Best Sci-fi 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 sci-fi games. For those who prefer not to search, lists of the most played, top deals and best free sci-fi games are available at the bottom of the page.
Filters & Lists
Hate Plus
Let's spend the next three real-time days together uncovering the mystery of what went horribly wrong on a derelict generation ship, with the help of a spunky/more-than-slightly-traumatized AI sidekick! A sequel to Analogue: A Hate Story that tells a whole new hate story of its own.
Rise of the Triad
Apogee Software and Interceptor Entertainment proudly present the rebirth of the cult-classic first-person shooter, “Rise of the Triad”. Bigger, better and more ludicrous than ever before.
Shadowrun Returns
The unique cyberpunk-meets-fantasy world of Shadowrun has gained a huge cult following since its creation nearly 25 years ago. Now, creator Jordan Weisman returns to the world of Shadowrun, modernizing this classic game setting as a single player, turn-based tactical RPG.
Teleglitch: Die More Edition
In a cold, dark future dominated by mega-corporations, a small lonely planet on the edge of habitable space is the site of a shadowy research facility specializing in necrotic tissue reactivation. You are a scientist who has suddenly awoken to the realization that you are the lone survivor.
FINAL FANTASY VII
The RPG classic FINAL FANTASY VII returns to PC, now with brand new online features!
The Apogee Throwback Pack
The Apogee Throwback Pack is a collection of four classic Apogee Software titles all in one kick ass package. Blast your way across the galaxy as British Special Agent Blake Stone in "Aliens of Gold" and "Planet Strike", then take on an ancient evil menace as the H.U.N.T in "Rise of the Triad".
Magrunner: Dark Pulse
Magrunner: Dark Pulse is an action-puzzle game in which technology confronts the Cthulhu Mythos, penned by H.P. Lovecraft. Equipped with your Magtech glove, you must harness the ability to magnetically polarize and manipulate objects in the environment to survive and surpass challenging puzzles.
Remember Me
Remember Me™ is a 3rd person action adventure where players take on the role of Nilin, a former elite memory hunter with the ability to break into people’s minds and steal or even alter their memories.
The Swapper
What if someone knew your mind better than you did? The Swapper is an award-winning, narrative driven puzzle game set in the furthest reaches of space.
Resident Evil Revelations
Resident Evil® Revelations returns redefined for PC complete with high quality HD visuals, enhanced lighting effects and an immersive sound experience.
Sanctum 2
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
Anomaly 2
Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.
System Shock® 2 (Classic)
"Remember, it is my will that guided you here. It is my will that gave you your cybernetic implants, the only beauty in that meat you call a body. If you value that meat... you will do as I tell you." The cult classic sci-fi horror FPS-RPG has returned.
Super Sanctum TD
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
Far Cry 3 - Blood Dragon
Far Cry® 3: Blood Dragon is THE Kick-Ass Cyber Shooter.Welcome to an 80’s vision of the future. The year is 2007 and you are Sargent Rex Colt, a Mark IV Cyber Commando. Your mission: get the girl, kill the baddies, and save the world.
Zeno Clash 2
Ghat's story is far from over: Zeno Clash 2 picks up where the deliciously brazen first game left off. After 4 years of waiting, the sequel to the surreal first-person brawler brings more variety in combat and levels, and even more bizarre storytelling into the beguiling world of Zenozoik.
Strike Suit Infinity
Ok, cadet. This is it. All your training has brought you to this point - you are here for one reason only: to be the best.Strike Suit Infinity is a frantic high score chaser where your skill is the only thing that matters. Whatever combat experience you have had so far is considered irrelevant.
Receiver
Receiver was created for the 7-day FPS challenge to explore gun handling mechanics, randomized levels, and unordered storytelling. Armed only with a handgun and an audio cassette player, you must uncover the secrets of the Mindkill in a building complex infested with automated turrets and hovering shock drones.
Mars: War Logs
An Intense Cyberpunk Rpg On the Red Planet! Mars War Logs takes you to Mars, nearly a century after the cataclysm that threw the planet and its colonists into chaos. Water has become the most precious resource on the arid red planet, with a few companies fighting a perpetual war for its control.
ORION: Prelude
Work together to survive the devastating Dinosaur horde in huge, endless environments.
Another World – 20th Anniversary Edition
Also known as Out Of This World™, Another World is a pioneer action/platformer that released across more than a dozen platforms since its debut in 1991. Along the years, Another World™ has attained cult status among critics and sophisticated gamers alike.
BioShock Infinite
Indebted to the wrong people, with his life on the line, veteran of the U.S. Cavalry and now hired gun, Booker DeWitt has only one opportunity to wipe his slate clean. He must rescue Elizabeth, a mysterious girl imprisoned since childhood and locked up in the flying city of Columbia.Most played sci-fi games on Steam
Take a look at the top sci-fi games that are currently attracting the largest player bases on the Steam platform, as of April 20th 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 181,916 reviews of which 157,721 were positive and 24,195 were negative resulting in a rating of 8.6 out of 10. The game has hit the top spot as the #1 most played sci-fi game, thanks to its 13,587 peak concurrent players over the last day.
8.6
157,721
24,195
13,587
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 9,655 players online at once in the last 24 hours, this game is currently ranked #2 among sci-fi games based on player count.
8.2
290,482
59,427
9,655
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 99,111 reviews of which 76,646 were positive and 22,465 were negative resulting in a rating of 7.7 out of 10. While seeing 7,586 players online at once in the last 24 hours, this game is currently ranked #3 among sci-fi games based on player count.
7.7
76,646
22,465
7,586
players
4. Brotato
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives. Brotato is a rogue-like, singleplayer and action roguelike game developed and published by Blobfish. Released on June 23rd 2023 has received 95,805 reviews of which 92,641 were positive and 3,164 were negative resulting in an impressive rating of 9.5 out of 10. With 4,763 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played sci-fi games.
9.5
92,641
3,164
4,763
players
5. Mass Effect™ Legendary Edition
The Mass Effect™ Legendary Edition includes single-player base content and over 40 DLC from the highly acclaimed Mass Effect, Mass Effect 2, and Mass Effect 3 games, including promo weapons, armors, and packs — remastered and optimized for 4K Ultra HD. Mass Effect™ Legendary Edition is a story rich, rpg and choices matter game developed by BioWare and published by Electronic Arts. Released on May 14th 2021 has received 54,992 reviews of which 50,066 were positive and 4,926 were negative resulting in a rating of 9.0 out of 10. With 3,545 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played sci-fi games.
9.0
50,066
4,926
3,545
players
6. STAR WARS™ Empire at War - Gold Pack
Command or corrupt an entire galaxy in the definitive Star Wars strategy collection. It is a time of galactic civil war. Will you take up the reins of the Rebellion, assume control of the Empire, or rule the Star Wars Underworld? STAR WARS™ Empire at War - Gold Pack is a strategy, rts and space game developed by Petroglyph and published by LucasArts, Lucasfilm and Disney. Released on May 25th 2010 has received 38,829 reviews of which 37,908 were positive and 921 were negative resulting in an impressive rating of 9.6 out of 10. With 2,222 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played sci-fi games.
9.6
37,908
921
2,222
players
7. 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. FTL: Faster Than Light is a rogue-like, space and strategy game developed and published by Subset Games. Released on September 14th 2012 has received 74,438 reviews of which 71,021 were positive and 3,417 were negative resulting in an impressive rating of 9.4 out of 10. With 1,973 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played sci-fi games.
9.4
71,021
3,417
1,973
players
8. BATTLETECH
Take command of your own mercenary outfit of 'Mechs and the MechWarriors that pilot them, struggling to stay afloat as you find yourself drawn into a brutal interstellar civil war. BATTLETECH is a mechs, strategy and turn-based tactics game developed by Harebrained Schemes and published by Paradox Interactive. Released on April 24th 2018 has received 31,367 reviews of which 26,263 were positive and 5,104 were negative resulting in a rating of 8.2 out of 10. With 1,960 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played sci-fi games.
8.2
26,263
5,104
1,960
players
9. Half-Life 2
Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat. Half-Life 2 is a fps, action and sci-fi game developed and published by Valve. Released on November 16th 2004 has received 242,104 reviews of which 236,300 were positive and 5,804 were negative resulting in an impressive rating of 9.7 out of 10. With 1,774 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played sci-fi games.
9.7
236,300
5,804
1,774
players
10. 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. With 1,191 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played sci-fi games.
7.8
15,828
4,189
1,191
players
Best deals on sci-fi games on Steam
Discover fantastic savings with the best discounts on a variety of sci-fi games available on Steam right now, updated on April 20th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted sci-fi games.
1. Citizen Sleeper
Roleplaying in the ruins of interplanetary capitalism. Live the life of an escaped worker, washed-up on a lawless station at the edge of an interstellar society. Inspired by the flexibility and freedom of TTRPGs, explore the station, choose your friends, escape your past and change your future. Citizen Sleeper is a rpg, dice and story rich game developed by Jump Over The Age and published by Fellow Traveller. Released on May 05th 2022 has received 7,821 reviews of which 7,266 were positive and 555 were negative resulting in an impressive rating of 9 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for sci-fi category.
9
7,266
555
-95%
20.00€
1.00€
2. 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 4,740 reviews of which 3,717 were positive and 1,023 were negative resulting in a rating of 7.6 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in sci-fi games.
7.6
3,717
1,023
-95%
26.80€
1.34€
3. INDUSTRIA
Embark on a gripping journey in INDUSTRIA, an atmospheric FPS set in Cold War-era East Berlin. Unravel the secrets of a mysterious parallel dimension while searching for a missing colleague. Explore a haunting reality where the truth awaits. Discover the dark past that lies beyond. INDUSTRIA is a fps, action and sci-fi game developed by Bleakmill and published by Headup. Released on September 30th 2021 has received 3,188 reviews of which 2,265 were positive and 923 were negative resulting in a rating of 6.9 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in sci-fi games.
6.9
2,265
923
-95%
20.00€
1.00€
4. The Entropy Centre
Think in reverse. Outsmart the impossible. A mind-bending first-person adventure where you solve ingenious and complex puzzles by rewinding objects through time. The Entropy Centre is a puzzle, first-person and sci-fi game developed by Stubby Games and published by Playstack. Released on November 03rd 2022 has received 3,453 reviews of which 3,106 were positive and 347 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 94% discount, this title has earned the #4 position in the best deals for sci-fi games.
8.7
3,106
347
-94%
18.50€
1.11€
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 13,513 reviews of which 11,942 were positive and 1,571 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 sci-fi games.
8.6
11,942
1,571
-94%
33.33€
2.00€
6. The Gunk
The Gunk is an action-adventure game in which you play as Rani, part of our duo of gritty space haulers. As they’re struggling to bring in funds, they chance upon an untouched planet brimming with life. They came in search of valuable resources, and it looks like they’ve hit the jackpot… The Gunk is a action-adventure, atmospheric and sci-fi game developed by Image & Form Games and published by Thunderful Publishing. Released on April 29th 2022 has received 2,588 reviews of which 2,226 were positive and 362 were negative resulting in a rating of 8.3 out of 10. Currently offered at a significant 94% discount, this title has earned the #6 position in the best deals for sci-fi games.
8.3
2,226
362
-94%
24.33€
1.46€
7. Hellpoint
Hellpoint is an intense action RPG taking place on Irid Novo, a derelict space station soaked in an intoxicating dark sci fi atmosphere. Fight dreadful creatures, face the Cosmic Gods and unravel their twisted story. Should the challenge be too great, play with a friend in local or online coop. Hellpoint is a souls-like, sci-fi and action game developed by Cradle Games and published by tinyBuild. Released on July 30th 2020 has received 4,267 reviews of which 3,124 were positive and 1,143 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 94% discount, this title has earned the #7 position in the best deals for sci-fi games.
7.1
3,124
1,143
-94%
31.33€
1.88€
8. SPRAWL
SPRAWL is a hardcore retro FPS set in an endless cyberpunk megalopolis. Escape the walled city and take on the militarized government of the sprawl. Fueled by the blood of your enemies and a mysterious voice in your head, make your way towards the spire to topple whatever lays within. SPRAWL is a controller, sci-fi and combat game developed by MAETH and published by Rogue Games and Inc.. Released on August 23rd 2023 has received 1,950 reviews of which 1,712 were positive and 238 were negative resulting in a rating of 8.4 out of 10. Currently offered at a significant 93% discount, this title has earned the #8 position in the best deals for sci-fi games.
8.4
1,712
238
-93%
15.14€
1.06€
9. Shadowrun Returns
The unique cyberpunk-meets-fantasy world of Shadowrun has gained a huge cult following since its creation nearly 25 years ago. Now, creator Jordan Weisman returns to the world of Shadowrun, modernizing this classic game setting as a single player, turn-based tactical RPG. Shadowrun Returns is a rpg, cyberpunk and turn-based game developed by Harebrained Schemes and published by Paradox Interactive. Released on July 25th 2013 has received 13,339 reviews of which 11,792 were positive and 1,547 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 92% discount, this title has earned the #9 position in the best deals for sci-fi games.
8.6
11,792
1,547
-92%
15.50€
1.24€
10. Scars Above
Scars Above is a challenging sci-fi third-person action adventure shooter combining the rewarding feel of overcoming difficulty with a compelling and intricate story, set in a mysterious alien world to explore. Scars Above is a action, adventure and female protagonist game developed by Mad Head Games and published by Prime Matter. Released on February 28th 2023 has received 2,681 reviews of which 2,070 were positive and 611 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 92% discount, this title has earned the #10 position in the best deals for sci-fi games.
7.5
2,070
611
-92%
31.25€
2.50€
Free sci-fi games on Steam
Check out this fantastic list of free-to-play sci-fi games you can enjoy on Steam right now, updated on April 20th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play sci-fi games.
1. 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. With 1,191 active players enjoying it for free, this strategy game has reached the #1 spot among the top free sci-fi games on Steam.
7.8
15,828
4,189
1,191
players
2. 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. Thanks to its free to play tag and a daily player base of 169, this sci-fi game has secured the #2 spot in the ranking of free sci-fi games on Steam.
8.9
6,074
505
169
players
3. 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. Thanks to its free to play tag and a daily player base of 137, this sci-fi game has secured the #3 spot in the ranking of free sci-fi games on Steam.
7.1
1,976
708
137
players
4. 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 2,561 reviews of which 1,864 were positive and 697 were negative resulting in a rating of 7.1 out of 10. Attracting a solid base of 106 players due to its free access, this strategy game has achieved the #4 position in the best free sci-fi games on Steam.
7.1
1,864
697
106
players
5. Prosperous Universe
In Prosperous Universe start your galactic empire by trading on the real-time market exchange with other real players. Build your 1st base from humble beginnings & watch as your business flourishes with complex supply chain strategies. Economics, politics & realism fuel this immersive business MMO. Prosperous Universe is a early access, economy and resource management game developed and published by simulogics. Released on April 20th 2022 has received 883 reviews of which 665 were positive and 218 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #5 spot among the most played free sci-fi games on Steam.
7.2
665
218
21
players
6. Red Planet Farming
Become the first Agricultural Director of Mars in Red Planet Farming! This casual strategy game tasks players with producing enough food to feed a growing population of settlers on the red planet. Red Planet Farming is a strategy, indie and sci-fi game developed by Nina Demirjian, Sean Park and Sean Porio and published by Nina Demirjian. Released on May 25th 2020 has received 826 reviews of which 793 were positive and 33 were negative resulting in a rating of 9.0 out of 10. The game currently holds the #6 spot among the most played free sci-fi games on Steam.
9.0
793
33
6
players
7. 买个可乐饼吧！ - Buy a Croquette!
March 2012, Nagano. The smart and brave high school girl, Chio Aozora, is facing a major crisis: she has no money to buy a croquette! Navigate through the streets and alleys of Nagano, interact with a variety of characters, solve complex puzzles, collect 380 yen in coins, and buy a croquette! 买个可乐饼吧！ - Buy a Croquette! is a rpgmaker, sci-fi and mystery game developed by 越青 and published by Eternal Dream. Released on April 27th 2024 has received 4,099 reviews of which 4,062 were positive and 37 were negative resulting in an impressive rating of 9.5 out of 10. The game currently holds the #7 spot among the most played free sci-fi games on Steam.
9.5
4,062
37
5
players
8. AX:EL - Air XenoDawn
Combining the very best of sci-fi and aerial dogfighting gameplay, AX:EL delivers a totally new gaming experience. Create your very own shape-shifting vehicle and dominate both the sky and the ocean. AX:EL - Air XenoDawn is a action, indie and simulation game developed by Alex Piola and published by KISS ltd. Released on December 04th 2015 has received 1,181 reviews of which 891 were positive and 290 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #8 spot among the most played free sci-fi games on Steam.
7.2
891
290
4
players
9. South Scrimshaw, Part One
South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary. South Scrimshaw, Part One is a linear, sci-fi and hand-drawn game developed and published by Nathan O. Marsh. Released on June 09th 2023 has received 1,348 reviews of which 1,337 were positive and 11 were negative resulting in an impressive rating of 9.4 out of 10. The game currently holds the #9 spot among the most played free sci-fi games on Steam.
9.4
1,337
11
2
players
10. Terraformers: First Steps on Mars
Terraformers: First Steps on Mars is a free prologue of Terraformers, featuring an exclusive challenge to lead humanity's first attempt at settling the Red Planet. Terraformers: First Steps on Mars is a strategy, simulation and colony sim game developed by Asteroid Lab and published by Goblinz Publishing and IndieArk. Released on October 23rd 2021 has received 680 reviews of which 608 were positive and 72 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #10 spot among the most played free sci-fi games on Steam.
8.4
608
72
1
players