
Space Engineers
Design spacecraft and stations from raw blocks, then watch real physics decide whether your engineering holds up.
Still thinking about Space Engineers 2 and its replayable and chaotic tone? These games offer a similar pull for your backlog. Most of them work well for a shared session.
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.
Replayable, Chaotic
A space sandbox survival adventure: start in a crashed pod on an alien planet, mine, craft and build your way up to capital ships, planetary bases and space stations, then warp off to explore a whole galaxy. Play alone or with friends, and expect things to go gloriously wrong along the way.
Also in Survival crafting · Replayable, Chaotic
A voxel sandbox in space where every ship, station and turret is built block by block, then flown into battle. Mine asteroids, run factories, trade, and network the galaxy with warp gates. The universe is procedurally generated and nearly endless, and it bends to your settings. Best with friends on a server.
Replayable
Take control of a fully destructible spaceship and explore, blast or trade your way through the cosmos, alone or with friends. Every tile matters, as you dogfight, maneuver or speed your way past friendly traders, hostile aliens, and impressive space navies. What will you do, Captain?
Replayable, Chaotic
Archean is a first-person engineering sandbox where physics does the judging. You gather ore, craft parts, bolt together planes and rockets, wire their power and fluids, then program them in XenonCode. Planets are full-sized, orbits are real, and if it flies, it is because you built something that flies.
Also in Survival crafting · Replayable, Chaotic
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.
Chaotic
Bolt together a spaceship from thousands of parts, wire up its systems, then fly it in first person to 15 strange planets. Solo or with up to four friends, every mission asks something new of your ship, and every mistake becomes a story. Build it, launch it, and find out what happens.
Replayable, Chaotic
Design a starship from the reactor up, then fly it through a procedurally generated galaxy as a pirate hunter, miner, spacebus driver or whatever else takes your fancy. A 2D construction and simulation sandbox from Introversion where the ship you build decides everything.
Replayable
Astro Colony is a relaxed automation game in an endless procedurally generated universe. Build conveyor networks, move and dock your stations, recruit astronauts and research new tech, alone or with friends. No timers, no punishing failure: just you, a growing colony and a galaxy of voxel planets to strip for parts.
Replayable
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.
Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.
Replayable, Chaotic
Design starships piece by piece, staff them with crews of individually simulated people, and send them into physics-driven battles where every module can be blown off the hull. Explore a procedurally generated galaxy alone or with friends, test your designs in online PvP, or build without limits in Creative Mode.
Replayable

Design spacecraft and stations from raw blocks, then watch real physics decide whether your engineering holds up.

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

Mine, craft and build your way from a bare survival start to bases, starships and a whole galaxy to explore, alone or with friends.

A voxel universe where you mine, craft and command your own fleet, alone or with friends on a server.

Take control of a fully destructible spaceship and explore, blast or trade your way through the cosmos, alone or with friends.

Archean is a first-person engineering sandbox where physics does the judging.

Assemble a ship from thousands of parts, wire its systems together, and take it to fifteen strange planets, alone or with friends.

Design a working starship from the reactor up, then take it into a fresh galaxy each run as a miner, pirate hunter or anything else you fancy.

Set up conveyor networks, dock your stations and research new tech at your own pace, alone or with friends.

Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and…

Design every deck and turret of a starship, crew it with simulated people, and take it into battles where damage tears your work apart piece by piece.

QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance.

Assemble a ship from thousands of parts, wire its systems together, and take it to fifteen strange planets, alone or with friends.

Run a space company at your own pace, moving cargo across the solar system one careful calculation at a time.

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

Design your own warship piece by piece, then take it into fast bullet-hell battles across a galaxy of supervillains.

A sci-fi exploration & survival game where you take on the role of a spaceship’s AI.

Set up conveyor networks, dock your stations and research new tech at your own pace, alone or with friends.

Put your engineering and problem solving skills to the test in this sandbox physics building game!

Archean is a first-person engineering sandbox where physics does the judging.

Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts.

Design a working starship from the reactor up, then take it into a fresh galaxy each run as a miner, pirate hunter or anything else you fancy.

Build a spaceship tile by tile, keep its air breathable and its crew fed, then jump it toward a new home.

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

Design your own warship piece by piece, then take it into fast bullet-hell battles across a galaxy of supervillains.

Build a lunar colony Earth depends on. Mine regolith, run conveyor-and-drone factories above and below the surface, keep your colonists fed and…

Scavenge wrecks, build contraptions from junk and duct tape, and crack jokes while a war rages around you.

Assemble a ship from thousands of parts, wire its systems together, and take it to fifteen strange planets, alone or with friends.

Crash-land on a robot-infested farm planet and tinker your way through it, alone or with friends.

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

Set up conveyor networks, dock your stations and research new tech at your own pace, alone or with friends.

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

Build a spaceship tile by tile, keep its air breathable and its crew fed, then jump it toward a new home.

Build your spaceship, manage your crew, and explore the cosmos whilst trying to keep your crew alive and your ship fully functioning.

Run a space company at your own pace, moving cargo across the solar system one careful calculation at a time.

Design a working starship from the reactor up, then take it into a fresh galaxy each run as a miner, pirate hunter or anything else you fancy.