
Astrobuilder
An AI-driven space management RPG in a living galaxy. Explore 150+ planets and interact with 600+ NPCs whose lives and relationships evolve over time.
Loved how replayable and competitive Foundation: Galactic Frontier can get? You might settle into these games easily.
Fight, explore the stars, trade, and lead your fleet across the galaxySpace Commander: War and Trade is an ultimate single player space-sim featuring spectacular graphics, intuitive combat and deep mechanics.
Replayable
Captain a starship through a galaxy in turmoil. Play pirate, merchant, bounty hunter or spy across 33 jobs, build your ship from 45 hulls and 350 upgrades, and watch your crew grow cruel or clever from your choices. A deep, turn-based space RPG where every run tells a different story.
Replayable
You start with one ship and a whole galaxy that does not wait for you. Trade, fight, explore and build your way up to fleets, stations and production chains, in a simulated universe where factions keep trading and fighting with or without you.
Replayable
Command your own ship in a living galaxy. Trade in a galaxy-wide economy, explore, fight and build. Pick one of six factions, hire pilots, fly many different ships and land on planets to explore on foot. Fast arcade flight meets deep space sandbox. Beyond the gate, the frontier is yours.
Replayable
Fly a gunship, end up ruling a star system. Starpoint Gemini Warlords puts you in the captain's chair of your own warship while you build fleets, conquer territory and grow an empire across Gemini. Lead the charge yourself or let your armada do the work, then do it all differently next time.
Replayable
A real-time multiplayer space trading game in a shared persistent galaxy. Haul cargo across a living player-driven galaxy, mine asteroids, colonize and industrialize planets, become a pirate (or a hunt them), or out-trade every other captain - solo or with your friends. PvP & PvE.
Replayable, Competitive
The universe is in full swing and the war is on the verge. At this time, should we set up our own space station and develop our own fleet to defend ourselves? Can also buy and sell warships to make money, why not? This game is a simulation business game based on second-hand ship trading.
Trade, fight, and explore a procedurally generated galaxy in this deep space trading game inspired by 80's sci-fi computer screens and early text based space games. Command fleets, negotiate with alien factions, colonize planets, and forge your legacy across five unique career paths.
Replayable
Rebel Galaxy puts you at the helm of a hulking star destroyer at the edge of the known universe. Trade, mine, hunt pirates and settle scores with broadsides instead of dogfights, all wrapped in a blues-rock soundtrack and a colorful space western atmosphere. It's a space sim that skips the spreadsheets and gets straight to the fun.
Replayable
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 · Replayable
The hit mobile game Interstellar Pilot 2 has come to Steam. Join the TEF forces heading to the Gatopean sector to find a new home for mankind. Play how you like in this open world space-sim developed by Pixelfactor.
Replayable
Leave everything behind and try your hand at captaining a ship on the fringes of the universe. Customize your ship, explore vast star systems, invest in corporations, and embark on expeditions discovering fame and fortune within Lightspeed Frontier!
Replayable

An AI-driven space management RPG in a living galaxy. Explore 150+ planets and interact with 600+ NPCs whose lives and relationships evolve over time.

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

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.

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

An indie space-sim and strategy game featuring ship and fleet combat mixed with RTS elements.

The hit mobile game Interstellar Pilot 2 has come to Steam. Join the TEF forces heading to the Gatopean sector to find a new home for mankind.

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

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.

Assume command of a battle fleet and deploy immediately to the Dust Zone, commander.

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

Trade, produce and outmaneuver rival companies in a shared sci-fi economy that keeps running while you're away.

Start with nothing... End with everything! All you have is a basic ship, barely fit for combat, with it you'll start your journey and empire.

Trade, fight, and explore a procedurally generated galaxy in this deep space trading game inspired by 80's sci-fi computer screens and early text…

Ferry cargo between stations, buy more haulers, and let the numbers climb at their own calm pace.

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.

A real-time multiplayer space trading game in a shared persistent galaxy.

An AI-driven space management RPG in a living galaxy. Explore 150+ planets and interact with 600+ NPCs whose lives and relationships evolve over time.

Build a massive multi-deck starship and lead colonists across the galaxy. Gather resources in space or land on alien worlds for supplies.

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.

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

An indie space-sim and strategy game featuring ship and fleet combat mixed with RTS elements.

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