Co-op games like Main Sequence

Chasing that relaxing and replayable feeling you got from Main Sequence? You might settle into these co-op games easily. Most of them work well for a shared session.

Outworld Station
Grab three co-op friends and run a space station like a factory with guns. You mine asteroids, chain machines into supply lines, link planets with wormholes, and build civilian and military starships while something out there pushes back. Shared to-do lists keep everyone busy.
Relaxing, Replayable
83% of 866 Steam reviews are positivePlayers online now: 31$18.99
Final Factory
Final Factory blends factory building, spaceship design, and a rich universe to explore. Build a mega factory and command a massive fleet against the hostile local aliens. Discover new technologies and unlock the secrets of an ancient civilization as you explore an infinite cosmos.
Replayable
78% of 289 Steam reviews are positivePlayers online now: 8$18.99
Astro Colony
Astro Colony is a voxel-space factory game about turning scattered planets into one linked industrial colony, alone or with friends. You move stations, dock them together, run conveyors and pipes, keep astronauts fed and housed, and research your way toward home. Relaxed and open-ended, it suits co-op friends who want to build side by side.
Relaxing, Replayable
80% of 2,447 Steam reviews are positivePlayers online now: 106$19.99
SpaceCraft
SpaceCraft hands you a whole galaxy to run with co-op friends: scan planets, mine what you find, build ships part by part, then set up automated bases and trade routes between worlds. Join a Corporation, split the jobs, and watch your small crew turn into a very serious space business.
63% of 2,738 Steam reviews are positivePlayers online now: 232$29.99
FOUNDRY
FOUNDRY is a first-person factory builder on a procedurally generated voxel planet, where you and co-op friends mine resources, lay belts and pipes, and scale up to robot production for interstellar trade. Good for co-op friends who like building something large together, one conveyor problem at a time.
Relaxing, Replayable
82% of 3,332 Steam reviews are positivePlayers online now: 212$29.99
Evospace
Evospace is a first-person factory builder with no enemies, only engineering problems. You and your co-op friends dig and terraform a blocky planet, string together machines, fluids, heat and power, and climb toward a portal linking another world. Slow, fiddly, and satisfying when the line finally runs.
Relaxing, Replayable
83% of 353 Steam reviews are positivePlayers online now: 13$14.99
Avorion
Avorion is a procedural co-op space sandbox about building blocky ships and pushing toward the galaxy core with co-op friends. You mine, trade, fight pirates and factions, and grow from a lone starter ship to a fleet and stations. Two of you can even fly one ship, one steering while the other fires.
Replayable
89% of 13,096 Steam reviews are positivePlayers online now: 549$12.49
Satisfactory
Land on an alien planet for FICSIT, then build the factory of your dreams with co-op friends: stack multi-story halls, lace them with conveyor belts, send trucks and trains off to far outposts, and hop in a jetpack when something jams. Easy to share, hard to stop tweaking.
Relaxing, Replayable
97% of 237,502 Steam reviews are positivePlayers online now: 11,393$39.99
Approximately Up
Build a spaceship out of thousands of parts, climb aboard in first person, and launch it with up to three co-op friends. Approximately Up pairs sandbox shipbuilding with a 200-hour mission story across 15 planets, where every backward thruster and missing cable is your crew's problem to solve.
Relaxing, Replayable
93% of 1,174 Steam reviews are positivePlayers online now: 266$18.74
Stationeers
Stationeers gives you and your co-op friends a space station to build and keep alive together. You mine ore, raise walls and pipes, balance air, heat and power, and split jobs until the base runs itself. Hard, systems-heavy fun for co-op friends who like solving problems as a crew.
Relaxing, Replayable
88% of 8,675 Steam reviews are positivePlayers online now: 464$34.99
StarMade
StarMade is a voxel space sandbox where you and co-op friends build ships, stations and factories block by block, then fly them into fleet battles, pirate fights and galaxy-wide trade. Bring patience for the learning curve and you get a universe that is genuinely yours to shape together.
Replayable
66% of 2,200 Steam reviews are positivePlayers online now: 5$14.99
Interstellar Rift
Build a starship deck by deck, then fly it with co-op friends as crew or rivals. You mine, trade, take missions, and fight aliens and pirates together, with everyone manning the same hull. Made for shared ships and split jobs.
Replayable
66% of 1,414 Steam reviews are positivePlayers online now: 5$19.99

Hidden gems like Main Sequence

Approximately Up

Build a spaceship out of thousands of parts, climb aboard in first person, and launch it with up to three co-op friends.

$18.74

Ore Factory Squad ⛏️

Grab shovels with up to three co-op friends and turn a bare warehouse into a humming ore business.

$12.99

Alchemy Factory

Start with a tiny medieval shop, then team up with co-op friends to belt, pipe, and magically fling resources into potions, jewelry, and relics.

$17.99

Starlathe

Team up with up to three co-op friends in a living 2D galaxy of 150 sectors, where six factions keep mining, hauling and fighting.

$11.99

Outworld Station

Grab three co-op friends and run a space station like a factory with guns.

$18.99

I Fetch Rocks

Embark on your asteroid hauling career with Veritago Fortana.

$15.99

Eden Crafters

Pick a hostile planet with co-op friends and turn it into somewhere humans can live.

$19.99

Astro Colony

Astro Colony is a voxel-space factory game about turning scattered planets into one linked industrial colony, alone or with friends.

$19.99

Desynced

Desynced is a sci-fi automation strategy game where drones do the hauling instead of belts.

$29.99

AutoForge

AutoForge is a 2D automation sandbox where you play Otto, a magical golem building a Mana-powered factory in a large, dangerous world.

$24.99

Orebound

Orebound is a dwarven factory game in first person where you mine, craft, and automate your way through a voxel open world.

$24.99

FOUNDRY

FOUNDRY is a first-person factory builder on a procedurally generated voxel planet, where you and co-op friends mine resources, lay belts and pipes…

$29.99

Newest co-op games like Main Sequence

Factory Survival

Build automated factories with your friends in a voxel world you can dig through.

$19.99

Starlathe

Team up with up to three co-op friends in a living 2D galaxy of 150 sectors, where six factions keep mining, hauling and fighting.

$11.99

Alchemy Factory

Start with a tiny medieval shop, then team up with co-op friends to belt, pipe, and magically fling resources into potions, jewelry, and relics.

$17.99

Approximately Up

Build a spaceship out of thousands of parts, climb aboard in first person, and launch it with up to three co-op friends.

$18.74

Ore Factory Squad ⛏️

Grab shovels with up to three co-op friends and turn a bare warehouse into a humming ore business.

$12.99

SpaceCraft

SpaceCraft hands you a whole galaxy to run with co-op friends: scan planets, mine what you find, build ships part by part, then set up automated…

$29.99

Astro Colony

Astro Colony is a voxel-space factory game about turning scattered planets into one linked industrial colony, alone or with friends.

$19.99

Belts of Iron

Explore, automate, and fight in this new open world factory automation game. Build factories connected by miles of conveyor belts.

$14.99

Eden Crafters

Pick a hostile planet with co-op friends and turn it into somewhere humans can live.

$19.99

Outworld Station

Grab three co-op friends and run a space station like a factory with guns.

$18.99

Desynced

Desynced is a sci-fi automation strategy game where drones do the hauling instead of belts.

$29.99

StarRupture

StarRupture is a first-person open-world base builder on a hostile planet that burns and regrows under repeated cataclysms.

$19.99