Online co-op Colony Sim games

Every online co-op Colony Sim game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 31–40 of 57 games matching Colony Sim · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Up to 3 players
Reviews
87% of 4,045

It's ten years since the infection started. Long-established settlements are collapsing, one by one, for unknown reasons. Survivors are running to the hills to escape, hoping for safety in remote places. As another refugee, you're here to carve out a new life for yourself - by any means necessary.

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Free
Released
Price
Free
Players
👥 Not stated
Reviews
81% of 70

A love letter to old-school browser-based RTS MMOs – with charming nostalgic pixel graphics, a dash of political satire, and tonnes of strategic tension. Build your empire, face off against other players, and take what’s yours in true British imperial style: by dominating the map.

If you loved these, you'll love this

Free
Released
Price
Free
Players
👥 Not stated
Reviews
66% of 54

PlanetX is a real-time strategy MMO set on a spherical planet. Players expand territories, construct buildings, and manage resources to develop their empire. The ultimate goal is to conquer the entire planet by claiming all land plots and outpacing rivals in strategic growth and domination.

$$
Released
Price
$$ · Standard
Players
👥 Up to 2 players
Reviews
50% of 141

Space for Sale is an interplanetary, top-down Space Realty management game with a focus on problem-solving and exploration. Played either solo or with a friend, it's up to you to transform wild, uninhabited lands into bustling communities!

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
50% of 28

A shop life simulator and management, From owning a small room above the store to selling exclusive products as the highest rated shop, or scratch lottery tickets to try your luck at winning big, In a 24/7 shop, Manage alone or with friends.

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 Up to 4 players
Reviews
81% of 122

The world has ended. You are deep underground, and all alone with a cheery AI companion. You will have to mine and build to survive, and search for other survivors to help you. Will you be able to reach the surface? And what will you find when you get there?

If you loved these, you'll love this

$$
Released
Price
$$ · Standard
Players
👥 1–4 players
Reviews
78% of 179

Play with friends in a cozy base-building adventure! Take care of adorable creatures — Morps, explore, discover new species, grow crops, fish, build relationships with your crew, decorate your perfect home, and automate production along the way!

If you loved these, you'll love this

$
Released
Price
$ · Cheap
Players
👥 Up to 8 players
Reviews
100% of 9

A homage to classic real-time strategy games. Gather resources, build an empire, and command powerful armies to conquer the world. Lead six unique tribes, expand your territory, and engage in epic battles with hundreds of units on screen. Dominate in 18 missions and procedurally generated maps!

$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
50% of 2

[The Gears: Factory] is a third-person 3D factory-building game where the player's main goal is to build automated systems by mining minerals and producing industrial units.

If you loved these, you'll love this

$$$
Released
Price
$$$ · Expensive
Players
👥 Up to 16 players
Reviews
75% of 5,424

Build your dream railroad across a huge open world! You can build tracks and stations, drive detailed locomotives, and transport goods to earn money and experience. Play exciting Online Multiplayer sessions with your friends or create your very own sandbox!

If you loved these, you'll love this