Most Played Colony Sim Games on Steam
Take a look at the top colony sim games that are currently attracting the largest player bases on the Steam platform, as of July 30th 2025. Want to explore even more colony sim titles available on Steam? Explore the complete list of the best colony sim games.
Lists & Categories
1. RimWorld
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more. RimWorld is a game developed and published by . Released on October 17th 2018 has received 210,517 reviews of which 206,216 were positive and 4,301 were negative resulting in an impressive rating of 9.7 out of 10. The game has hit the top spot as the #1 most played colony sim game, thanks to its 50,750 peak concurrent players over the last day.
9.7
206,216
4,301
50,750
players
2. Oxygen Not Included
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive. Oxygen Not Included is a game developed and published by . Released on July 30th 2019 has received 128,390 reviews of which 124,220 were positive and 4,170 were negative resulting in an impressive rating of 9.5 out of 10. While seeing 5,672 players online at once in the last 24 hours, this game is currently ranked #2 among colony sim games based on player count.
9.5
124,220
4,170
5,672
players
3. Stronghold Crusader: Definitive Edition
Gird your loins and sharpen your steel! Besiege 20 unique enemy lords and battle friends online, in this expanded remaster of the classic 'castle sim'. Relive history with new units, opponents, visuals, audio, campaigns, skirmish trails, co-op and larger maps. Stronghold Crusader: Definitive Edition is a game developed and published by . Released on July 15th 2025 has received 4,044 reviews of which 3,649 were positive and 395 were negative resulting in a rating of 8.7 out of 10. While seeing 4,460 players online at once in the last 24 hours, this game is currently ranked #3 among colony sim games based on player count.
8.7
3,649
395
4,460
players
4. Timberborn
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood. Timberborn is a game developed and published by . Released on September 15th 2021 has received 31,678 reviews of which 30,266 were positive and 1,412 were negative resulting in an impressive rating of 9.4 out of 10. With 2,569 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played colony sim games.
9.4
30,266
1,412
2,569
players
5. WorldBox - God Simulator
WorldBox is the ULTIMATE god simulator and sandbox game. A petri dish for your fantasy civilizations. Create your own world or destroy it using many powers. Watch civilizations grow, form kingdoms, colonize new lands, sail to far continents, wars to ignite, empires to fall and towns to burn! WorldBox - God Simulator is a game developed and published by . Released on December 02nd 2021 has received 44,062 reviews of which 41,874 were positive and 2,188 were negative resulting in an impressive rating of 9.3 out of 10. With 1,993 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played colony sim games.
9.3
41,874
2,188
1,993
players
6. They Are Billions
They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse? They Are Billions is a game developed and published by . Released on June 18th 2019 has received 48,765 reviews of which 41,508 were positive and 7,257 were negative resulting in a rating of 8.4 out of 10. With 1,220 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played colony sim games.
8.4
41,508
7,257
1,220
players
7. Going Medieval
Build and manage your own castle settlement in a land reclaimed by wilderness. With detailed management, survival strategy, and a moddable sandbox world, Going Medieval challenges you to build the mightiest colony this side of the apocalypse. Going Medieval is a game developed and published by . Released on June 01st 2021 has received 18,506 reviews of which 16,633 were positive and 1,873 were negative resulting in a rating of 8.8 out of 10. With 1,002 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played colony sim games.
8.8
16,633
1,873
1,002
players
8. Against the Storm
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors. Against the Storm is a game developed and published by . Released on December 08th 2023 has received 31,412 reviews of which 29,837 were positive and 1,575 were negative resulting in an impressive rating of 9.3 out of 10. With 990 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played colony sim games.
9.3
29,837
1,575
990
players
9. SPORE™
Be the architect of your own universe with Spore, an exciting single-player adventure. From Single Cell to Galactic God, evolve your creature in a universe of your own creations. SPORE™ is a game developed and published by . Released on December 19th 2008 has received 66,120 reviews of which 61,124 were positive and 4,996 were negative resulting in an impressive rating of 9.1 out of 10. With 953 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played colony sim games.
9.1
61,124
4,996
953
players
10. Prison Architect
Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect. Prison Architect is a game developed and published by . Released on October 06th 2015 has received 72,330 reviews of which 64,439 were positive and 7,891 were negative resulting in a rating of 8.8 out of 10. With 836 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played colony sim games.
8.8
64,439
7,891
836
players
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