Best Space 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 games. For those who prefer not to search, lists of the most played, top deals and best free space games are available at the bottom of the page.
Filters & Lists
DOOM 3
A demonic invasion has overwhelmed the Union Aerospace Corporation's Mars research facility. As one of only a few survivors, you must fight your way to hell and back against a horde of demons in this award-winning horror/action FPS and reimagining of the original DOOM.
Planets Under Attack
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies.
FTL: Faster Than Light
This "spaceship simulation roguelike-like" allows you to take your ship and crew on an adventure through a randomly generated galaxy filled with glory and bitter defeat.
STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™
5 years after the events of the award winning original, the Sith are on the verge of crushing the Old Republic. As a lone Jedi, will you follow the light side or succumb to the dark?
Galaxy on Fire 2™ Full HD
A hyperdrive malfunction sends Keith T. Maxwell tumbling through space and time to fight for his life against a mysterious alien armada that is wreaking havoc.
Awesomenauts - the 2D moba
Use your power, show your might! Play this Multiplayer Online Battle Arena (MOBA) game for FREE now! AWESOMENAUTS combines 2D platforming with team-based strategy and hero based action. Whether you are a new recruit or an intergalactic legend, play AWESOMENAUTS!
ENDLESS™ Space - Definitive Edition
ENDLESS™ Space is a turn-based 4X strategy game, covering the space colonization age in the Endless universe, where you can control every aspect of your civilization as you strive for galactic domination.
Sins of a Solar Empire®: Rebellion
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.
Aliens: Colonial Marines Collection
You & your friends are the deadliest killers in the galaxy – the US Colonial Marines. It’s up to you to not just survive, but wipe out the Xeno infestation.
Lunar Flight
A modern take on the classic arcade game, Lunar Lander, Lunar Flight extends the experience to a fully fictionalized and accessible lunar module simulator
Really Big Sky
A super fast, twin analogue shooter for the modern age!
Star Trek Online
In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before.
Evochron Mercenary
The life of an independent mercenary is rarely without excitement. Your spacecraft awaits and your adventure begins in the Sapphire star system.
SATAZIUS
The year is 2051. Location: SATAZIUS, a long-abandoned planet. The cruiser Agano was on patrol when it was attacked and stricken by a confederacy of space pirates that had established a base on SATAZIUS. The pirates attacked the Agano intending to steal the assault ship ‘Trafalgar’ that was stowed aboard the Agano, but the Trafalgar made...
Galactic Civilizations® II: Ultimate Edition
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!
Sins of a Solar Empire: Trinity®
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.
Gemini Rue
Discover a world where life is cheap, identities are bought & sold, & a quest for redemption can change the fate of a whole galaxy.
Supreme Commander
For a thousand years, three opposing forces have waged war for what they believe is true. There can be no room for compromise: their way is the only way. Dubbed The Infinite War, this devastating conflict has taken its toll on a once-peaceful galaxy and has only served to deepen the hatred between the factions.
Supreme Commander: Forged Alliance
The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.
Alien Hallway
Players measure stamina with a never-ending stream of green creatures within the borders of a special military mission.
Space Pirates and Zombies
Explore a randomly generated Galaxy populated with factions, enemies, missions, and items providing you with a unique experience each time you play.
Red Faction®: Armageddon™
Red Faction: Armageddon Path to War includes 4 new missions, 2 unlockable items and 10 new achievements!Most played space games on Steam
Take a look at the top space games that are currently attracting the largest player bases on the Steam platform, as of April 16th 2025.
1. Stellaris
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities. Stellaris is a space, grand strategy and strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on May 09th 2016 has received 181,672 reviews of which 157,497 were positive and 24,175 were negative resulting in a rating of 8.6 out of 10. The game has hit the top spot as the #1 most played space game, thanks to its 9,926 peak concurrent players over the last day.
8.6
157,497
24,175
9,926
players
2. No Man's Sky
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe. No Man's Sky is a open world, open world survival craft and space game developed and published by Hello Games. Released on August 12th 2016 has received 349,909 reviews of which 290,482 were positive and 59,427 were negative resulting in a rating of 8.2 out of 10. While seeing 7,856 players online at once in the last 24 hours, this game is currently ranked #2 among space games based on player count.
8.2
290,482
59,427
7,856
players
3. 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 98,919 reviews of which 76,509 were positive and 22,410 were negative resulting in a rating of 7.7 out of 10. While seeing 5,805 players online at once in the last 24 hours, this game is currently ranked #3 among space games based on player count.
7.7
76,509
22,410
5,805
players
4. Unnamed Space Idle
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power. Unnamed Space Idle is a idler, casual and free to play game developed by Sylv and published by Jdog Corp. Released on July 27th 2023 has received 2,694 reviews of which 2,508 were positive and 186 were negative resulting in a rating of 8.9 out of 10. With 4,586 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played space games.
8.9
2,508
186
4,586
players
5. EVE Online
EVE Online is a free-to-play community driven space MMO where players can choose their own path from countless different options. Experience space exploration, immense PvP and PvE battles, mining, industry and a thriving player economy in an ever-expanding sandbox. EVE Online is a space, free to play and open world game developed and published by CCP. Released on December 15th 2010 has received 35,998 reviews of which 26,538 were positive and 9,460 were negative resulting in a rating of 7.3 out of 10. With 3,375 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played space games.
7.3
26,538
9,460
3,375
players
6. Among Us
An online and local party game of teamwork and betrayal for 4-15 players...in space! Among Us is a multiplayer, social deduction and online co-op game developed and published by Innersloth. Released on November 16th 2018 has received 699,079 reviews of which 642,113 were positive and 56,966 were negative resulting in an impressive rating of 9.1 out of 10. With 3,362 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played space games.
9.1
642,113
56,966
3,362
players
7. Space Engineers
Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses, pilot ships and travel through space to explore planets and gather resources to survive. Space Engineers is a space, sandbox and building game developed and published by Keen Software House. Released on February 28th 2019 has received 131,727 reviews of which 116,631 were positive and 15,096 were negative resulting in a rating of 8.7 out of 10. With 3,101 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played space games.
8.7
116,631
15,096
3,101
players
8. Kerbal Space Program
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics. Kerbal Space Program is a space, simulation and sandbox game developed by Squad and published by Private Division. Released on April 27th 2015 has received 126,215 reviews of which 120,127 were positive and 6,088 were negative resulting in an impressive rating of 9.4 out of 10. With 2,347 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played space games.
9.4
120,127
6,088
2,347
players
9. ASTRONEER
Interact with strange new worlds in a unique and tactile way, molding the environment itself as if it were clay in your hands. Build your base, master resource management, automate your production lines, and more as you unravel the mysteries of the universe, alone or with friends. ASTRONEER is a multiplayer, open world and open world survival craft game developed and published by System Era Softworks. Released on February 05th 2019 has received 127,856 reviews of which 117,817 were positive and 10,039 were negative resulting in an impressive rating of 9.1 out of 10. With 2,106 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played space games.
9.1
117,817
10,039
2,106
players
10. Dyson Sphere Program
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. Dyson Sphere Program is a automation, space and base-building game developed by Youthcat Studio and published by Gamera Games. Released on January 20th 2021 has received 84,564 reviews of which 82,585 were positive and 1,979 were negative resulting in an impressive rating of 9.6 out of 10. With 1,968 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played space games.
9.6
82,585
1,979
1,968
players
Best deals on space games on Steam
Discover fantastic savings with the best discounts on a variety of space games available on Steam right now, updated on April 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted space games.
1. Battlestar Galactica Deadlock
In Battlestar Galactica Deadlock™ you’ll take command of the Colonial Fleet in defense of the Twelve Colonies during the First Cylon War. Lead many different types of ships in this 3D tactical game. Every decision counts, your strategy will be vital – can you ensure mankind’s survival? Battlestar Galactica Deadlock is a strategy, space and sci-fi game developed by Black Lab Games and published by Slitherine Ltd.. Released on August 31st 2017 has received 3,427 reviews of which 2,881 were positive and 546 were negative resulting in a rating of 8.1 out of 10. Featuring a massive 96% discount, this game currently holds the #1 spot in the best deals for space category.
8.1
2,881
546
-96%
42.25€
1.69€
2. InfraSpace
Create an extrasolar efficiency utopia from scratch! In this sci-fi city builder you need to start mining operations, plan production, and lay down transportation routes to ensure a smooth supply chain. InfraSpace is a city builder, automation and transportation game developed and published by Dionic Software. Released on September 22nd 2023 has received 1,611 reviews of which 1,297 were positive and 314 were negative resulting in a rating of 7.7 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in space games.
7.7
1,297
314
-95%
20.00€
1.00€
3. Observation
Observation is a sci-fi thriller uncovering what happened to Dr. Emma Fisher, and the crew of her mission, through the lens of the station’s artificial intelligence S.A.M. Observation is a indie, adventure and space game developed by No Code and published by Devolver Digital. Released on May 21st 2020 has received 4,729 reviews of which 3,711 were positive and 1,018 were negative resulting in a rating of 7.6 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in space games.
7.6
3,711
1,018
-95%
26.80€
1.34€
4. This Means Warp
It’s co-op space survival fun, Jim, but not as we know it. This Means Warp is an intense spaceship management roguelite experience for 1-4 players. Explore a procedurally generated universe, upgrade your ship, battle dangerous enemies and adapt your strategies to survive in a hostile galaxy. This Means Warp is a survival, online co-op and space game developed by Outlier and published by Jagex Ltd. Released on May 04th 2023 has received 620 reviews of which 445 were positive and 175 were negative resulting in a rating of 6.9 out of 10. Currently offered at a significant 95% discount, this title has earned the #4 position in the best deals for space games.
6.9
445
175
-95%
20.00€
1.00€
5. Homeworld Remastered Collection
Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation. Homeworld Remastered Collection is a space, strategy and rts game developed by Gearbox Software and Aspyr (Mac) and published by Aspyr (Mac) and Gearbox Publishing. Released on February 25th 2015 has received 13,504 reviews of which 11,934 were positive and 1,570 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 94% discount, this title has earned the #5 position in the best deals for space games.
8.6
11,934
1,570
-94%
33.33€
2.00€
6. 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? Tin Can is a simulation, space and survival game developed by Tin Can Studio and published by Tin Can Studio and IndieArk. Released on May 12th 2022 has received 1,175 reviews of which 995 were positive and 180 were negative resulting in a rating of 8.1 out of 10. Currently offered at a significant 94% discount, this title has earned the #6 position in the best deals for space games.
8.1
995
180
-94%
16.67€
1.00€
7. Still There
Every day is the same on the faraway Bento space-lighthouse - until a mysterious radio message breaks through. Evade the past, welcome oblivion, make the perfect Italian coffee. Still There is a psychological adventure game about grief, technical puzzles, wacky AIs and dark humour. How far is far enough? Still There is a point & click, emotional and adventure game developed by GhostShark and published by Iceberg Interactive. Released on November 20th 2019 has received 1,272 reviews of which 1,100 were positive and 172 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 93% discount, this title has earned the #7 position in the best deals for space games.
8.2
1,100
172
-93%
14.29€
1.00€
8. Distant Worlds: Universe
Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game. Distant Worlds: Universe is a strategy, 4x and space game developed by Code Force and published by Slitherine Ltd.. Released on May 23rd 2014 has received 1,815 reviews of which 1,375 were positive and 440 were negative resulting in a rating of 7.3 out of 10. Currently offered at a significant 92% discount, this title has earned the #8 position in the best deals for space games.
7.3
1,375
440
-92%
28.00€
2.24€
9. Planets Under Attack
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies. Planets Under Attack is a strategy, indie and space game developed by Targem Games and published by TopWare Interactive. Released on September 27th 2012 has received 1,115 reviews of which 806 were positive and 309 were negative resulting in a rating of 7.0 out of 10. Currently offered at a significant 92% discount, this title has earned the #9 position in the best deals for space games.
7.0
806
309
-92%
12.50€
1.00€
10. 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. Shortest Trip to Earth is a rogue-lite, space and strategy game developed by Interactive Fate and published by Interactive Fate and Iceberg Interactive. Released on August 15th 2019 has received 1,385 reviews of which 1,066 were positive and 319 were negative resulting in a rating of 7.4 out of 10. Currently offered at a significant 91% discount, this title has earned the #10 position in the best deals for space games.
7.4
1,066
319
-91%
23.78€
2.14€
Free space games on Steam
Check out this fantastic list of free-to-play space games you can enjoy on Steam right now, updated on April 16th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play space games.
1. Unnamed Space Idle
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power. Unnamed Space Idle is a idler, casual and free to play game developed by Sylv and published by Jdog Corp. Released on July 27th 2023 has received 2,694 reviews of which 2,508 were positive and 186 were negative resulting in a rating of 8.9 out of 10. With 4,586 active players enjoying it for free, this strategy game has reached the #1 spot among the top free space games on Steam.
8.9
2,508
186
4,586
players
2. EVE Online
EVE Online is a free-to-play community driven space MMO where players can choose their own path from countless different options. Experience space exploration, immense PvP and PvE battles, mining, industry and a thriving player economy in an ever-expanding sandbox. EVE Online is a space, free to play and open world game developed and published by CCP. Released on December 15th 2010 has received 35,998 reviews of which 26,538 were positive and 9,460 were negative resulting in a rating of 7.3 out of 10. Thanks to its free to play tag and a daily player base of 3,375, this space game has secured the #2 spot in the ranking of free space games on Steam.
7.3
26,538
9,460
3,375
players
3. Galaxy Idle Clicker
Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe! Galaxy Idle Clicker is a idler, casual and clicker game developed and published by Soehnle. Released on July 18th 2024 has received 621 reviews of which 473 were positive and 148 were negative resulting in a rating of 7.2 out of 10. Thanks to its free to play tag and a daily player base of 1,290, this space game has secured the #3 spot in the ranking of free space games on Steam.
7.2
473
148
1,290
players
4. Star Trek Online
In Star Trek Online, the Star Trek universe appears for the first time on a truly massive scale. Players take the captain's chair as they command their own starship and crew. Explore strange new worlds, seek out new life and new civilizations, and boldly go where no one has gone before. Star Trek Online is a free to play, sci-fi and massively multiplayer game developed by Cryptic Studios and published by Arc Games. Released on January 31st 2012 has received 20,017 reviews of which 15,828 were positive and 4,189 were negative resulting in a rating of 7.8 out of 10. Attracting a solid base of 1,126 players due to its free access, this strategy game has achieved the #4 position in the best free space games on Steam.
7.8
15,828
4,189
1,126
players
5. Super Sus
Welcome to join the multiplayer social deduction game - Super Sus! Engage in intense gameplay with global players, as you strategize to safeguard your spaceship from the cunning Impostors determined to sabotage the mission and eliminate everyone aboard! Super Sus is a multiplayer, online co-op and social deduction game developed and published by GIANT INTERACTIVE HK LIMITED. Released on July 30th 2024 has received 1,057 reviews of which 729 were positive and 328 were negative resulting in a rating of 6.7 out of 10. Attracting a solid base of 182 players due to its free access, this strategy game has achieved the #5 position in the best free space games on Steam.
6.7
729
328
182
players
6. Star Trek Timelines
Explore the Final Frontier in the ultimate sci-fi strategy RPG, Star Trek Timelines! Join Starfleet and overcome challenges as you boldly go where no game has gone before – across the entire history of Star Trek. Star Trek Timelines is a free to play, strategy and space game developed and published by Tilting Point. Released on July 12th 2017 has received 1,417 reviews of which 932 were positive and 485 were negative resulting in a rating of 6.4 out of 10. Attracting a solid base of 170 players due to its free access, this strategy game has achieved the #6 position in the best free space games on Steam.
6.4
932
485
170
players
7. Pixel Starships
Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven. Pixel Starships is a sci-fi, space and strategy game developed and published by SavySoda. Released on May 23rd 2023 has received 2,684 reviews of which 1,976 were positive and 708 were negative resulting in a rating of 7.1 out of 10. Attracting a solid base of 150 players due to its free access, this strategy game has achieved the #7 position in the best free space games on Steam.
7.1
1,976
708
150
players
8. Endless Sky
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters. Endless Sky is a space, free to play and open world game developed and published by Michael Zahniser. Released on October 30th 2015 has received 6,579 reviews of which 6,074 were positive and 505 were negative resulting in a rating of 8.9 out of 10. Attracting a solid base of 103 players due to its free access, this strategy game has achieved the #8 position in the best free space games on Steam.
8.9
6,074
505
103
players
9. Hades' Star
A unique space strategy game where thousands of players participate in one shared galaxy. Hades' Star is a free to play, space and strategy game developed and published by Parallel Space Inc. Released on February 27th 2019 has received 2,558 reviews of which 1,861 were positive and 697 were negative resulting in a rating of 7.1 out of 10. Attracting a solid base of 103 players due to its free access, this strategy game has achieved the #9 position in the best free space games on Steam.
7.1
1,861
697
103
players
10. Planet S
Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction. Planet S is a strategy, city builder and multiplayer game developed and published by Glimmerlight Games. Released on October 28th 2023 has received 2,565 reviews of which 2,352 were positive and 213 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #10 spot among the most played free space games on Steam.
8.8
2,352
213
19
players