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 September 15th 2025. Want to explore even more sci-fi titles available on Steam? Explore the complete list of the best sci-fi games.
Lists & Categories
1. 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 game developed and published by . Released on August 12th 2016 has received 352,858 reviews of which 293,332 were positive and 59,526 were negative resulting in a rating of 8.2 out of 10. The game has hit the top spot as the #1 most played sci-fi game, thanks to its 55,008 peak concurrent players over the last day.
8.2
293,332
59,526
55,008
players
2. 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 game developed and published by . Released on May 09th 2016 has received 185,433 reviews of which 159,527 were positive and 25,906 were negative resulting in a rating of 8.5 out of 10. While seeing 10,763 players online at once in the last 24 hours, this game is currently ranked #2 among sci-fi games based on player count.
8.5
159,527
25,906
10,763
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 game developed and published by . 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. While seeing 5,269 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
77,388
22,636
5,269
players
4. 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 game developed and published by . Released on May 14th 2021 has received 56,328 reviews of which 51,295 were positive and 5,033 were negative resulting in a rating of 9.0 out of 10. With 3,323 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played sci-fi games.
9.0
51,295
5,033
3,323
players
5. 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 game developed and published by . Released on June 23rd 2023 has received 97,801 reviews of which 94,525 were positive and 3,276 were negative resulting in an impressive rating of 9.5 out of 10. With 3,105 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played sci-fi games.
9.5
94,525
3,276
3,105
players
6. Daemon X Machina: Titanic Scion
Feel the exhilaration of fast-paced combat in your fully customized armored suit as you freely explore a deadly and dangerous world on land or in the air. Take on titanic boss battles with alone or with up to two other friends in online co-op! Daemon X Machina: Titanic Scion is a game developed and published by . Released on September 05th 2025 has received 1,221 reviews of which 843 were positive and 378 were negative resulting in a rating of 6.7 out of 10. With 2,187 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played sci-fi games.
6.7
843
378
2,187
players
7. Cronos: The New Dawn
A whole new breed of survival horror emerges with Cronos: The New Dawn. Survive the brutal wastelands of the future, fight nightmarish merging creatures and jump back in time to harvest souls as you seek to uncover the origins of the apocalypse that wiped out humanity. Cronos: The New Dawn is a game developed and published by . Released on September 05th 2025 has received 3,539 reviews of which 3,066 were positive and 473 were negative resulting in a rating of 8.4 out of 10. With 2,015 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played sci-fi games.
8.4
3,066
473
2,015
players
8. 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 game developed and published by . Released on May 25th 2010 has received 39,435 reviews of which 38,503 were positive and 932 were negative resulting in an impressive rating of 9.6 out of 10. With 1,728 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played sci-fi games.
9.6
38,503
932
1,728
players
9. 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 game developed and published by . Released on April 24th 2018 has received 31,563 reviews of which 26,438 were positive and 5,125 were negative resulting in a rating of 8.2 out of 10. With 1,677 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played sci-fi games.
8.2
26,438
5,125
1,677
players
10. 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 game developed and published by . Released on November 16th 2004 has received 245,627 reviews of which 239,721 were positive and 5,906 were negative resulting in an impressive rating of 9.7 out of 10. With 1,336 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played sci-fi games.
9.7
239,721
5,906
1,336
players
More Sci-fi & Related Games
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