Best Free to Play Colony Sim Games on Steam
Check out this fantastic list of free-to-play colony sim games you can enjoy on Steam right now, updated on March 11th 2026. Looking for even more free titles? Explore the complete list of the best free to play colony sim games on Steam.
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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 997 peak concurrent players over the last day.
9.2
39,143
2,558
997
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 532 reviews of which 494 were positive and 38 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
494
38
51
players
3. 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 694 reviews of which 615 were positive and 79 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #3 spot among the most played colony sim games.
8.3
615
79
1
players
4. 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 478 reviews of which 379 were positive and 99 were negative resulting in a rating of 7.5 out of 10. The game currently holds the #4 spot among the most played colony sim games.
7.5
379
99
1
players
5. Banana Drama
Banana Drama is a free and independent RTS game. It offers a singleplayer and online multiplayer experience. Your monkey king is held captive by evil dinos - he needs help! Be part of the banana crew. Please consider giving feedback on Discord! Banana Drama is a early access, action and strategy game. Released on July 25th 2022 has received 302 reviews of which 284 were positive and 18 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #5 spot among the most played colony sim games.
8.6
284
18
6. 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 280 were positive and 141 were negative resulting in a rating of 6.4 out of 10. The game currently holds the #6 spot among the most played colony sim games.
6.4
280
141
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