Free Colony Sim Games on Steam
Steam currently has 1,094 Colony 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 Colony Sim game rankings were last updated on 9/10/2025.
Looking for more? Explore other lists such as:
- Best colony sim games on Steam
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1. My Singing Monsters
Breed them, feed them, listen to them sing! Create an island full of Singing Monsters, then watch your song evolve as you breed and upgrade them. Design and build unique decorations to make your world look just the way you want. You'll love exploring the wonderful fantasy land of the Monster World!
My Singing Monsters holds the #1 spot for "best free Colony Sim game on Steam" with a Player Score of 92. Its score was calculated by analyzing a total of 42,833 reviews on Steam. This breaks down to a total of 40,158 positive reviews and 2,675 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 | 3/24/2021 |
| Franchise | Big Blue Bubble |
| Developer | Big Blue Bubble |
| Publisher | Big Blue Bubble |
| Steam App Id | 1419170 |
2. Stronghold Kingdoms
A massively multiplayer grand strategy game, Stronghold Kingdoms is about forging alliances, political mind games, city-building and castle sieges with thousands of other players!
Stronghold Kingdoms has achieved a Player Score of 63, placing it in the #2 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 9,396 reviews on Steam. This breaks down to a total of 6,003 positive reviews and 3,393 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 Stronghold Kingdoms on the Steam Deck.
| Release Date | 2/28/2012 |
| Franchise | Firefly Studios |
| Developer | FireFly Studios |
| Publisher | FireFly Studios |
| Steam App Id | 47410 |
3. DFHack - Dwarf Fortress Modding Engine
Extensions for Dwarf Fortress, including bugfixes, interface improvements, automation agents, design blueprints, modding building blocks, and other tools.
DFHack - Dwarf Fortress Modding Engine has achieved a Player Score of 93, placing it in the #3 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 814 reviews on Steam. This breaks down to a total of 809 positive reviews and 5 negative reviews — making it "Overwhelmingly Positive" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play DFHack - Dwarf Fortress Modding Engine on the Steam Deck (though some functionality may be limited).
| Release Date | 4/14/2023 |
| Developer | The DFHack Team |
| Publisher | The DFHack Team |
| Steam App Id | 2346660 |
4. Shelter 69
Expand your shelter in a unique take on the post-apocalypse genre, thrown straight into a wild world where women reign supreme across the wastelands. You are the last male, and all is for your taking.
Shelter 69 has achieved a Player Score of 61, placing it in the #4 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 1,857 reviews on Steam. This breaks down to a total of 1,161 positive reviews and 696 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Shelter 69 on the Steam Deck (though some functionality may be limited).
5. Celestial Empire: Prologue
Embrace your duties as a new provincial governor. Experience the beauty of ancient China, design the city of your dreams, and take care of your people’s needs. Earn the Gods’ favor to maintain the Mandate of Heaven for the ruling dynasty.
Celestial Empire: Prologue has achieved a Player Score of 62, placing it in the #5 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 11 reviews on Steam. This breaks down to a total of 8 positive reviews and 3 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 | 9/10/2025 |
| Franchise | President Studio |
| Developer | President Studio |
| Publishers | |
| Steam App Id | 1509970 |
6. Shipping Manager
Create and manage your own shipping empire. Control every aspect from route creation to marketing to staff handling and beat other managers to top the leaderboards.
Shipping Manager has achieved a Player Score of 47, placing it in the #6 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 473 reviews on Steam. This breaks down to a total of 219 positive reviews and 254 negative reviews — making it "Mixed" on Steam.
It can be played and ran on both Windows and Linux systems. At the moment, it is possible to play Shipping Manager on the Steam Deck (though some functionality may be limited).
| Release Date | 9/18/2023 |
| Developer | Trophy Games |
| Publisher | Trophy Games |
| Steam App Id | 2445660 |
7. Build Master: MarsVille
Build Master: MarsVille is a city-building and strategy game that invites you to create your Martian colony with your engineering genius and building skills. Form alliances, trade resources, and conquer rival colonies. Embrace the challenge and become the ultimate Build Master on Mars!
Build Master: MarsVille has achieved a Player Score of 43, placing it in the #7 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 227 reviews on Steam. This breaks down to a total of 93 positive reviews and 134 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Build Master: MarsVille on the Steam Deck (though some functionality may be limited).
| Release Date | 12/12/2023 |
| Developers | |
| Publisher | FIRST FUN HONG KONG LIMITED |
| Steam App Id | 2366120 |
8. Diplomacy is Not an Option: Shareware
Diplomacy is Not an Option: Shareware is a free prequel to the original game. In a medieval fantasy world, you are to build settlements, raise huge armies, and defend against massive hordes of enemies. Learn how Ironbrow clan shaped the world's map the first time - if you survive, that is.
Diplomacy is Not an Option: Shareware has achieved a Player Score of 83, placing it in the #8 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 197 reviews on Steam. This breaks down to a total of 180 positive reviews and 17 negative reviews — making it "Very 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.
9. Egg Surprise
A fun clicker with economic simulation in the penguin kingdom. Obtain rare collections, venture into dangerous dungeons, and build your own civilization!
Egg Surprise has achieved a Player Score of 66, placing it in the #9 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 1,201 reviews on Steam. This breaks down to a total of 817 positive reviews and 384 negative reviews — making it "Mixed" on Steam.
It 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 | 6/20/2024 |
| Developer | SQRT Games |
| Publisher | SQRT Games |
| Steam App Id | 3017120 |
10. Romans: Age of Caesar
Build Rome Together! A co-operative grand strategy MMO from a team of veteran city builders, Romans: Age of Caesar is the latest historical strategy game from Firefly Studios.
Romans: Age of Caesar has achieved a Player Score of 46, placing it in the #10 spot for the best free Colony Sim games. Its score was calculated by analyzing a total of 423 reviews on Steam. This breaks down to a total of 190 positive reviews and 233 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Romans: Age of Caesar on the Steam Deck (though some functionality may be limited).
| Release Date | 4/27/2022 |
| Franchise | Firefly Studios |
| Developer | FireFly Studios |
| Publisher | FireFly Studios |
| Steam App Id | 872570 |
More Free Colony Sim Games
Explore even more rankings for the 84 best free Colony Sim games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 589 | 3/24/2021 | 92 | Free | Steam Charts | |
| 357 | 2/28/2012 | 63 | Free | Steam Charts | |
| 109 | 4/14/2023 | 93 | Free | Steam Charts | |
| 104 | 5/16/2022 | 61 | Free | Steam Charts | |
| 84 | 9/10/2025 | 62 | Free | Steam Charts | |
| 64 | 9/18/2023 | 47 | Free | Steam Charts | |
| 62 | 12/12/2023 | 43 | Free | Steam Charts | |
| 47 | 4/30/2025 | 83 | Free | Steam Charts | |
| 35 | 6/20/2024 | 66 | Free | Steam Charts | |
| 34 | 4/27/2022 | 46 | Free | Steam Charts | |
 | 32 | 10/21/2015 | 89 | Free | Steam Charts | |
 | 17 | 9/12/2024 | 55 | Free | Steam Charts | |
 | 12 | 9/21/2023 | 55 | Free | Steam Charts | |
 | 12 | 9/8/2023 | 68 | Free | Steam Charts | |
 | 9 | 3/24/2025 | 70 | Free | Steam Charts | |
 | 9 | 1/22/2021 | 61 | Free | Steam Charts | |
 | 7 | 2/21/2018 | 52 | Free | Steam Charts | |
 | 6 | 7/26/2024 | 80 | Free | Steam Charts | |
 | 5 | 4/22/2025 | 60 | Free | Steam Charts | |
 | 3 | 10/7/2022 | 85 | 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 10). Steam Store. Steam Store.
- Valve Corporation. (2025, September 10). My Singing Monsters on Steam. Steam Store.
- Valve Corporation. (2025, September 5). Stronghold Kingdoms on Steam. Steam Store.
- Valve Corporation. (2025, August 28). DFHack - Dwarf Fortress Modding Engine on Steam. Steam Store.
- Valve Corporation. (2025, September 9). Shelter 69 on Steam. Steam Store.
- Valve Corporation. (2025, September 11). Celestial Empire: Prologue on Steam. Steam Store.
- Valve Corporation. (2025, August 13). Shipping Manager on Steam. Steam Store.
- Valve Corporation. (2025, September 5). Build Master: MarsVille on Steam. Steam Store.
- Valve Corporation. (2025, August 28). Diplomacy is Not an Option: Shareware on Steam. Steam Store.
- Valve Corporation. (2025, September 9). Egg Surprise on Steam. Steam Store.
- Valve Corporation. (2025, September 10). Romans: Age of Caesar on Steam. Steam Store.