Check out this fantastic list of free-to-play colony sim games you can enjoy on Steam right now, updated on May 14th 2026. Looking for even more free titles? Explore the complete list of the best free to play colony sim games on Steam.
More Games
1. My Singing Monsters
Dive into the Musical World of My Singing Monsters! Breed them, feed them, listen to them sing! Breed & collect a menagerie of Monsters, each a living instrument! Build your paradise across 35+ Islands, customize your world, and enjoy endless music! There's never a dull moment in the Monster World! My Singing Monsters is a creature collector, simulation and casual game. Released on March 24th 2021 has received 41,701 reviews of which 39,143 were positive and 2,558 were negative resulting in an impressive rating of 9.2 out of 10. The game has hit the top spot as the #1 most played colony sim game, thanks to its 1,173 peak concurrent players over the last day.
9.2
39,143
2,558
1,173
players
2. 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 is a strategy, city builder and colony sim game. Released on April 30th 2025 has received 660 reviews of which 606 were positive and 54 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #2 spot among the most played colony sim games.
8.6
606
54
58
players
3. Don't get lost
A procedurally-generated, open-world, first-person colony sim. Build colonies in an infinite world, alone or with friends via Steam or self-hosted multiplayer. Don't get lost is a colony sim, multiplayer and procedural generation game. Released on February 01st 2023 has received 475 reviews of which 375 were positive and 100 were negative resulting in a rating of 7.4 out of 10. The game currently holds the #3 spot among the most played colony sim games.
7.4
375
100
1
players
4. Colony Simulator
Can your Colony survive 10 days or more in the desert? Find food, build your colony, recruit new workers, feed your population, craft tools and equipment, cook food and research technologies! Colony Simulator is a simulation, city builder and colony sim game. Released on February 08th 2022 has received 421 reviews of which 279 were positive and 142 were negative resulting in a rating of 6.4 out of 10. The game currently holds the #4 spot among the most played colony sim games.
6.4
279
142
1
players
5. Terraformers: First Steps on Mars
Terraformers: First Steps on Mars is a free prologue of Terraformers, featuring an exclusive challenge to lead humanity's first attempt at settling the Red Planet. Terraformers: First Steps on Mars is a strategy, simulation and colony sim game. Released on October 23rd 2021 has received 699 reviews of which 619 were positive and 80 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #5 spot among the most played colony sim games.
8.3
619
80
More Colony Sim & Related Games
Love Colony Sim games? Dive into even more! Our extensive collection is ready to be explored with these easy links. Filter by price, uncover new titles and grab incredible deals to pinpoint your ideal game.