Free Sci-fi Games on Steam
Steam currently has 12,212 Sci-fi games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Sci-fi game rankings were last updated on 6/7/2025.
Looking for more? Explore other lists such as:
- Best sci-fi games on Steam
- Best sci-fi Steam Deck games
- Best sci-fi Steam games for Mac OS
- Best sci-fi Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. 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.
Apex Legends™ holds the #1 spot for "best free Sci-fi game on Steam" with a Player Score of 67. Its score was calculated by analyzing a total of 995,106 reviews on Steam. This breaks down to a total of 668,130 positive reviews and 326,976 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Apex Legends™ on the Steam Deck.
| Release Date | 11/5/2020 |
| Franchise | Apex Legends Official |
| Developers | |
| Publisher | Electronic Arts |
| Steam App Id | 1172470 |
2. Marvel Rivals
Marvel Rivals is a Super Hero Team-Based PVP Shooter! Assemble an all-star Marvel squad, devise countless strategies by combining powers to form unique Team-Up skills and fight in destructible, ever-changing battlefields across the continually evolving Marvel universe!
Marvel Rivals has achieved a Player Score of 79, placing it in the #2 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 288,380 reviews on Steam. This breaks down to a total of 229,303 positive reviews and 59,077 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Marvel Rivals on the Steam Deck (though some functionality may be limited).
| Release Date | 12/6/2024 |
| Developer | NetEase Games |
| Publisher | NetEase Games |
| Steam App Id | 2767030 |
3. Warframe
Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game
Warframe has achieved a Player Score of 87, placing it in the #3 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 620,376 reviews on Steam. This breaks down to a total of 542,424 positive reviews and 77,952 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Release Date | 3/25/2013 |
| Developer | Digital Extremes |
| Publisher | Digital Extremes |
| Steam App Id | 230410 |
4. Limbus Company
As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.
Limbus Company has achieved a Player Score of 83, placing it in the #4 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 63,294 reviews on Steam. This breaks down to a total of 53,003 positive reviews and 10,291 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Limbus Company on the Steam Deck (though some functionality may be limited).
| Release Date | 2/26/2023 |
| Developer | ProjectMoon |
| Publisher | ProjectMoon |
| Steam App Id | 1973530 |
5. Destiny 2
Destiny 2 is an action MMO with a single evolving world that you and your friends can join anytime, anywhere, absolutely free.
Destiny 2 has achieved a Player Score of 79, placing it in the #5 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 625,604 reviews on Steam. This breaks down to a total of 497,817 positive reviews and 127,787 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Destiny 2 on the Steam Deck.
6. Overwatch® 2
Overwatch 2 is a critically acclaimed, team-based shooter game set in an optimistic future with an evolving roster of heroes. Team up with friends and jump in today.
Overwatch® 2 has achieved a Player Score of 24, placing it in the #6 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 343,285 reviews on Steam. This breaks down to a total of 82,011 positive reviews and 261,274 negative reviews — making it "Mostly Negative" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Overwatch® 2 on the Steam Deck (though some functionality may be limited).
| Release Date | 8/10/2023 |
| Franchise | Blizzard |
| Developer | Blizzard Entertainment, Inc. |
| Publisher | Blizzard Entertainment, Inc. |
| Steam App Id | 2357570 |
7. Splitgate 2
Splitgate 2 is the only free-to-play shooter with portals, delivering next-level gunplay, fluid movement, and a constantly evolving experience, featuring a new Battle Royale where you can portal between unique worlds. Welcome to the future of sport.
Splitgate 2 has achieved a Player Score of 69, placing it in the #7 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 8,687 reviews on Steam. This breaks down to a total of 6,088 positive reviews and 2,599 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Splitgate 2 on the Steam Deck (though some functionality may be limited).
| Release Date | 5/22/2025 |
| Developer | 1047 Games |
| Publisher | 1047 Games |
| Steam App Id | 2918300 |
8. Borderlands 2
The Ultimate Vault Hunter’s Upgrade lets you get the most out of the Borderlands 2 experience.
Borderlands 2 has achieved a Player Score of 92, placing it in the #8 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 290,670 reviews on Steam. This breaks down to a total of 268,846 positive reviews and 21,824 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Borderlands 2 on the Steam Deck (though some functionality may be limited).
| Steam Price | $4.99 |
| Release Date | 9/20/2012 |
| Franchise | Borderlands Franchise |
| Developers | |
| Publishers | |
| Steam App Id | 49520 |
9. OBS Studio
Free and open-source software for video recording and live streaming
OBS Studio has achieved a Player Score of 93, placing it in the #9 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 37,008 reviews on Steam. This breaks down to a total of 35,246 positive reviews and 1,762 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is not possible to play or run OBS Studio on the Steam Deck.
| Release Date | 3/21/2022 |
| Developer | OBS Project |
| Publisher | OBS Project |
| Steam App Id | 1905180 |
10. The First Descendant
The First Descendant is a third-person looter shooter powered by Unreal Engine 5. Become a Descendant. Fight for the survival of humanity. Descendants have unique abilities to tackle both solo and co-op missions. Up to 4 players use varied mechanics to defeat giant bosses. BE THE FIRST DESCENDANT!
The First Descendant has achieved a Player Score of 56, placing it in the #10 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 103,339 reviews on Steam. This breaks down to a total of 58,387 positive reviews and 44,952 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run The First Descendant on the Steam Deck.
| Release Date | 6/30/2024 |
| Developer | NEXON Games Co., Ltd. |
| Publisher | NEXON |
| Steam App Id | 2074920 |
More Free Sci-fi Games
Explore even more rankings for the 100 best free Sci-fi games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 130,237 | 11/5/2020 | 67 | Free | Steam Charts | |
| 124,301 | 12/6/2024 | 79 | Free | Steam Charts | |
| 39,551 | 3/25/2013 | 87 | Free | Steam Charts | |
| 29,726 | 2/26/2023 | 83 | Free | Steam Charts | |
| 25,706 | 10/1/2019 | 79 | Free | Steam Charts | |
| 25,382 | 8/10/2023 | 24 | Free | Steam Charts | |
| 18,911 | 5/22/2025 | 69 | Free | Steam Charts | |
| 15,632 | 9/20/2012 | 92 | $4.99 | Steam Charts | |
| 14,462 | 3/21/2022 | 93 | Free | Steam Charts | |
| 5,983 | 6/30/2024 | 56 | Free | Steam Charts | |
 | 5,090 | 7/21/2020 | 88 | Free | Steam Charts | |
 | 4,071 | 3/6/2025 | 73 | Free | Steam Charts | |
 | 3,737 | 7/27/2023 | 89 | Free | Steam Charts | |
 | 3,513 | 12/29/2017 | 90 | Free | Steam Charts | |
 | 3,399 | 12/16/2010 | 73 | Free | Steam Charts | |
 | 2,967 | 10/29/2021 | 90 | Free | Steam Charts | |
 | 2,859 | 11/15/2021 | 69 | Free | Steam Charts | |
 | 2,749 | 11/3/2021 | 88 | Free | Steam Charts | |
 | 2,020 | 11/21/2024 | 75 | Free | Steam Charts | |
 | 1,911 | 8/10/2022 | 83 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2025, June 7). Steam Store. Steam Store.
- Valve Corporation. (2025, June 7). Apex Legends™ on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Marvel Rivals on Steam. Steam Store.
- Valve Corporation. (2025, May 30). Warframe on Steam. Steam Store.
- Valve Corporation. (2025, June 5). Limbus Company on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Destiny 2 on Steam. Steam Store.
- Valve Corporation. (2025, June 3). Overwatch® 2 on Steam. Steam Store.
- Valve Corporation. (2025, June 7). Splitgate 2 on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Borderlands 2 on Steam. Steam Store.
- Valve Corporation. (2025, June 7). OBS Studio on Steam. Steam Store.
- Valve Corporation. (2025, May 30). The First Descendant on Steam. Steam Store.