An entire Moon to clean. One toothbrush to start. Team up with up to 16 players, collect and sell lunar dust, upgrade your tools, and unlock cleaning vehicles. Turn a ridiculous job into a thriving operation, if your friends actually help.
77%77% positive of 2,918 reviews36.7KPlaying now: 36,736$7.64
Co-op hookah shop sim for 1 to 4 friends. Run Ghalyan's Hookah Lounge on a space station: pack the bowl, light the coals, serve the aliens and act normal. Nothing on this station is normal.
92%92% positive of 124 reviews177Playing now: 177$6.39
Command your ship and fleet in a galaxy that truly lives: 150 sectors where six factions mine, haul, trade, build and wage war whether you're there or not. Trade it, rob it, defend it — or forge your own fleet and carve out your place in it. Play solo or in online co-op.
88%88% positive of 150 reviews90Playing now: 90$14.99
Astro Colony throws you into an endless Universe of exploration, automation and survival! Build interconnected colonies, alone or with friends, and turn planets into thriving industrial hubs! Design conveyor systems and take care of your Astronauts as you expand your intergalactic empire!
80%80% positive of 2,436 reviews189Playing now: 189$19.99
From commanding the battle standing on the bridge of your flagship all the way down to tactical infantry firefights - AFF brings together all the combat you ever loved in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full Bot support included!
80%80% positive of 3,893 reviews20Playing now: 20$17.99
Take the helm as a new Station Commander and exploit an alien star system in this stunning space-station factory automation game. Amass resources and construct starships using increasingly advanced manufacturing and expand your station in a hostile universe.
83%83% positive of 855 reviews50Playing now: 50$18.99
Procelio is a multiplayer vehicle builder/shooter set amidst a proxy war on the red planet. Build and refine your custom machines from orbit, then pilot them in a distant war against CPU and enemy players.
Play as a variety of creatures or characters and try to survive either maintaining or attacking a space station while everything that can go wrong has already gone wrong.
80%80% positive of 142 reviews49Playing now: 49Free
The Universe is yours. SpaceCraft is an online space exploration and building game. Explore a vast galaxy of solar systems and planets, mine and craft resources, design and build ships, automate planetary bases and interplanetary logistics, trade and cooperate.
62%62% positive of 2,713 reviews317Playing now: 317$29.99
Rebuild civilization from a single planet in Nexus Legacy, a persistent sci-fi 4X MMO. Colonize worlds, manage resources, research technologies, command fleets, forge alliances, and fight for control of a living galaxy.
65%65% positive of 381 reviews97Playing now: 97Free
Survive and colonize Mars alone or in online co-op. Build and upgrade your base, craft equipment, mine resources, produce water, oxygen and food, explore an open world, and repair complex machinery in a technical survival sandbox.
67%67% positive of 2,736 reviews87Playing now: 87$29.99
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.
90%90% positive of 890 reviews8Playing now: 8$14.99
Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction.
91%91% positive of 2,904 reviews19Playing now: 19Free
Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.
68%68% positive of 747 reviews1Playing now: 1$4.79
QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance. Tear through the fabric of space to face the Voss, awaken the ancient civilisation, and dare to challenge the Sanglines, born from the bowels of a world that condemned you.
70%70% positive of 567 reviews1Playing now: 1$19.99
A fiercely formidable sci-fi survival game, set on a hostile alien world that wants you dead! Alone, or with a crew, do you have what it takes to survive?
70%70% positive of 1,013 reviews14Playing now: 14$19.99
Wrangle the hands and arms of a 1970s space cosmonaut and push, pull and twist your way through an increasingly precarious range of physically simulated stellar scenarios, where without gravity, nothing is still, nothing is secure, and nothing is simple.
95%95% positive of 3,786 reviews17Playing now: 17$19.99
The co-op open-world space sim where everyone has a role! Pilot the ship. Reroute power. Launch nukes. Explore alien planets. Research new talents. Work together to find the Lost Colony! ...or just deliver some biscuits
89%89% positive of 4,413 reviews24Playing now: 24$19.99
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.
94%94% positive of 4,572 reviews198Playing now: 198$24.99
Over 1000 unique components allow you to build and command voxel vehicles from the deep ocean to outer space! Forge strategies, allegiances and fleets strong enough to destroy eight deadly factions of the planet and reign supreme. A genre-defying mashup of simulation, building, RTS and RPG.
89%89% positive of 11,094 reviews385Playing now: 385$7.49
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
75%75% positive of 4,116 reviews64Playing now: 64$7.49
Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!
78%78% positive of 29,243 reviews566Playing now: 566$19.99
A procedural co-op space sandbox where players can build their own space ships out of dynamically scalable blocks. Fight epic space battles, explore, mine, trade, wage wars and build your own empire to save your galaxy from being torn apart by an unknown enemy.
89%89% positive of 13,057 reviews415Playing now: 415$24.99