Best Sci-fi Games on Steam (for Mac OS)
Steam currently has 9,413 Sci-fi games, but not all of them are able to be played on Mac. Explore our list of the best picks ranked by Player Score. Our Player Score rankings are calculated directly from reviews left on the Steam store and will be updated in real-time as more players leave their feedback. Sci-fi game rankings were last updated on 5/18/2024.
Looking for more? Explore other lists such as:
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1. Portal 2
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
Portal 2 holds the #1 spot for "best Mac OS Sci-fi game on Steam" with a Player Score of 98. Its score was calculated by analyzing a total of 392,246 reviews on Steam. This breaks down to a total of 387,237 positive reviews and 5,009 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
2. Portal
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
Portal has achieved a Player Score of 97, placing it in the #2 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 156,541 reviews on Steam. This breaks down to a total of 154,187 positive reviews and 2,354 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
3. RimWorld
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
RimWorld has achieved a Player Score of 97, placing it in the #3 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 186,560 reviews on Steam. This breaks down to a total of 182,909 positive reviews and 3,651 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $34.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $34.99 |
| Release Date | 10/17/2018 |
| Developer | Ludeon Studios |
| Publisher | Ludeon Studios |
| Steam App Id | 294100 |
4. Half-Life 2
1998. HALF-LIFE sends a shock through the game industry with its combination of pounding action and continuous, immersive storytelling. Valve's debut title wins more than 50 game-of-the-year awards on its way to being named "Best PC Game Ever" by PC Gamer, and launches a franchise with more than eight million retail units sold worldwide.
Half-Life 2 has achieved a Player Score of 96, placing it in the #4 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 191,786 reviews on Steam. This breaks down to a total of 187,220 positive reviews and 4,566 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
5. Katana ZERO
Katana ZERO is a stylish neo-noir, action-platformer featuring breakneck action and instant-death combat. Slash, dash, and manipulate time to unravel your past in a beautifully brutal acrobatic display.
Katana ZERO has achieved a Player Score of 96, placing it in the #5 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 64,841 reviews on Steam. This breaks down to a total of 63,585 positive reviews and 1,256 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $14.99 to play and can be played and ran on both Windows and Mac systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $14.99 |
| Release Date | 4/18/2019 |
| Developer | Askiisoft |
| Publisher | Devolver Digital |
| Steam App Id | 460950 |
6. Stray
Lost, alone and separated from family, a stray cat must untangle an ancient mystery to escape a long-forgotten cybercity and find their way home.
Stray has achieved a Player Score of 96, placing it in the #6 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 138,462 reviews on Steam. This breaks down to a total of 134,715 positive reviews and 3,747 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on both Windows and Mac systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $29.99 |
| Release Date | 7/19/2022 |
| Franchise | Annapurna Interactive |
| Developer | BlueTwelve Studio |
| Publisher | Annapurna Interactive |
| Steam App Id | 1332010 |
7. Subnautica
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
Subnautica has achieved a Player Score of 96, placing it in the #7 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 269,387 reviews on Steam. This breaks down to a total of 260,848 positive reviews and 8,539 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on both Windows and Mac systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $29.99 |
| Release Date | 1/24/2018 |
| Franchise | Unknown Worlds |
| Developer | Unknown Worlds Entertainment |
| Publisher | Unknown Worlds Entertainment |
| Steam App Id | 264710 |
8. Oxygen Not Included
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
Oxygen Not Included has achieved a Player Score of 95, placing it in the #8 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 114,596 reviews on Steam. This breaks down to a total of 110,845 positive reviews and 3,751 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $8.49 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $8.49 |
| Release Date | 7/30/2019 |
| Franchise | Klei |
| Developer | Klei Entertainment |
| Publisher | Klei Entertainment |
| Steam App Id | 457140 |
9. Half-Life
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
Half-Life has achieved a Player Score of 95, placing it in the #9 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 126,512 reviews on Steam. This breaks down to a total of 122,200 positive reviews and 4,312 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
10. Half-Life 2: Episode Two
Half-Life® 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life® adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions.
Half-Life 2: Episode Two has achieved a Player Score of 95, placing it in the #10 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 39,616 reviews on Steam. This breaks down to a total of 38,455 positive reviews and 1,161 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $7.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
More Sci-fi Mac Games on Steam
Explore even more rankings for the 10 best Sci-fi games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
 | 1,560 | 4/18/2011 | 98 | $9.99 | Steam Charts | |
 | 399 | 10/10/2007 | 97 | $9.99 | Steam Charts | |
 | 24,247 | 10/17/2018 | 97 | $34.99 | Steam Charts | |
 | 592 | 11/16/2004 | 96 | $9.99 | Steam Charts | |
 | 269 | 4/18/2019 | 96 | $14.99 | Steam Charts | |
 | 300 | 7/19/2022 | 96 | $29.99 | Steam Charts | |
 | 2,428 | 1/24/2018 | 96 | $29.99 | Steam Charts | |
 | 6,867 | 7/30/2019 | 95 | $8.49 | Steam Charts | |
 | 671 | 11/19/1998 | 95 | $9.99 | Steam Charts | |
 | 102 | 10/10/2007 | 95 | $7.99 | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Reviews 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, May 18). Steam Store. Steam Store.
- Valve Corporation. (2024, May 18). Portal 2 on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Portal on Steam. Steam Store.
- Valve Corporation. (2024, May 16). RimWorld on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Half-Life 2 on Steam. Steam Store.
- Valve Corporation. (2024, March 25). Katana ZERO on Steam. Steam Store.
- Valve Corporation. (2024, May 16). Stray on Steam. Steam Store.
- Valve Corporation. (2024, May 19). Subnautica on Steam. Steam Store.
- Valve Corporation. (2024, May 19). Oxygen Not Included on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Half-Life on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Half-Life 2: Episode Two on Steam. Steam Store.