Games like Ostranauts on Steam
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Wayward Terran Frontier: Zero Falls
2d space combat like no other. From the perspective of a single crew member, explore the fully destructible interior of any ship in a massive living world. Engage in space combat with no hitpoints where you know your enemy is dead when you see them fall out of their ship into the cold dark of space.
Occupy Mars: The Game
Survive and colonize Mars in a highly technical, open-world sandbox game. Build and upgrade your base, discover new regions, conduct mining operations, retrieve water, generate oxygen, grow crops, and fix broken parts.
Soulash 2
Soulash 2 is a sandbox RPG roguelike with a procedurally generated open world, simulated history, skill-based progression system, customizable abilities, material-based crafting, building, trading, and the possibility of total mayhem. Will you save your world or destroy it?
Vanguard Galaxy
A relaxing game about space exploration that can be played full screen or at the bottom of your screen. Trade, fight, mine and salvage your way through a procedurally generated galaxy. Let the game idle while your autopilot handles business and builds your fortune.
Junkyard Simulator
Did you ever wish to work in a junkyard? Now you can, with Junkyard Simulator. They are many roads leading to success - whichever you take depends on your decisions.
Saleblazers
Fight. Sell. Survive. Live off the land, build your perfect shop, and defend against nightly horrors in this open world survival shop simulator for 1-8 players.
Devil Spire Falls
The open-world action-RPG, where you can do anything, of your dreams… as if it came out 30 years ago!
The End of History
A historical sandbox simulation where every NPC lives their own life. They don't wait for you—they ally, marry, betray, and die. Kingdoms rise and fall by someone's will. Sometimes you shape history, sometimes it sweeps you away—an observer of a once-in-a-lifetime story that only you can witness.
House of Legacy
Step into the shoes of a fallen clan leader, starting with nothing but a crumbling estate and a handful of hopes, rising through careful planning, trade, and diplomacy to become one of the most powerful families in the land. Now it’s time to forge a legendary dynasty that leaves its mark on history.
VoidExpanse
Explore the vast reaches of VoidExpanse -- mine asteroids, upgrade your ship, trade, complete missions, advance your character and survive fast-paced combat with hostile aliens and mercenaries in the rich and exciting Sci-Fi universe of VoidExpanse!
Reentry - A Space Flight Simulator
Do you have what it takes to become an astronaut? Reentry is a realistic space flight simulator inspired by the early NASA space programs, from orbiting Earth in Mercury and Gemini, to the moon landing in project Apollo. Learn the procedures. Operate the spacecraft. Complete the mission.