Free Outbreak Sim Games on Steam
Steam currently has 183 Outbreak Sim 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 Outbreak Sim game rankings were last updated on 5/16/2024.
Looking for more? Explore other lists such as:
- Best outbreak sim games on Steam
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- Free Steam games
- Most played Steam games
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1. State of Survival
Survive the Zombies War in this RPG game of Apocalypse and Survival
State of Survival holds the #1 spot for "best free Outbreak Sim game on Steam" with a Player Score of 55. Its score was calculated by analyzing a total of 312 reviews on Steam. This breaks down to a total of 174 positive reviews and 138 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 State of Survival on the Steam Deck.
| Release Date | 8/2/2023 |
| Developer | FunPlus International AG |
| Publisher | FunPlus International AG |
| Steam App Id | 2485460 |
2. Infection Free Zone – Prologue
Experience the first 8 days of the Zone in the Prologue to the widely anticipated post-apocalyptic city-builder game. Lead the survivors, rebuild the city, and fight against the deadly hordes of the infected. Play on 6 different real cities from around the world.
Infection Free Zone – Prologue has achieved a Player Score of 89, placing it in the #2 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 4,307 reviews on Steam. This breaks down to a total of 3,972 positive reviews and 335 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 Infection Free Zone – Prologue on the Steam Deck (though some functionality may be limited).
| Release Date | 10/19/2023 |
| Franchise | Games Operators |
| Developer | Jutsu Games |
| Publisher | Games Operators |
| Steam App Id | 2485640 |
3. Post-Apo Builder: Prologue
Discover a post-apocalyptic world Collect resources and manage people Build your colony on the remains of an oil tanker Prepare supplies and vehicles for a dangerous expedition. Complete challenging tasks from the council of elders
Post-Apo Builder: Prologue has achieved a Player Score of 65, placing it in the #3 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 380 reviews on Steam. This breaks down to a total of 258 positive reviews and 122 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 Post-Apo Builder: Prologue on the Steam Deck.
| Release Date | 8/2/2023 |
| Franchise | G-DEVS Games |
| Developer | Septarian Games |
| Publishers | |
| Steam App Id | 2130380 |
4. Go Go Zombies
Sweet raging fast zombie revenge!
Go Go Zombies has achieved a Player Score of 75, placing it in the #4 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 16 reviews on Steam. This breaks down to a total of 15 positive reviews and 1 negative reviews — making it "Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Go Go Zombies on the Steam Deck (though some functionality may be limited).
| Release Date | 3/7/2024 |
| Developer | 80_boom |
| Publishers | |
| Steam App Id | 2558390 |
5. 防疫英雄
这是一款休闲益智类游戏。根据经典的PVZ类游戏的核心玩法的基础上，创新题材，创新无尽模式。
防疫英雄 has achieved a Player Score of 62, placing it in the #5 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 85 reviews on Steam. This breaks down to a total of 56 positive reviews and 29 negative reviews — making it "Mixed" 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.
6. Cat Colony Crisis
You are tasked with helping a colony ship full of space-faring cats deal with a mysterious disease outbreak! Will you act fast and stop the spread of this disease or will it spread unchecked and ravage your Cat Colony.
Cat Colony Crisis has achieved a Player Score of 79, placing it in the #6 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 50 reviews on Steam. This breaks down to a total of 46 positive reviews and 4 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 2/9/2021 |
| Developer | Devil's Cider Games |
| Publisher | Devil's Cider Games |
| Steam App Id | 1516760 |
7. Plane Accident: Prologue
Dive into the heart of aviation mysteries in "Plane Accident: Prologue." Explore realistic crash sites, analyze evidence, and solve puzzles. Unveil the truth in this thrilling prelude to the full "Plane Accident" experience.
Plane Accident: Prologue has achieved a Player Score of 65, placing it in the #7 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 34 reviews on Steam. This breaks down to a total of 25 positive reviews and 9 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 | 1/18/2024 |
| Franchise | Duality Games |
| Developers | |
| Publishers | |
| Steam App Id | 2104670 |
8. Outpost Defender 2-Beta
The Space-Outpost is under assault! You must defend it. Fight off infinite waves of alien invaders. Survive as long as possible. A retro/arcade pixel-art outbreak challenge to set the highest score! Single-player and Local Co-Op enabled.
Outpost Defender 2-Beta has achieved a Player Score of 77, placing it in the #8 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 13 reviews on Steam. This breaks down to a total of 13 positive reviews and 0 negative reviews — making it "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 | 5/10/2022 |
| Developer | FluffyPants Games |
| Publisher | FluffyPants Games |
| Steam App Id | 1980520 |
9. Distancing
Distancing is a social distancing game where you are going to a party, but on the way you need to try and keep the social distancing.
Distancing has achieved a Player Score of 72, placing it in the #9 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 153 reviews on Steam. This breaks down to a total of 119 positive reviews and 34 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 | 3/17/2021 |
| Developers | |
| Publishers | |
| Steam App Id | 1562860 |
10. Doomsday Dispute
Doomsday Dispute introduces a post-apocalypse world where you need to survive and find other survivors to start a new civilization.
Doomsday Dispute has achieved a Player Score of 67, placing it in the #10 spot for the best free Outbreak Sim games. Its score was calculated by analyzing a total of 116 reviews on Steam. This breaks down to a total of 84 positive reviews and 32 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 Doomsday Dispute on the Steam Deck.
| Release Date | 11/18/2021 |
| Developer | Doomsday Dispute |
| Publisher | Doomsday Dispute |
| Steam App Id | 1792710 |
More Free Outbreak Sim Games
Explore even more rankings for the 16 best free Outbreak Sim games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
 | 219 | 8/2/2023 | 55 | Free | Steam Charts | |
 | 21 | 10/19/2023 | 89 | Free | Steam Charts | |
 | 3 | 8/2/2023 | 65 | Free | Steam Charts | |
 | 1 | 3/7/2024 | 75 | Free | Steam Charts | |
 | 1 | 6/23/2022 | 62 | Free | Steam Charts | |
 | 1 | 2/9/2021 | 79 | Free | Steam Charts | |
 | 1 | 1/18/2024 | 65 | Free | Steam Charts | |
 | 1 | 5/10/2022 | 77 | Free | Steam Charts | |
 | 1 | 3/17/2021 | 72 | Free | Steam Charts | |
 | 1 | 11/18/2021 | 67 | Free | Steam Charts | |
 | 1 | 1/27/2023 | 65 | Free | Steam Charts | |
 | 1 | 4/7/2023 | 53 | Free | Steam Charts | |
 | 1 | 6/17/2022 | 80 | Free | Steam Charts | |
 | 1 | 8/9/2022 | 76 | Free | Steam Charts | |
 | 1 | 1/8/2024 | 79 | Free | Steam Charts | |
 | 0 | 3/9/2023 | 47 | 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. (2024, May 16). Steam Store. Steam Store.
- Valve Corporation. (2024, May 16). State of Survival on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Infection Free Zone – Prologue on Steam. Steam Store.
- Valve Corporation. (2024, May 18). Post-Apo Builder: Prologue on Steam. Steam Store.
- Valve Corporation. (2024, April 19). Go Go Zombies on Steam. Steam Store.
- Valve Corporation. (2024, April 20). 防疫英雄 on Steam. Steam Store.
- Valve Corporation. (2024, March 16). Cat Colony Crisis on Steam. Steam Store.
- Valve Corporation. (2024, May 13). Plane Accident: Prologue on Steam. Steam Store.
- Valve Corporation. (2024, March 27). Outpost Defender 2-Beta on Steam. Steam Store.
- Valve Corporation. (2024, March 3). Distancing on Steam. Steam Store.
- Valve Corporation. (2024, March 12). Doomsday Dispute on Steam. Steam Store.