Free Sci-fi Games on Steam
Steam currently has 10,628 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 11/1/2024.
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 68. Its score was calculated by analyzing a total of 956,642 reviews on Steam. This breaks down to a total of 650,721 positive reviews and 305,921 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. 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.
Crab Game has achieved a Player Score of 91, placing it in the #2 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 151,396 reviews on Steam. This breaks down to a total of 138,930 positive reviews and 12,466 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 Crab Game on the Steam Deck (though some functionality may be limited).
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 596,563 reviews on Steam. This breaks down to a total of 520,886 positive reviews and 75,677 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. 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 80, placing it in the #4 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 614,378 reviews on Steam. This breaks down to a total of 491,822 positive reviews and 122,556 negative reviews — making it "Very 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.
5. 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 22, placing it in the #5 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 310,072 reviews on Steam. This breaks down to a total of 65,083 positive reviews and 244,989 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 |
6. 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 55, placing it in the #6 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 90,158 reviews on Steam. This breaks down to a total of 49,487 positive reviews and 40,671 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 |
7. 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 #7 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 28,259 reviews on Steam. This breaks down to a total of 26,957 positive reviews and 1,302 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 |
8. 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 84, placing it in the #8 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 40,278 reviews on Steam. This breaks down to a total of 34,473 positive reviews and 5,805 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 |
9. SCP: Secret Laboratory
Deep within the SCP Foundation during a containment breach, many of the anomalies have bypassed security and escaped from their chambers - without peaceful intentions. Become site personnel, a re-containment agent, or an anomalous entity and fight to take control of or escape the facility!
SCP: Secret Laboratory has achieved a Player Score of 91, placing it in the #9 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 202,078 reviews on Steam. This breaks down to a total of 185,030 positive reviews and 17,048 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 SCP: Secret Laboratory on the Steam Deck (though some functionality may be limited).
| Release Date | 12/29/2017 |
| Developer | Northwood Studios |
| Publisher | Northwood Studios |
| Steam App Id | 700330 |
10. STAR WARS™: The Old Republic™
STAR WARS™: The Old Republic™ is a free-to-play MMORPG that puts you at the center of your own story-driven saga. Play as a Jedi, Sith, Bounty Hunter, or one of many other iconic STAR WARS roles in the galaxy far, far away over three thousand years before the classic films.
STAR WARS™: The Old Republic™ has achieved a Player Score of 88, placing it in the #10 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 63,403 reviews on Steam. This breaks down to a total of 56,865 positive reviews and 6,538 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 STAR WARS™: The Old Republic™ on the Steam Deck (though some functionality may be limited).
| Release Date | 7/21/2020 |
| Franchise | BioWare EA |
| Developers | |
| Publisher | Electronic Arts |
| Steam App Id | 1286830 |
More Free Sci-fi Games
Explore even more rankings for the 100 best free Sci-fi games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 57,977 | 11/5/2020 | 68 | Free | Steam Charts | |
| 47,542 | 10/29/2021 | 91 | Free | Steam Charts | |
| 46,814 | 3/25/2013 | 87 | Free | Steam Charts | |
| 41,357 | 10/1/2019 | 80 | Free | Steam Charts | |
| 33,202 | 8/10/2023 | 22 | Free | Steam Charts | |
| 11,116 | 6/30/2024 | 55 | Free | Steam Charts | |
| 9,634 | 3/21/2022 | 93 | Free | Steam Charts | |
| 8,634 | 2/26/2023 | 84 | Free | Steam Charts | |
| 5,251 | 12/29/2017 | 91 | Free | Steam Charts | |
| 4,384 | 7/21/2020 | 88 | Free | Steam Charts | |
 | 3,827 | 12/16/2010 | 73 | Free | Steam Charts | |
 | 3,453 | 11/3/2021 | 88 | Free | Steam Charts | |
 | 3,074 | 11/15/2021 | 70 | Free | Steam Charts | |
 | 2,455 | 7/27/2023 | 88 | Free | Steam Charts | |
 | 2,220 | 8/18/2020 | 86 | Free | Steam Charts | |
 | 2,018 | 8/20/2024 | 72 | Free | Steam Charts | |
 | 1,826 | 7/18/2024 | 70 | Free | Steam Charts | |
 | 1,685 | 8/10/2022 | 84 | Free | Steam Charts | |
 | 1,619 | 5/27/2016 | 82 | Free | Steam Charts | |
 | 1,470 | 4/4/2018 | 60 | 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. (2024, November 1). Steam Store. Steam Store.
- Valve Corporation. (2024, November 1). Apex Legends™ on Steam. Steam Store.
- Valve Corporation. (2024, October 8). Crab Game on Steam. Steam Store.
- Valve Corporation. (2024, October 31). Warframe on Steam. Steam Store.
- Valve Corporation. (2024, November 2). Destiny 2 on Steam. Steam Store.
- Valve Corporation. (2024, November 1). Overwatch® 2 on Steam. Steam Store.
- Valve Corporation. (2024, October 30). The First Descendant on Steam. Steam Store.
- Valve Corporation. (2024, November 2). OBS Studio on Steam. Steam Store.
- Valve Corporation. (2024, November 2). Limbus Company on Steam. Steam Store.
- Valve Corporation. (2024, November 2). SCP: Secret Laboratory on Steam. Steam Store.
- Valve Corporation. (2024, October 18). STAR WARS™: The Old Republic™ on Steam. Steam Store.