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 July 30th 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. 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. The game has hit the top spot as the #1 most played sci-fi game, thanks to its 9,065 peak concurrent players over the last day.
8.5
159,527
25,906
9,065
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 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. While seeing 8,169 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
293,332
59,526
8,169
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 5,419 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
5,419
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 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 3,376 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played sci-fi games.
9.5
94,525
3,276
3,376
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 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 2,939 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played sci-fi games.
9.0
51,295
5,033
2,939
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 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 1,735 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played sci-fi games.
9.6
38,503
932
1,735
players
7. 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 1,601 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played sci-fi games.
9.7
239,721
5,906
1,601
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 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 1,419 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played sci-fi games.
8.2
26,438
5,125
1,419
players
9. 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 game developed and published by . Released on January 31st 2012 has received 20,145 reviews of which 15,939 were positive and 4,206 were negative resulting in a rating of 7.8 out of 10. With 1,325 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played sci-fi games.
7.8
15,939
4,206
1,325
players
10. 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 game developed and published by . Released on September 14th 2012 has received 75,052 reviews of which 71,561 were positive and 3,491 were negative resulting in an impressive rating of 9.4 out of 10. With 1,165 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played sci-fi games.
9.4
71,561
3,491
1,165
players
More Sci-fi & Related Games
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