Online co-op Space Sim games

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

Showing 51–60 of 81 games matching Space Sim · updated 12 Oct 2026

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$ · Cheap
Players
👥 Not stated
Reviews
100% of 5

In "Space Mechanics: Repair | Hiring | Craft" you are the owner of a space repair station in which you have to work. Repair spaceships, get money for it, hire them and create items for sale or for your own purposes.

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Released
Price
$$ · Standard
Players
👥 2–4 players
Reviews
100% of 11

In this action-packed co-op adventure, 2-4 players must unite to crew a spaceship through a web of interconnected story missions. Choose your role—Captain, Pilot, Gunner, or Engineer—and make decisions that shape not only your journey, but the future of a galaxy on the brink of war.

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Released
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$ · Cheap
Players
👥 Up to 5 players
Reviews
87% of 88

Configure the weaponry on your ship to blast away enemies as you navigate through swarms of bullets and space battles. Each ship has unique customization options and playstyles.

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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
20% of 5

Let’s Build Wonders:Galaxy is a multiplayer cooperative space-building game. In the game, members within each alliance achieve efficient resource sharing and division of labor through trade transportation means. They work to expand their alliance's galactic territory to resist pirate harassment.

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$$ · Standard
Players
👥 Not stated
Reviews
93% of 47

Operate the Starship space launch system and learn how to catch a rocket to understand what it takes to colonize Mars in this ever-evolving simulation of SpaceX Starbase Texas.

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Released
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$ · Cheap
Players
👥 Not stated
Reviews
76% of 46

Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective. The game supports multiplayer mode. Create a unique galaxy with friends!

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Released
Price
$$ · Standard
Players
👥 1–6 players
Reviews
86% of 6,590

Void Crew is a Chaotic, Co-op Roguelite game for 1 to 6 players: Outfit your spaceship and crew for thrilling quests, brave fierce enemies in Space Battles... and try not to panic!

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$
Released
Price
$ · Cheap
Players
👥 2–11 players
Reviews
70% of 20

Cosmos simulates a spaceship bridge of up to six players, guarding your deep space stations against the menacing Kraliens and Torgoth. Immerse yourself in a modern space game with enhanced graphics and endless customization possibilities, guaranteeing countless hours of exhilarating fun.