Best Sci-fi Steam Deck Games
Steam currently has 11,818 Sci-fi games, but not all of them can be played on the Steam Deck. Explore our list with 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 4/3/2025.
Looking for more? Explore other lists such as:
- Best sci-fi games on Steam
- Best sci-fi Steam games for Mac
- 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. 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 Sci-fi Steam Deck game" with a Player Score of 98. Its score was calculated by analyzing a total of 429,874 reviews on Steam. This breaks down to a total of 424,241 positive reviews and 5,633 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on both Windows 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 Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 175,716 reviews on Steam. This breaks down to a total of 173,025 positive reviews and 2,691 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on both Windows 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 Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 207,552 reviews on Steam. This breaks down to a total of 203,337 positive reviews and 4,215 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
Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.
Half-Life 2 has achieved a Player Score of 96, placing it in the #4 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 241,813 reviews on Steam. This breaks down to a total of 236,017 positive reviews and 5,796 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $9.99 to play and can be played and ran on both Windows and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
5. ULTRAKILL
ULTRAKILL is a fast-paced ultraviolent retro FPS combining the skill-based style scoring from character action games with unadulterated carnage inspired by the best shooters of the '90s. Rip apart your foes with varied destructive weapons and shower in their blood to regain your health.
ULTRAKILL has achieved a Player Score of 96, placing it in the #5 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 162,104 reviews on Steam. This breaks down to a total of 158,429 positive reviews and 3,675 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $24.99 to play and can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $24.99 |
| Release Date | 9/3/2020 |
| Franchise | New Blood Interactive |
| Developer | Arsi "Hakita" Patala |
| Publisher | New Blood Interactive |
| Steam App Id | 1229490 |
6. 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 #6 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 70,391 reviews on Steam. This breaks down to a total of 69,005 positive reviews and 1,386 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 |
7. Split Fiction
Embrace mind-blowing moments as you’re pulled deep into the many worlds of Split Fiction, a boundary-pushing co-op adventure.
Split Fiction has achieved a Player Score of 96, placing it in the #7 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 68,149 reviews on Steam. This breaks down to a total of 66,664 positive reviews and 1,485 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $49.99 to play and can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $49.99 |
| Release Date | 3/6/2025 |
| Franchise | Electronic Arts |
| Developer | Hazelight Studios |
| Publisher | Electronic Arts |
| Steam App Id | 2001120 |
8. ATRI -My Dear Moments-
"As the world sank, I found you." In the near future, a sudden and unexplained sea rise has left much of human civilization underwater. In a little town slowly being enveloped by the ocean, an unforgettable summer is about to begin for a boy and a mysterious robot girl...
ATRI -My Dear Moments- has achieved a Player Score of 96, placing it in the #8 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 20,603 reviews on Steam. This breaks down to a total of 20,311 positive reviews and 292 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $20.99 to play and can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $20.99 |
| Release Date | 6/18/2020 |
| Franchise | ANIPLEX.EXE |
| Developers | |
| Publishers | |
| Steam App Id | 1230140 |
9. 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 #9 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 309,889 reviews on Steam. This breaks down to a total of 300,689 positive reviews and 9,200 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 | 1/23/2018 |
| Franchise | Unknown Worlds |
| Developer | Unknown Worlds Entertainment |
| Publisher | Unknown Worlds Entertainment |
| Steam App Id | 264710 |
10. 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 #10 spot for the best Sci-fi Steam Deck games. Its score was calculated by analyzing a total of 154,444 reviews on Steam. This breaks down to a total of 150,218 positive reviews and 4,226 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 |
More Sci-fi Steam Deck Verified Games
Explore even more rankings for the 10 best Sci-fi games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 2,780 | 4/18/2011 | 98 | $9.99 | Steam Charts | |
| 617 | 10/10/2007 | 97 | $9.99 | Steam Charts | |
| 31,824 | 10/17/2018 | 97 | $34.99 | Steam Charts | |
| 3,187 | 11/16/2004 | 96 | $9.99 | Steam Charts | |
| 3,799 | 9/3/2020 | 96 | $24.99 | Steam Charts | |
| 271 | 4/18/2019 | 96 | $14.99 | Steam Charts | |
| 18,619 | 3/6/2025 | 96 | $49.99 | Steam Charts | |
| 47 | 6/18/2020 | 96 | $20.99 | Steam Charts | |
| 4,887 | 1/23/2018 | 96 | $29.99 | Steam Charts | |
| 993 | 7/19/2022 | 96 | $17.99 | 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. (2025, April 3). Steam Store. Steam Store.
- Valve Corporation. (2025, April 3). Portal 2 on Steam. Steam Store.
- Valve Corporation. (2025, April 11). Portal on Steam. Steam Store.
- Valve Corporation. (2025, April 12). RimWorld on Steam. Steam Store.
- Valve Corporation. (2025, March 21). Half-Life 2 on Steam. Steam Store.
- Valve Corporation. (2025, March 30). ULTRAKILL on Steam. Steam Store.
- Valve Corporation. (2025, March 24). Katana ZERO on Steam. Steam Store.
- Valve Corporation. (2025, April 13). Split Fiction on Steam. Steam Store.
- Valve Corporation. (2025, March 27). ATRI -My Dear Moments- on Steam. Steam Store.
- Valve Corporation. (2025, April 3). Subnautica on Steam. Steam Store.
- Valve Corporation. (2025, April 12). Stray on Steam. Steam Store.