Most Popular Sci-fi Games on Steam

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

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Apex Legends™ Apex Legends is the award-winning, free-to-play Hero Shooter from Respawn Entertainment. Master an ever-growing roster of legendary characters with powerful abilities, and experience strategic squad play and innovative gameplay in the next evolution of Hero Shooter and Battle Royale.

Price Free to play
Rating 6.7
Release 04 Nov 2020
HELLDIVERS™ 2 The Galaxy’s Last Line of Offence. Enlist in the Helldivers and join the fight for freedom across a hostile galaxy in a fast, frantic, and ferocious third-person shooter.

Price -52% 19.56€
Rating 7.6
Release 08 Feb 2024
Cyberpunk 2077 Cyberpunk 2077 is an open-world, action-adventure RPG set in the dark future of Night City — a dangerous megalopolis obsessed with power, glamor, and ceaseless body modification.

Price 59.99€
Rating 8.4
Release 09 Dec 2020
Among Us An online and local party game of teamwork and betrayal for 4-15 players...in space!

Price -35% 2.94€
Rating 9.1
Release 16 Nov 2018
ARK: Survival Evolved Stranded on the shores of a mysterious island, you must learn to survive. Use your cunning to kill or tame the primeval creatures roaming the land, and encounter other players to survive, dominate... and escape!

Price 14.79€
Rating 8.3
Release 27 Aug 2017
Warframe Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game

Price Free to play
Rating 8.6
Release 25 Mar 2013
Destiny 2 Destiny 2 is an action MMO with a single evolving world that you and your friends can join anytime, anywhere, absolutely free.

Price Free to play
Rating 7.9
Release 01 Oct 2019
War Robots: Frontiers Gear up for tactical mech action in War Robots: Frontiers, a free-to-play multiplayer mech shooter. Construct and customize, squad up with Pilots online, and fire up your engines in massive intergalactic battles.

Price Free to play
Rating 6.3
Release 04 Mar 2025
Lethal Company A co-op horror about scavenging at abandoned moons to sell scrap to the Company.

Price 9.75€
Rating 9.6
Release 23 Oct 2023
Fallout 4 From Bethesda Game Studios, the award-winning creators of Starfield and The Elder Scrolls V: Skyrim, comes Fallout 4. A landmark in open-world RPG design and winner of over 200 ‘Best Of’ honors, including the DICE and BAFTA Game of the Year.

Price -77% 4.64€
Rating 8.2
Release 09 Nov 2015
Borderlands 2 The Ultimate Vault Hunter’s Upgrade lets you get the most out of the Borderlands 2 experience.

Price -98% 0.64€
Rating 9.2
Release 20 Sep 2012
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.

Price 9.75€
Rating 9.7
Release 16 Nov 2004
Satisfactory Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!

Price -42% 22.84€
Rating 9.6
Release 10 Sep 2024
R.E.P.O. An online co-op horror game with up to 6 players. Locate valuable, fully physics-based objects and handle them with care as you retrieve and extract to satisfy your creator's desires.

Price 9.49€
Rating 9.5
Release 26 Feb 2025
Portal Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.

Price 9.75€
Rating 9.7
Release 10 Oct 2007
Half-Life Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

Price 8.19€
Rating 9.5
Release 19 Nov 1998
Halo Infinite From one of gaming's most iconic sagas, Halo is bigger than ever. Featuring an expansive open-world campaign and a dynamic free to play multiplayer experience.

Price Free to play
Rating 6.9
Release 15 Nov 2021
Portal 2 The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!

Price 9.75€
Rating 9.8
Release 18 Apr 2011
Subnautica Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.

Price -48% 15.72€
Rating 9.6
Release 23 Jan 2018
No Man's Sky No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.

Price -80% 12.33€
Rating 8.2
Release 12 Aug 2016
Titanfall® 2 Respawn Entertainment gives you the most advanced titan technology in its new, single player campaign & multiplayer experience. Combine & conquer with new titans & pilots, deadlier weapons, & customization and progression systems that help you and your titan flow as one unstoppable killing force.

Price 29.99€
Rating 9.4
Release 18 Jun 2020
Halo: The Master Chief Collection The Master Chief’s iconic journey includes six games, built for PC and collected in a single integrated experience. Whether you’re a long-time fan or meeting Spartan 117 for the first time, The Master Chief Collection is the definitive Halo gaming experience.

Price 39.99€
Rating 9.1
Release 03 Dec 2019
Fallout: New Vegas Welcome to Vegas. New Vegas. Enjoy your stay!

Price -80% 2.04€
Rating 9.5
Release 21 Oct 2010
RimWorld A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.

Price -54% 14.73€
Rating 9.7
Release 17 Oct 2018
DOOM Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression.

Price -89% 2.20€
Rating 9.4
Release 12 May 2016
SCP: Secret Laboratory Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.

Price Free to play
Rating 9.0
Release 29 Dec 2017
DOOM Eternal Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you.

Price -91% 3.97€
Rating 9.0
Release 19 Mar 2020
Call of Duty®: Black Ops III Call of Duty®: Black Ops III Zombies Chronicles Edition includes the full base game plus the Zombies Chronicles content expansion.

Price 59.99€
Rating 8.4
Release 05 Nov 2015
Stray Lost, alone and separated from family, a stray cat must untangle an ancient mystery to escape a long-forgotten cybercity and find their way home.

Price -65% 10.08€
Rating 9.6
Release 19 Jul 2022
Crab Game Crab Game is a First-Person Multiplayer game where you play through several different minigames based on children's games, until only one player stands victorious.

Price Free to play
Rating 9.0
Release 29 Oct 2021
Content Warning Film your friends doing scary things to become SpöökTube famous! (strongly advised to not go alone)

Price -66% 2.59€
Rating 9.4
Release 01 Apr 2024
Warhammer 40,000: Space Marine 2 Embody the superhuman skill and brutality of a Space Marine. Unleash deadly abilities and devastating weaponry to obliterate the relentless Tyranid swarms. Defend the Imperium in spectacular third-person action in solo or multiplayer modes.

Price -76% 14.99€
Rating 8.2
Release 09 Sep 2024
Splitgate Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.

Price Free to play
Rating 9.0
Release 24 May 2019
Robocraft Build insane, fully customisable robot battle vehicles that drive, hover, walk and fly in the free-to-play action game Robocraft. Add weapons from the future and jump in the driving seat as you take your creation into battle against other players online!

Price Free to play
Rating 7.2
Release 24 Aug 2017
XCOM® 2 XCOM 2 is the sequel to XCOM: Enemy Unknown, the 2012 award-winning strategy game of the year. Earth has changed and is now under alien rule. Facing impossible odds you must rebuild XCOM, and ignite a global resistance to reclaim our world and save humanity.

Price -96% 0.80€
Rating 8.4
Release 04 Feb 2016
Saints Row IV: Re-Elected Experience the insane antics of Saints Row IV. The Saints have gone from the Penthouse to the White House - but Earth has been invaded and it’s up to you to save it with an arsenal of superpowers and strange weapons, in the wildest open world game ever.

Price -95% 1.10€
Rating 8.7
Release 22 Aug 2013

Most played sci-fi games


26,850 players

35,907
5,611
Rating 8.5

13,784 players

159,527
25,906
Rating 8.5

9,777 players

293,332
59,526
Rating 8.2

865 players

143,086
5,135
Rating 9.5

549 players

14,952
1,260
Rating 9.0

506 players

10,618
553
Rating 9.2

485 players

25,027
5,995
Rating 7.9

454 players

18,526
3,664
Rating 8.2

378 players

3,053
167
Rating 9.1