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:

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™ banner

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 banner

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).

Release Date 10/29/2021
Developer Dani
Publisher Dani
Steam App Id 1782210

3. Warframe

Awaken as an unstoppable warrior and battle alongside your friends in this story-driven free-to-play online action game

Warframe banner

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 banner

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.

Release Date 10/1/2019
Franchise Destiny
Developer Bungie
Publisher Bungie
Steam App Id 1085660

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 banner

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 banner

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 banner

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 banner

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 banner

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™ banner

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.

ImageName
Actions
Apex Legends™ steam charts
57,977
11/5/2020
68
Free
Steam Charts
Crab Game steam charts
47,542
10/29/2021
91
Free
Steam Charts
Warframe steam charts
46,814
3/25/2013
87
Free
Steam Charts
Destiny 2 steam charts
41,357
10/1/2019
80
Free
Steam Charts
Overwatch® 2 steam charts
33,202
8/10/2023
22
Free
Steam Charts
The First Descendant steam charts
11,116
6/30/2024
55
Free
Steam Charts
OBS Studio steam charts
9,634
3/21/2022
93
Free
Steam Charts
Limbus Company steam charts
8,634
2/26/2023
84
Free
Steam Charts
SCP: Secret Laboratory steam charts
5,251
12/29/2017
91
Free
Steam Charts
STAR WARS™: The Old Republic™ steam charts
4,384
7/21/2020
88
Free
Steam Charts
EVE Online steam charts
3,827
12/16/2010
73
Free
Steam Charts
Cell to Singularity - Evolution Never Ends steam charts
3,453
11/3/2021
88
Free
Steam Charts
Halo Infinite steam charts
3,074
11/15/2021
70
Free
Steam Charts
Unnamed Space Idle steam charts
2,455
7/27/2023
88
Free
Steam Charts
BLEACH Brave Souls steam charts
2,220
8/18/2020
86
Free
Steam Charts
Predecessor steam charts
2,018
8/20/2024
72
Free
Steam Charts
Galaxy Idle Clicker steam charts
1,826
7/18/2024
70
Free
Steam Charts
ヘブンバーンズレッド steam charts
1,685
8/10/2022
84
Free
Steam Charts
Idling to Rule the Gods steam charts
1,619
5/27/2016
82
Free
Steam Charts
War Robots steam charts
1,470
4/4/2018
60
Free
Steam Charts
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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.

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