Free Sci-fi Games on Steam

Steam currently has 10,805 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 11/20/2024.

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 67. Its score was calculated by analyzing a total of 963,819 reviews on Steam. This breaks down to a total of 651,996 positive reviews and 311,823 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. 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 #2 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 598,708 reviews on Steam. This breaks down to a total of 522,945 positive reviews and 75,763 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

3. 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 #3 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 151,445 reviews on Steam. This breaks down to a total of 138,952 positive reviews and 12,493 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

4. 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 #4 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 314,031 reviews on Steam. This breaks down to a total of 66,812 positive reviews and 247,219 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

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 banner

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 615,287 reviews on Steam. This breaks down to a total of 492,450 positive reviews and 122,837 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

6. Strinova

Strinova is an anime-style third-person tactical competitive shooter. Switch freely between three-dimensional and two-dimensional forms in this one-of-a-kind game that offers a unique tactical shooting system for an unparalleled experience.

Strinova banner

Strinova has achieved a Player Score of 60, placing it in the #6 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 1,861 reviews on Steam. This breaks down to a total of 1,142 positive reviews and 719 negative reviews — making it "Mixed" on Steam.

It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.

Release Date 11/21/2024
Developer iDreamSky
Publisher iDreamSky
Steam App Id 1282270

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 28,996 reviews on Steam. This breaks down to a total of 27,668 positive reviews and 1,328 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. 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 #8 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 91,396 reviews on Steam. This breaks down to a total of 50,353 positive reviews and 41,043 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

9. 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 #9 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 41,555 reviews on Steam. This breaks down to a total of 35,683 positive reviews and 5,872 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

10. 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 #10 spot for the best free Sci-fi games. Its score was calculated by analyzing a total of 203,136 reviews on Steam. This breaks down to a total of 185,973 positive reviews and 17,163 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

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
74,551
11/5/2020
67
Free
Steam Charts
Warframe steam charts
48,764
3/25/2013
87
Free
Steam Charts
Crab Game steam charts
48,502
10/29/2021
91
Free
Steam Charts
Overwatch® 2 steam charts
38,430
8/10/2023
22
Free
Steam Charts
Destiny 2 steam charts
38,415
10/1/2019
79
Free
Steam Charts
Strinova steam charts
23,783
11/21/2024
60
Free
Steam Charts
OBS Studio steam charts
11,819
3/21/2022
93
Free
Steam Charts
The First Descendant steam charts
9,804
6/30/2024
55
Free
Steam Charts
Limbus Company steam charts
9,202
2/26/2023
84
Free
Steam Charts
SCP: Secret Laboratory steam charts
5,920
12/29/2017
91
Free
Steam Charts
STAR WARS™: The Old Republic™ steam charts
5,904
7/21/2020
88
Free
Steam Charts
EVE Online steam charts
4,684
12/16/2010
73
Free
Steam Charts
Unnamed Space Idle steam charts
4,374
7/27/2023
88
Free
Steam Charts
Cell to Singularity - Evolution Never Ends steam charts
3,923
11/3/2021
88
Free
Steam Charts
Halo Infinite steam charts
3,369
11/15/2021
70
Free
Steam Charts
Predecessor steam charts
2,386
8/20/2024
72
Free
Steam Charts
BLEACH Brave Souls steam charts
2,216
8/18/2020
86
Free
Steam Charts
War Robots steam charts
1,796
4/4/2018
60
Free
Steam Charts
Galaxy Idle Clicker steam charts
1,770
7/18/2024
70
Free
Steam Charts
ヘブンバーンズレッド steam charts
1,588
8/10/2022
84
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 20). Steam Store. Steam Store.
  • Valve Corporation. (2024, November 20). Apex Legends™ on Steam. Steam Store.
  • Valve Corporation. (2024, November 20). Warframe on Steam. Steam Store.
  • Valve Corporation. (2024, October 8). Crab Game on Steam. Steam Store.
  • Valve Corporation. (2024, November 21). Overwatch® 2 on Steam. Steam Store.
  • Valve Corporation. (2024, November 22). Destiny 2 on Steam. Steam Store.
  • Valve Corporation. (2024, November 23). Strinova on Steam. Steam Store.
  • Valve Corporation. (2024, November 21). OBS Studio on Steam. Steam Store.
  • Valve Corporation. (2024, November 22). The First Descendant on Steam. Steam Store.
  • Valve Corporation. (2024, November 23). Limbus Company on Steam. Steam Store.
  • Valve Corporation. (2024, November 23). SCP: Secret Laboratory on Steam. Steam Store.

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