Best Sci-fi Games on Steam (for Mac OS)
Steam currently has 14,668 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 4/15/2026.
Looking for more? Explore other lists such as:
- Best sci-fi games on Steam
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- Best sci-fi Linux games on Steam
- Free sci-fi games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. 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 holds the #1 spot for "best Mac OS Sci-fi game on Steam" with a Player Score of 97. Its score was calculated by analyzing a total of 237,298 reviews on Steam. This breaks down to a total of 232,302 positive reviews and 4,996 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 |
2. 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 #2 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 74,654 reviews on Steam. This breaks down to a total of 73,134 positive reviews and 1,520 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 |
3. 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 #3 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 350,618 reviews on Steam. This breaks down to a total of 340,250 positive reviews and 10,368 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $7.49 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 | $7.49 |
| Release Date | 1/24/2018 |
| Franchise | Unknown Worlds |
| Developer | Unknown Worlds Entertainment |
| Publishers | |
| Steam App Id | 264710 |
4. 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 #4 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 170,305 reviews on Steam. This breaks down to a total of 165,569 positive reviews and 4,736 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $17.99 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 | $17.99 |
| Release Date | 7/19/2022 |
| Franchise | Annapurna Interactive |
| Developer | BlueTwelve Studio |
| Publisher | Annapurna Interactive |
| Steam App Id | 1332010 |
5. Rhythm Doctor
Save patients with your rhythm mastery! Rhythm Doctor is a rhythm game where you heal patients by defibrillating in time to their heartbeats. Learn each patient's unique heartbeat and defeat boss viruses trying to sabotage your rhythm, all set to heart-pumping, soul-soothing music.
Rhythm Doctor 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 26,038 reviews on Steam. This breaks down to a total of 25,572 positive reviews and 466 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $19.99 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 | $19.99 |
| Release Date | 12/6/2025 |
| Franchise | 7th Beat Games |
| Developer | 7th Beat Games |
| Publishers | |
| Steam App Id | 774181 |
6. 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 #6 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 139,388 reviews on Steam. This breaks down to a total of 134,895 positive reviews and 4,493 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $24.99 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 | $24.99 |
| Release Date | 7/30/2019 |
| Franchise | Klei |
| Developer | Klei Entertainment |
| Publisher | Klei Entertainment |
| Steam App Id | 457140 |
7. 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 #7 spot for the best Mac OS Sci-fi games. Its score was calculated by analyzing a total of 159,792 reviews on Steam. This breaks down to a total of 154,207 positive reviews and 5,585 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.
8. Z.A.T.O. // I Love the World and Everything In It
USSR, 1986. A girl goes missing in the closed city of Vorkuta-5, yet not a soul seems to be concerned. Uncover the mystery behind her disappearance and transmit your signal to the universe.
Z.A.T.O. // I Love the World and Everything In It 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 8,208 reviews on Steam. This breaks down to a total of 8,076 positive reviews and 132 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free 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.
| Release Date | 11/10/2025 |
| Developer | Ferry // Nopanamaman |
| Publisher | Ferry // Nopanamaman |
| Steam App Id | 4122860 |
9. Brotato
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.
Brotato 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 112,294 reviews on Steam. This breaks down to a total of 108,453 positive reviews and 3,841 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $3.49 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 | $3.49 |
| Release Date | 6/23/2023 |
| Franchise | Blobfish Games |
| Developer | Blobfish |
| Publisher | Blobfish |
| Steam App Id | 1942280 |
10. Outlast
Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.
Outlast 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 134,597 reviews on Steam. This breaks down to a total of 129,838 positive reviews and 4,759 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $14.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Outlast on the Steam Deck (though some functionality may be limited).
| Steam Price | $14.99 |
| Release Date | 9/4/2013 |
| Franchise | Red Barrels |
| Developer | Red Barrels |
| Publisher | Red Barrels |
| Steam App Id | 238320 |
More Sci-fi Mac Games on Steam
Explore even more rankings for the 10 best Sci-fi games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 20,241 | 10/17/2018 | 97 | $34.99 | Steam Charts | |
| 65 | 4/18/2019 | 96 | $14.99 | Steam Charts | |
| 5,376 | 1/24/2018 | 96 | $7.49 | Steam Charts | |
| 368 | 7/19/2022 | 96 | $17.99 | Steam Charts | |
| 94 | 12/6/2025 | 96 | $19.99 | Steam Charts | |
| 6,416 | 7/30/2019 | 95 | $24.99 | Steam Charts | |
| 694 | 11/19/1998 | 95 | $9.99 | Steam Charts | |
| 79 | 11/10/2025 | 95 | Free | Steam Charts | |
| 3,398 | 6/23/2023 | 95 | $3.49 | Steam Charts | |
| 328 | 9/4/2013 | 95 | $14.99 | 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. (2026, April 15). Steam Store. Steam Store.
- Valve Corporation. (2026, April 15). RimWorld on Steam. Steam Store.
- Valve Corporation. (2026, April 2). Katana ZERO on Steam. Steam Store.
- Valve Corporation. (2026, April 5). Subnautica on Steam. Steam Store.
- Valve Corporation. (2026, April 6). Stray on Steam. Steam Store.
- Valve Corporation. (2026, April 16). Rhythm Doctor on Steam. Steam Store.
- Valve Corporation. (2026, April 16). Oxygen Not Included on Steam. Steam Store.
- Valve Corporation. (2026, April 2). Half-Life on Steam. Steam Store.
- Valve Corporation. (2026, April 15). Z.A.T.O. // I Love the World and Everything In It on Steam. Steam Store.
- Valve Corporation. (2026, April 16). Brotato on Steam. Steam Store.
- Valve Corporation. (2026, April 2). Outlast on Steam. Steam Store.