Free Post-apocalyptic Games on Steam
Steam currently has 3,975 Post-apocalyptic 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 Post-apocalyptic game rankings were last updated on 9/28/2025.
Looking for more? Explore other lists such as:
- Best post-apocalyptic games on Steam
- Best post-apocalyptic Steam Deck games
- Best post-apocalyptic Steam games for Mac OS
- Best post-apocalyptic Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Once Human
Once Human is a multiplayer open-world survival game set in a strange, post-apocalyptic future. Unite with friends to fight monstrous enemies, uncover secret plots, compete for resources, and build your own territory. Once, you were merely human. Now, you have the power to remake the world.
Once Human holds the #1 spot for "best free Post-apocalyptic game on Steam" with a Player Score of 75. Its score was calculated by analyzing a total of 148,969 reviews on Steam. This breaks down to a total of 113,036 positive reviews and 35,933 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Once Human on the Steam Deck.
| Release Date | 7/9/2024 |
| Developer | Starry Studio |
| Publisher | Starry Studio |
| Steam App Id | 2139460 |
2. Unturned
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.
Unturned has achieved a Player Score of 90, placing it in the #2 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 557,546 reviews on Steam. This breaks down to a total of 508,051 positive reviews and 49,495 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 Unturned on the Steam Deck (though some functionality may be limited).
| Release Date | 7/7/2017 |
| Developer | Smartly Dressed Games |
| Publisher | Smartly Dressed Games |
| Steam App Id | 304930 |
3. Wuthering Waves
Wuthering Waves is a story-rich open-world action RPG with a high degree of freedom. You wake from your slumber as Rover, joined by a vibrant cast of Resonators on a journey to reclaim your lost memories and change the world.
Wuthering Waves has achieved a Player Score of 88, placing it in the #3 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 23,935 reviews on Steam. This breaks down to a total of 21,435 positive reviews and 2,500 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 Wuthering Waves on the Steam Deck (though some functionality may be limited).
| Release Date | 4/28/2025 |
| Developer | KURO GAMES |
| Publisher | KURO GAMES |
| Steam App Id | 3513350 |
4. Infinity Nikki
Embark on a cozy open-world adventure filled with vast landscape, mystical puzzles and unexpected platforming challenges. Dress up not just for style, but to unravel hidden mysteries, interact with a vibrant environment, and experience the freedom to explore at your own pace.
Infinity Nikki has achieved a Player Score of 44, placing it in the #4 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 7,146 reviews on Steam. This breaks down to a total of 3,083 positive reviews and 4,063 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Infinity Nikki on the Steam Deck (though some functionality may be limited).
| Release Date | 4/28/2025 |
| Developer | Infold Games |
| Publisher | Infold Games |
| Steam App Id | 3164330 |
5. Farlight 84
Hey Lightcatchers! The latest Farlight 84 update has landed, and it's bringing a massive 60-player shootout with it. Are you ready?
Farlight 84 has achieved a Player Score of 76, placing it in the #5 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 53,450 reviews on Steam. This breaks down to a total of 41,106 positive reviews and 12,344 negative reviews — making it "Mostly 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 | 9/21/2023 |
| Developer | Farlight Games |
| Publisher | Farlight Games |
| Steam App Id | 1928420 |
6. Horizon Walker
Eat God, and you will have everything—the story of a human who devoured God.
Horizon Walker has achieved a Player Score of 70, placing it in the #6 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 1,137 reviews on Steam. This breaks down to a total of 829 positive reviews and 308 negative reviews — making it "Mostly Positive" 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 | 8/25/2025 |
| Developer | Gentlemaniac |
| Publisher | Gentlemaniac |
| Steam App Id | 3279780 |
7. Crossout
Crossout - the postapocalyptic MMO action game where you can create a unique design for an armoured vehicle from dozens of parts and then drive it into multiplayer battles raging on land and in the skies alike.
Crossout has achieved a Player Score of 74, placing it in the #7 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 65,415 reviews on Steam. This breaks down to a total of 49,111 positive reviews and 16,304 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Crossout on the Steam Deck (though some functionality may be limited).
| Release Date | 7/27/2017 |
| Franchise | Gaijin Network Ltd |
| Developer | Targem Games |
| Publishers | |
| Steam App Id | 386180 |
8. Fallout Shelter
Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland.
Fallout Shelter has achieved a Player Score of 87, placing it in the #8 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 75,687 reviews on Steam. This breaks down to a total of 66,922 positive reviews and 8,765 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 | 3/29/2017 |
| Developer | Bethesda Game Studios |
| Publisher | Bethesda Softworks |
| Steam App Id | 588430 |
9. Dead Frontier 2
Survival horror MMO. As one of the few survivors of the outbreak, you must scratch a living out of the decaying ruins of society. Scavenge for supplies, improve your skills, and trade with other players. All the while, keeping your eyes peeled for the infected lurking around every corner.
Dead Frontier 2 has achieved a Player Score of 69, placing it in the #9 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 27,358 reviews on Steam. This breaks down to a total of 19,186 positive reviews and 8,172 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Dead Frontier 2 on the Steam Deck (though some functionality may be limited).
| Release Date | 7/15/2019 |
| Developer | Creaky Corpse Ltd |
| Publisher | Creaky Corpse Ltd |
| Steam App Id | 744900 |
10. DARKEST DAYS
DARKEST DAYS is a zombie shooting RPG set in a post-apocalyptic world devastated by a sudden zombie outbreak. Explore a dark yet captivating open world, build a sanctuary with fellow survivors, grow stronger, and fight for survival.
DARKEST DAYS has achieved a Player Score of 47, placing it in the #10 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 3,448 reviews on Steam. This breaks down to a total of 1,621 positive reviews and 1,827 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 DARKEST DAYS on the Steam Deck.
More Free Post-apocalyptic Games
Explore even more rankings for the 100 best free Post-apocalyptic games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 17,530 | 7/9/2024 | 75 | Free | Steam Charts | |
| 10,208 | 7/7/2017 | 90 | Free | Steam Charts | |
| 7,145 | 4/28/2025 | 88 | Free | Steam Charts | |
| 2,631 | 4/28/2025 | 44 | Free | Steam Charts | |
| 1,168 | 9/21/2023 | 76 | Free | Steam Charts | |
| 1,125 | 8/25/2025 | 70 | Free | Steam Charts | |
| 827 | 7/27/2017 | 74 | Free | Steam Charts | |
| 797 | 3/29/2017 | 87 | Free | Steam Charts | |
| 605 | 7/15/2019 | 69 | Free | Steam Charts | |
| 589 | 4/24/2025 | 47 | Free | Steam Charts | |
 | 481 | 11/27/2019 | 66 | Free | Steam Charts | |
 | 365 | 9/1/2022 | 73 | Free | Steam Charts | |
 | 315 | 6/14/2023 | 54 | Free | Steam Charts | |
 | 292 | 9/1/2022 | 56 | Free | Steam Charts | |
 | 286 | 10/19/2022 | 67 | Free | Steam Charts | |
 | 235 | 2/2/2023 | 69 | Free | Steam Charts | |
 | 227 | 4/5/2018 | 69 | Free | Steam Charts | |
 | 193 | 10/31/2013 | 89 | Free | Steam Charts | |
 | 157 | 5/23/2023 | 71 | Free | Steam Charts | |
 | 120 | 5/16/2022 | 61 | Free | Steam Charts |
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. (2025, September 28). Steam Store. Steam Store.
- Valve Corporation. (2025, September 28). Once Human on Steam. Steam Store.
- Valve Corporation. (2025, September 29). Unturned on Steam. Steam Store.
- Valve Corporation. (2025, September 26). Wuthering Waves on Steam. Steam Store.
- Valve Corporation. (2025, September 29). Infinity Nikki on Steam. Steam Store.
- Valve Corporation. (2025, September 25). Farlight 84 on Steam. Steam Store.
- Valve Corporation. (2025, September 29). Horizon Walker on Steam. Steam Store.
- Valve Corporation. (2025, September 29). Crossout on Steam. Steam Store.
- Valve Corporation. (2025, September 30). Fallout Shelter on Steam. Steam Store.
- Valve Corporation. (2025, September 17). Dead Frontier 2 on Steam. Steam Store.
- Valve Corporation. (2025, September 28). DARKEST DAYS on Steam. Steam Store.