
5. Star Trucker
Haul cargo, trade salvage and keep your space suit close as you search for fame and fortune among the stars in a game that puts an interstellar twist on the truck sim genre. Star Trucker is a transportation, space sim and automobile sim game developed by Monster and Monster and published by Raw Fury. Released on September 03rd 2024 has received 4,271 reviews of which 3,373 were positive and 898 were negative resulting in a rating of 7.7 out of 10. With 107 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played space sim games.
7.7
3,373
898
107
players
6. Spaceflight Simulator
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds. Spaceflight Simulator is a sandbox, space sim and space game developed and published by Team Curiosity ✦. Released on February 17th 2022 has received 6,318 reviews of which 6,085 were positive and 233 were negative resulting in an impressive rating of 9.3 out of 10. The game currently holds the #6 spot among the most played space sim games.
9.3
6,085
233
96
players
7. Starcom: Unknown Space
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds. Starcom: Unknown Space is a space, exploration and open world game developed and published by Wx3 Labs and LLC. Released on September 02nd 2024 has received 3,168 reviews of which 2,928 were positive and 240 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #7 spot among the most played space sim games.
8.9
2,928
240
77
players
8. PULSAR: Lost Colony
The co-op open-world space sim where everyone has a role! Pilot the ship. Reroute power. Launch nukes. Explore alien planets. Research new talents. Work together to find the Lost Colony! ...or just deliver some biscuits PULSAR: Lost Colony is a space sim, open world and simulation game developed and published by Leafy Games. Released on June 22nd 2021 has received 5,578 reviews of which 5,020 were positive and 558 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #8 spot among the most played space sim games.
8.7
5,020
558
77
players
9. Star Conflict
Star Conflict is an action-packed, massively multiplayer space simulation game that puts players in the role of elite pilots engaging in a widespread interplanetary skirmish. The whole world for PVP and PVE! Star Conflict is a online co-op, free to play and space sim game developed by Star Gem Inc. and published by Gaijin Network Ltd. Released on February 27th 2013 has received 14,853 reviews of which 10,879 were positive and 3,974 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #9 spot among the most played space sim games.
7.2
10,879
3,974
76
players
10. Astrometica
Astrometica is a space exploration and base-building survival game. After a catastrophic event, explore vast space, gather resources, build bases, and uncover cosmic mysteries. Use advanced technology, craft tools, and discover new blueprints to survive and thrive in the unknown. Astrometica is a space sim, survival and open world game developed by BeryMery and published by RockGame S.A.. Released on December 10th 2024 has received 2,019 reviews of which 1,766 were positive and 253 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #10 spot among the most played space sim games.
8.4
1,766
253
57
players
Best deals on space sim games on Steam
Discover fantastic savings with the best discounts on a variety of space sim games available on Steam right now, updated on June 15th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted space sim games.
1. 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. Rebel Galaxy Outlaw is a space sim, open world and action-adventure game developed and published by Double Damage Games. Released on September 22nd 2020 has received 1,033 reviews of which 659 were positive and 374 were negative resulting in a rating of 6.2 out of 10. Featuring a massive 99% discount, this game currently holds the #1 spot in the best deals for space sim category.
6.2
659
374
-99%
24.99€
0.43€
2. BattleGroupVR
BattleGroupVR is a first person real-time space strategy where you lead a fleet of powerful warships into battle from the bridge of your own flagship. Assemble your fleet, upgrade your load-outs, train your captains, engage the enemy and secure the sector. Try not to go down with the ship. BattleGroupVR is a space sim, space and vr game developed and published by SpaceOwl Games. Released on July 31st 2023 has received 902 reviews of which 834 were positive and 68 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 98% discount, this game is now the #2 best deal in space sim games.
8.7
834
68
-98%
20.99€
0.42€
3. Juno: New Origins
Bring to life anything you can imagine from rockets and airplanes to cars and more. Automate them with a visual programming language. Explore 3D planets and make your own. Share your creations online. Complete contracts, conquer milestones, and unlock technology in the newly added Career Mode. Juno: New Origins is a building, science and space sim game developed and published by Jundroo and LLC. Released on January 26th 2023 has received 3,118 reviews of which 2,807 were positive and 311 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 97% discount, this game is now the #3 best deal in space sim games.
8.7
2,807
311
-97%
19.50€
0.63€
4. PULSAR: Lost Colony
The co-op open-world space sim where everyone has a role! Pilot the ship. Reroute power. Launch nukes. Explore alien planets. Research new talents. Work together to find the Lost Colony! ...or just deliver some biscuits PULSAR: Lost Colony is a space sim, open world and simulation game developed and published by Leafy Games. Released on June 22nd 2021 has received 5,578 reviews of which 5,020 were positive and 558 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 90% discount, this title has earned the #4 position in the best deals for space sim games.
8.7
5,020
558
-90%
19.50€
2.01€
5. 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. SimpleRockets is a simulation, sandbox and physics game developed and published by Jundroo and LLC. Released on June 03rd 2015 has received 358 reviews of which 306 were positive and 52 were negative resulting in a rating of 7.9 out of 10. Currently offered at a significant 89% discount, this title has earned the #5 position in the best deals for space sim games.
7.9
306
52
-89%
7.79€
0.88€
6. X3: Reunion
X3: Reunion continues the epic space saga, blending deep space trading and intense real-time combat. Explore a vast universe, establish your empire, and shape the new frontier. With enhanced graphics and intricate economies, it's a journey of strategy, simulation, and interstellar intrigue. X3: Reunion is a space, simulation and strategy game developed and published by Egosoft. Released on July 21st 2006 has received 685 reviews of which 494 were positive and 191 were negative resulting in a rating of 6.9 out of 10. Currently offered at a significant 86% discount, this title has earned the #6 position in the best deals for space sim games.
6.9
494
191
-86%
9.99€
1.46€
7. X4: Foundations
Thrilling space battles meet deep strategy. X4 invites you to explore, fight, trade, and build an empire in a dynamic, fully simulated space sandbox, where every decision shapes your journey. Now featuring the 2025 flight model overhaul. X4: Foundations is a space sim, simulation and sandbox game developed and published by Egosoft. Released on November 30th 2018 has received 23,847 reviews of which 18,951 were positive and 4,896 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 84% discount, this title has earned the #7 position in the best deals for space sim games.
7.8
18,951
4,896
-84%
49.99€
8.16€
8. Interstellar Rift
Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy! Interstellar Rift is a space sim, building and open world game developed by Split Polygon and published by Iceberg Interactive. Released on September 24th 2020 has received 1,627 reviews of which 1,125 were positive and 502 were negative resulting in a rating of 6.7 out of 10. Currently offered at a significant 84% discount, this title has earned the #8 position in the best deals for space sim games.
6.7
1,125
502
-84%
19.50€
3.22€
9. Elite Dangerous
Take control of your own starship in a cutthroat galaxy. Elite Dangerous is the definitive massively multiplayer space epic. Elite Dangerous is a space sim, space and open world game developed and published by Frontier Developments. Released on April 02nd 2015 has received 100,024 reviews of which 77,388 were positive and 22,636 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 80% discount, this title has earned the #9 position in the best deals for space sim games.
7.7
77,388
22,636
-80%
19.99€
4.15€
10. 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. Avorion is a exploration, sandbox and space sim game developed and published by Boxelware. Released on March 09th 2020 has received 13,614 reviews of which 12,286 were positive and 1,328 were negative resulting in a rating of 8.8 out of 10. Currently offered at a significant 58% discount, this title has earned the #10 position in the best deals for space sim games.
8.8
12,286
1,328
-58%
24.99€
10.71€
Free space sim games on Steam
Check out this fantastic list of free-to-play space sim games you can enjoy on Steam right now, updated on June 15th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play space sim games.
1. Star Conflict
Star Conflict is an action-packed, massively multiplayer space simulation game that puts players in the role of elite pilots engaging in a widespread interplanetary skirmish. The whole world for PVP and PVE! Star Conflict is a online co-op, free to play and space sim game developed by Star Gem Inc. and published by Gaijin Network Ltd. Released on February 27th 2013 has received 14,853 reviews of which 10,879 were positive and 3,974 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #1 spot among the most played free space sim games on Steam.
7.2
10,879
3,974
76
players
2. Space Commander: War and Trade
Fight, explore the stars, trade, and lead your fleet across the galaxySpace Commander: War and Trade is an ultimate single player space-sim featuring spectacular graphics, intuitive combat and deep mechanics. Space Commander: War and Trade is a action, rpg and base-building game developed and published by Home Net Games. Released on November 04th 2020 has received 656 reviews of which 442 were positive and 214 were negative resulting in a rating of 6.5 out of 10. The game currently holds the #2 spot among the most played free space sim games on Steam.
6.5
442
214
10
players
3. Sputnika Game
A Cosmic twist on a Suika-style game with space gravity. Help our little friend Sputnik on his journey to become the Sun. Sputnika Game is a casual, strategy and puzzle game developed and published by egunan. Released on February 11th 2024 has received 477 reviews of which 431 were positive and 46 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #3 spot among the most played free space sim games on Steam.
8.4
431
46
7
players