Outpost Zero
Outpost Zero blends the genres of Multiplayer Base Building Survival and Simulation games in a Sci-Fi universe.
51% of 580 Steam reviews are positive$3.99
Co-op games like Spacebase Startopia
Looking for that same funny and retro spark as Spacebase Startopia? You might settle into these co-op games easily. Many of them are fun to share with friends.
Outpost Zero
Outpost Zero blends the genres of Multiplayer Base Building Survival and Simulation games in a Sci-Fi universe. On a lawless alien world, robotic scouts are tasked with building an Outpost for human colonists. Command AI minions, colonize the planet, and survive the perils of Gaiya.
51% of 580 Steam reviews are positive$3.99Astro 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.
Replayable
80% of 2,447 Steam reviews are positivePlayers online now: 106$19.99Space for Sale
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!
Also in Tycoon · Funny, Colorful
49% of 143 Steam reviews are positive$19.99SpaceCraft
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 2,742 Steam reviews are positivePlayers online now: 232$29.99Interstellar Transport Company
Build a galactic transportation empire and supply humanity with everything it needs to colonize the stars. In this sci-fi logistics simulator, grow your company from a local transport agency into an interstellar logistics behemoth! Singleplayer, vs AI, and online multiplayer.
Also in Tycoon · Replayable
65% of 397 Steam reviews are positive$24.99Outworld 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.
Also in City builder · Replayable
83% of 866 Steam reviews are positivePlayers online now: 31$18.99Starbound
Starbound strands you in space with a broken ship and a whole procedurally generated universe to fix it with. Beam down with co-op friends, repair, explore, build towns, farm, capture monsters, and chase the story campaign together, all in easy drop-in co-op.
Funny, Retro, Colorful
92% of 120,671 Steam reviews are positivePlayers online now: 868$14.99Executive Assault 2
Executive Assault 2 mixes base-building strategy with first-person shooting in space. One of you runs the company as CEO while co-op friends join as Executrons to fight on foot, drive tanks and mechs, fly fighters, and board starships. A strong pick for co-op friends who want shared battles with one brain on the map and the rest in the action.
Replayable
82% of 1,609 Steam reviews are positivePlayers online now: 6$24.99Spacelines from the Far Out
Run your own 60s-inspired space-age alien airlines in this randomly-generated chaotic 1-to-4-player local and online co-op game!
Also in Tycoon · Funny, Retro, Colorful
75% of 463 Steam reviews are positive$14.99Roadside Research
Roadside Research puts you and up to three co-op friends in charge of a gas station, except you are aliens in paper masks studying humans for an invasion. Days are restocking, refueling and checkout, nights are alien upgrades, with government agents ready to turn you to goo if you get sloppy.
Also in Tycoon · Funny, Replayable
85% of 4,129 Steam reviews are positivePlayers online now: 97$14.99The Colonists
Cute robots, slow-growing towns, and a friend to build with. Team up for the co-op campaign or face off in PvP, laying roads, boat routes, and trains while your colony farms, researches, and climbs through three ages.
Also in City builder · Retro, Colorful, Replayable
85% of 1,056 Steam reviews are positivePlayers online now: 31$24.99My Colony
A sci-fi colony sim that starts with one lander and a rover and ends wherever your ambition does. Pick a faction, grow an outpost into an empire, trade on a player-run market, or share a region with friends. It runs on almost anything and never asks you to wait for a timer.
Also in City builder · Replayable
88% of 277 Steam reviews are positivePlayers online now: 10$4.99
Cheaper than Spacebase Startopia
Astro Colony
Astro Colony is a voxel-space factory game about turning scattered planets into one linked industrial colony, alone or with friends.
80% of 2,447 Steam reviews are positivePlayers online now: 106$19.99
Space for Sale
Space for Sale is an interplanetary, top-down Space Realty management game with a focus on problem-solving and exploration.
49% of 143 Steam reviews are positive$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…
63% of 2,742 Steam reviews are positivePlayers online now: 232$29.99
Interstellar Transport Company
Build a galactic transportation empire and supply humanity with everything it needs to colonize the stars.
65% of 397 Steam reviews are positive$24.99
Outworld Station
Grab three co-op friends and run a space station like a factory with guns.
83% of 866 Steam reviews are positivePlayers online now: 31$18.99
Starbound
Starbound strands you in space with a broken ship and a whole procedurally generated universe to fix it with.
92% of 120,671 Steam reviews are positivePlayers online now: 868$14.99
Executive Assault 2
Executive Assault 2 mixes base-building strategy with first-person shooting in space.
82% of 1,609 Steam reviews are positivePlayers online now: 6$24.99
Spacelines from the Far Out
Run your own 60s-inspired space-age alien airlines in this randomly-generated chaotic 1-to-4-player local and online co-op game!
75% of 463 Steam reviews are positive$14.99
Roadside Research
Roadside Research puts you and up to three co-op friends in charge of a gas station, except you are aliens in paper masks studying humans for an…
85% of 4,129 Steam reviews are positivePlayers online now: 97$14.99
The Colonists
Cute robots, slow-growing towns, and a friend to build with.
85% of 1,056 Steam reviews are positivePlayers online now: 31$24.99
My Colony
Build a space colony from a single rover, grow it into a sprawling economy, and rule it your way.
88% of 277 Steam reviews are positivePlayers online now: 10$4.99
Hidden gems like Spacebase Startopia
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.
93% of 1,174 Steam reviews are positivePlayers online now: 266$18.74
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.
88% of 165 Steam reviews are positivePlayers online now: 43$11.99
Outworld Station
Grab three co-op friends and run a space station like a factory with guns.
83% of 866 Steam reviews are positivePlayers online now: 31$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.
80% of 2,447 Steam reviews are positivePlayers online now: 106$19.99
Roadside Research
Roadside Research puts you and up to three co-op friends in charge of a gas station, except you are aliens in paper masks studying humans for an…
85% of 4,129 Steam reviews are positivePlayers online now: 97$14.99
Pioneers of Pagonia
Rebuild fog-cleared islands with up to 3 co-op friends in a shared settlement where everyone builds, trades, and manages at once.
81% of 4,861 Steam reviews are positivePlayers online now: 98$20.99
Aground Zero
The world has ended. You are deep underground, and all alone with a cheery AI companion.
80% of 123 Steam reviews are positivePlayers online now: 1$19.99
Executive Assault 2
Executive Assault 2 mixes base-building strategy with first-person shooting in space.
82% of 1,609 Steam reviews are positivePlayers online now: 6$24.99
Final Factory
Final Factory blends factory building, spaceship design, and a rich universe to explore.
78% of 289 Steam reviews are positivePlayers online now: 8$18.99
Vectorio Classic
Vectorio Classic is a simple 2D survival base-builder where you and co-op friends claim resource patches, research better weapons, and hold the line…
93% of 1,474 Steam reviews are positiveFree
StarRupture
StarRupture is a first-person open-world base builder on a hostile planet that burns and regrows under repeated cataclysms.
80% of 12,624 Steam reviews are positivePlayers online now: 977$19.99
Don't get lost
A procedurally-generated, open-world, first-person colony sim.
78% of 479 Steam reviews are positiveFree
Newest co-op games like Spacebase Startopia
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.
88% of 165 Steam reviews are positivePlayers online now: 43$11.99
Rewind 99
You're the last remaining video rental store. From humble VHS clerk to rental racketeer - run your video store and explore Reshoot Springs, building…
66% of 436 Steam reviews are positive$11.99
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.
93% of 1,174 Steam reviews are positivePlayers online now: 266$18.74
ZeroSpace
Team up in the Orion sector in this sci-fi RTS where you command infantry, mechs, artillery, and orbital strikes.
78% of 1,354 Steam reviews are positivePlayers online now: 96$39.99
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…
63% of 2,742 Steam reviews are positivePlayers online now: 232$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.
80% of 2,447 Steam reviews are positivePlayers online now: 106$19.99
Outworld Station
Grab three co-op friends and run a space station like a factory with guns.
83% of 866 Steam reviews are positivePlayers online now: 31$18.99
Roadside Research
Roadside Research puts you and up to three co-op friends in charge of a gas station, except you are aliens in paper masks studying humans for an…
85% of 4,129 Steam reviews are positivePlayers online now: 97$14.99
StarRupture
StarRupture is a first-person open-world base builder on a hostile planet that burns and regrows under repeated cataclysms.
80% of 12,624 Steam reviews are positivePlayers online now: 977$19.99
Pioneers of Pagonia
Rebuild fog-cleared islands with up to 3 co-op friends in a shared settlement where everyone builds, trades, and manages at once.
81% of 4,861 Steam reviews are positivePlayers online now: 98$20.99
Aground Zero
The world has ended. You are deep underground, and all alone with a cheery AI companion.
80% of 123 Steam reviews are positivePlayers online now: 1$19.99
QANGA
QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance.
70% of 568 Steam reviews are positive$19.99