
Sector Space
Explore a procedurally generated galaxy, mine asteroids, refine minerals, colonize planets, build stations, deploy drones, salvage rare items…
Loved how competitive and mysterious Subspace Discovery can get? These games are worth a look next. Sharing the fun is easy with these picks.
An idle space MMORPG where progress runs while you are away, but the galaxy is built together. Chart a procedural universe of nearly 50 million star systems, craft gear, and join a Squadron to raise stations and claim territory. Play at your own pace; the frontier keeps growing either way.
Also in Co-op · Competitive
SpaceCraft is an online galaxy where you mine planets, build your own ships from parts, automate bases and trade with other players. Fly out, scan a system, land, dig something up and turn it into a business. A calm, open-ended space sandbox that rewards patience and works best with friends.
Also in Co-op
Command a fleet of up to six ships in a shared galaxy: hunt aliens, trade, loot treasure and build corporations with friends while a never-ending intergalactic war rolls on. Simple to pick up, deep once you're in, and playable on desktop or phone on one cross-platform server.
Also in Co-op · Competitive, Colorful
Ascent is a PVE sandbox space MMO with 270 BILLION star systems and an emphasis on strong Sci Fi. It encourages Exploration, Colonization, Research, Asteroid mining, Farming, Trading, and Combat. Outside the tutorial sector, everything in-game has been built by players.
Competitive
New Eden holds over 7,000 star systems shaped by its players, and you get to make your mark in it. Fight in huge fleet battles, trade, mine, build, run missions or scan wormholes for lost tech, in more than 350 ships you can fit out your way. Free to start, hard to master, easy to get lost in.
Also in Co-op · Competitive
Tidal Nexus Online is a submarine themed old school open world MMO. Fight with monsters, trade and collect valuables in the depths to upgrade your sub. Join clans, participate in world events, make friends and enemies along the way.
Competitive, Colorful
A space sandbox MMO where you pilot your own ship, trade between bases, run colonies and robot freighters, and build an empire that keeps working while you sleep. Team up with hundreds of players on one shared server, and fight your way to the Emperor's Throne.
Competitive, Colorful
Build any ship you can imagine out of blocks, then fly it through a galaxy that gets more dangerous toward its center. Mine, trade, fight pirates or start wars, alone or with friends. Ships break apart exactly where you shoot them, which never stops being satisfying.
Also in Co-op
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with mod support and PvP/co-op multiplayer. You're going to need a bigger ship.
Also in Co-op · Mysterious
Starbase is a hybrid voxel/vertex-based space MMO with a fully destructible and infinitely expanding universe, with a focus on building and designing spaceships and stations, exploration, resource gathering, crafting, trading, and combat.
Crash-land on a planet, mine and craft your way back to orbit, then build the starship of your dreams and take it into a dangerous galaxy. The building system lets you stretch, shape and wire anything from fighters to capital ships, and the whole thing is yours to fly.
Also in Co-op · Competitive
Manage your ship and stations, become stronger and synergize ship subsystems to become powerful. Struggle on first levels with one mob of the same tech level for a good minute? Destroy legions of high-tier ships in seconds while tanking all in the late game!
Also in Co-op · Competitive

Explore a procedurally generated galaxy, mine asteroids, refine minerals, colonize planets, build stations, deploy drones, salvage rare items…

A free-to-play co-op sci-fi looter shooter where every mission changes the universe for everyone.

Build a mining ship piece by piece, haul in asteroids and manage the heat your greed creates before something out there notices.

Mine asteroids, scan lost wreckage and build your own bases in a calm, open galaxy that lets you explore at your own pace.

The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist.

Fly up to six ships through a shared universe of trading, treasure hunting and open war with other players.

Take a role on a co-op spaceship, from pilot to gunner, and survive fast, chaotic runs through hostile space together.

Fly, repair and fight from a living spaceship, with room for three friends or an AI crewmate at your side.

Explore procedurally generated planets, craft gear and ships, and fight the Red Darkness alone or with friends.

Rebuild civilization from one planet in a persistent online 4X.

Mine planets, assemble ships from parts and grow a trading empire with friends in an open galaxy.

Crash-land, craft your way back to space, then shape and wire any ship you can imagine and take it out among the stars.

Run one small ship through a simulated economy of mining, trade and war, then build stations and grow a fleet with friends in co-op.

Mine planets, assemble ships from parts and grow a trading empire with friends in an open galaxy.

Rebuild civilization from one planet in a persistent online 4X.

Build a mining ship piece by piece, haul in asteroids and manage the heat your greed creates before something out there notices.

A free-to-play co-op sci-fi looter shooter where every mission changes the universe for everyone.

Explore a procedurally generated galaxy, mine asteroids, refine minerals, colonize planets, build stations, deploy drones, salvage rare items…

Fly, fight, mine and trade your way across a procedurally generated galaxy, then run the faction that rules it.

Mine, trade and fight across a procedurally generated dwarf galaxy, at your own pace or with the ECHO autopilot at the helm.

Fly, repair and fight from a living spaceship, with room for three friends or an AI crewmate at your side.

Fly, fight and sabotage your way across a shifting stretch of space, then escape with the loot before anyone else does.

Explore procedurally generated planets, craft gear and ships, and fight the Red Darkness alone or with friends.

Mine asteroids, scan lost wreckage and build your own bases in a calm, open galaxy that lets you explore at your own pace.