Free Post-apocalyptic Games on Steam
Steam currently has 3,709 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 6/6/2025.
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 73. Its score was calculated by analyzing a total of 130,748 reviews on Steam. This breaks down to a total of 96,881 positive reviews and 33,867 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 555,304 reviews on Steam. This breaks down to a total of 506,450 positive reviews and 48,854 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 12,690 reviews on Steam. This breaks down to a total of 11,419 positive reviews and 1,271 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 Wuthering Waves on the Steam Deck.
| Release Date | 4/28/2025 |
| Developer | KURO GAMES |
| Publisher | KURO GAMES |
| Steam App Id | 3513350 |
4. 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 #4 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 64,112 reviews on Steam. This breaks down to a total of 48,196 positive reviews and 15,916 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 |
5. 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 38, placing it in the #5 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 5,530 reviews on Steam. This breaks down to a total of 2,050 positive reviews and 3,480 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 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 |
6. 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 #6 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 74,276 reviews on Steam. This breaks down to a total of 65,751 positive reviews and 8,525 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 |
7. 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 45, placing it in the #7 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 2,511 reviews on Steam. This breaks down to a total of 1,129 positive reviews and 1,382 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.
8. Farlight 84
1st Pet Capture Battle Royale!
Farlight 84 has achieved a Player Score of 77, placing it in the #8 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 50,541 reviews on Steam. This breaks down to a total of 39,358 positive reviews and 11,183 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 |
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 26,795 reviews on Steam. This breaks down to a total of 18,839 positive reviews and 7,956 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. Undawn
Explore, adapt, and survive in Undawn, a free-to-play open-world survival RPG for mobile and PC developed by LightSpeed Studios and published by Level Infinite. Embark on an adventure with other survivors four years after a worldwide disaster where hordes of infected roam a shattered world.
Undawn has achieved a Player Score of 54, placing it in the #10 spot for the best free Post-apocalyptic games. Its score was calculated by analyzing a total of 6,346 reviews on Steam. This breaks down to a total of 3,440 positive reviews and 2,906 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 Undawn on the Steam Deck.
| Release Date | 6/14/2023 |
| Developer | Lightspeed Studios™ |
| Publisher | Level Infinite |
| Steam App Id | 1881700 |
More Free Post-apocalyptic Games
Explore even more rankings for the 100 best free Post-apocalyptic games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 23,015 | 7/9/2024 | 73 | Free | Steam Charts | |
| 9,701 | 7/7/2017 | 90 | Free | Steam Charts | |
| 7,642 | 4/28/2025 | 88 | Free | Steam Charts | |
| 1,632 | 7/27/2017 | 74 | Free | Steam Charts | |
| 1,039 | 4/28/2025 | 38 | Free | Steam Charts | |
| 872 | 3/29/2017 | 87 | Free | Steam Charts | |
| 846 | 4/24/2025 | 45 | Free | Steam Charts | |
| 676 | 9/21/2023 | 77 | Free | Steam Charts | |
| 604 | 7/15/2019 | 69 | Free | Steam Charts | |
| 529 | 6/14/2023 | 54 | Free | Steam Charts | |
 | 495 | 11/27/2019 | 65 | Free | Steam Charts | |
 | 492 | 9/1/2022 | 57 | Free | Steam Charts | |
 | 375 | 10/19/2022 | 68 | Free | Steam Charts | |
 | 365 | 9/1/2022 | 73 | Free | Steam Charts | |
 | 313 | 4/5/2018 | 69 | Free | Steam Charts | |
 | 247 | 10/31/2013 | 89 | Free | Steam Charts | |
 | 215 | 2/2/2023 | 69 | Free | Steam Charts | |
 | 213 | 5/13/2021 | 70 | Free | Steam Charts | |
 | 210 | 10/16/2017 | 84 | Free | Steam Charts | |
 | 199 | 5/16/2022 | 62 | 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, June 6). Steam Store. Steam Store.
- Valve Corporation. (2025, June 6). Once Human on Steam. Steam Store.
- Valve Corporation. (2025, June 2). Unturned on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Wuthering Waves on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Crossout on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Infinity Nikki on Steam. Steam Store.
- Valve Corporation. (2025, May 22). Fallout Shelter on Steam. Steam Store.
- Valve Corporation. (2025, June 6). DARKEST DAYS on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Farlight 84 on Steam. Steam Store.
- Valve Corporation. (2025, June 5). Dead Frontier 2 on Steam. Steam Store.
- Valve Corporation. (2025, June 6). Undawn on Steam. Steam Store.