60+ similar titles based on shared tags and player behavior. Themes include Space, Space Sim, Simulation, Sci-fi.
Sci-Fi Builder is a sandbox construction sim where you design a space station, build a colony, and control aliens, robots & NPCs. No grids, no limits — just creative freedom in space.
Red Planet Rampart
You are deployed to the desolate red planet to reforge humanity's hope. With no hospitable atmosphere, no nurturing water sources, only relentless storms, unknown alien creatures, you must use wit and determination to survive on this alien land and build a Mars base of your own.
Planet Miner
Remove fog, look for and mine minerals, construct buildings, upgrade the rover and reach the portal.
You are deployed to the desolate red planet to reforge humanity's hope. With no hospitable atmosphere, no nurturing water sources, only relentless storms, unknown alien creatures, you must use wit and determination to survive on this alien land and build a Mars base of your own.
Why similar: Mars 26.7% ★, Space Sim 20%, Colony Sim 11.7%, Building 8.4%, Space 8.3%
Remove fog, look for and mine minerals, construct buildings, upgrade the rover and reach the portal.
Why similar: Space Sim 34.1%, Colony Sim 19.1%, Simulation 11.3%, Action-Adventure 9.5%, Adventure 7.8%
Opportunity is an atmospheric narrative game where you become the famous NASA rover and brave the many obstacles littering the desolate red planet in order to finally complete its mission.
Why similar: Space Sim 34.9%, Mars 26.1% ★, Simulation 11.9%, Adventure 8.1%, Space 6.4%
Explore space and build on other worlds in Star Rangers! Star Rangers is a space exploration and construction game that allows players to build habitats and spacecraft, acquire gear and explore the solar system.
Why similar: Mars 29% ★, Space Sim 19.3%, Building 10.1%, Space 9.2%, Sandbox 8.6%
CosmoOdyssey: Trip to Mars is a first-person spaceship adventure with a special Ukrainian flavor.
Why similar: Space Sim 34%, Mars 24.4% ★, Colony Sim 18.9%, Space 8.6%, 3D 6.8%
Lead an expedition into an unexplored solar system. Build rockets, aircraft, and other vehicles, discover new worlds, gather resources, complete missions, unlock technology, and grow a colony of tiny purple Klorps in this spaceflight sandbox.
Why similar: Space Sim 37.4%, Space 14.3%, Simulation 13.8%, Sandbox 10.3%, Building 8.9%
The game "Terraspace" offers you a unique experience of planet settlement and terraforming — creating conditions for life on unsuitable planets. This will require you to build the necessary structures to populate the planet.
Why similar: Space Sim 29.7%, Mars 19.6% ★, Colony Sim 17.8%, Sandbox 8.5%, Space 6.7%
A game about an alien that has to abduct things to pay rent!
Why similar: Space Sim 34.7%, Aliens 19.9%, Simulation 12.7%, Sci-fi 9.1%, Space 8.7%
Take the position of a CEO of a space transport company and become a new major player in the industry. Space Company Simulator is a realistic management sim game that will challenge your planning skills as you strive to launch the first manned mission to Mars.
Why similar: Mars 27.6% ★, Space Sim 25.7%, Building 11.3%, Space 10.8%, Simulation 9.2%
Elusive Verge is a third-person space exploration game with dash of base-building, combat and survival.
Why similar: Space Sim 28.7%, Colony Sim 19.9%, Sandbox 8.8%, Building 8.7%, Simulation 6.9%
The year is 2033. You, an ex-Marine with little opportunities left, have signed up with Utopia Arura, a large mining corporation on Mars. They have sent you to a location they have proposed but you have chosen for mining. Everything else is up to you.
Why similar: Mars 31.1% ★, Space Sim 22.5%, Colony Sim 15.1%, Space 9.8%, Sci-fi 7.4%
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.
Why similar: Space Sim 23.3%, Space 21.9%, Simulation 12.6%, Sandbox 11.7%, Sci-fi 9.1%
Experience the ultimate turn-based colony building game in Citizens: On Mars! As the leader of a fledgling Martian settlement, your mission is to develop a thriving colony amidst the harsh and unforgiving environment of the Red Planet.
Why similar: Mars 27.2% ★, Space Sim 21.7%, Colony Sim 18.6%, Space 9.2%, Building 8.8%
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.
Why similar: Space Sim 37.4%, Simulation 13.7%, Sandbox 12.4%, Space 10.2%, Action 8.5%
ROVA is a cozy space-rover photography game. Help a new space colony conduct research on large spherical planets, by documenting elements of alien worlds through photography. ROVA is a game about discovery and exploration.
Why similar: Space Sim 30.4%, Colony Sim 22.3%, Space 11.4%, Sandbox 10%, Third Person 9.1%
Take On Mars places you right in the middle of mankind’s most exciting undertaking. Start out in the seat of a rover operator, finish as the first human to have ever set foot on the Red Planet.
Why similar: Mars 39.5% ★, Space Sim 21%, Space 14.1%, Simulation 9.9%, Building 8.1%
Build and manage space outposts on the Moon and Mars in this realistic simulation game. From the first step on the Moon to Mars colonization, launch rockets, take care of your astronauts and expand your base as you explore the cosmos. No grind, just pure management and exploration fun.
Why similar: Mars 28.5% ★, Space Sim 23%, Colony Sim 17.2%, Space 10.4%, Building 6.4%
Funorbit is a space survival simulation with realistic physics, resource gathering, crafting, and building. Navigate a vast universe using orbital mechanics, encounter drifting meteoroids, and construct space stations to survive.
Why similar: Space Sim 29.6%, Mars 26.9% ★, Interactive Fiction 10.2%, Sandbox 9%, Simulation 7%
Will you make the grade and save the planet? Become a cadet on your first day of training in this 3rd person space combat simulator.
Why similar: Space Sim 37.5%, Simulation 24.1%, Space 14.7%, Third Person 12.2%, Sci-fi 11.5%
PlanetDrop - A Tiny Space Adventure is a computer game where you command a spaceship in an orbit of a planet. Your primary task is to capture "drop zones" with your shuttles and commandos. You rely on stealth, agility and speed, rather than on firepower.
Why similar: Space Sim 35%, Simulation 12.1%, Action-Adventure 10.8%, Aliens 9.8%, Action 8%
Master the heavy physics of your offroad hauler and upgrade it to conquer the treacherous Martian landscape. Transport vital resources to evolve your central outpost from a humble shelter into a thriving planetary hub. The frontier is hostile, it’s your job to tame it.
Why similar: Space Sim 31.7%, Colony Sim 22.5%, Simulation 12.4%, Adventure 8.5%, Third Person 7.4%
Only 1000 days left until the end of the world. You have to realize the largest space program ever to save as many people as you can. Explore planets, colonize them, help people find a new home.
Why similar: Space Sim 33.9%, Mars 20.9% ★, Space 16.1%, Aliens 10.3%, Simulation 7.6%
Lead a spaceyard: juggle contracts, design, prototype, and build all types of ships—from single-seat fighters to giant cruisers. Create custom vessels to meet precise client specs, then take the helm yourself to prove their worth.
Why similar: Space Sim 35.5%, Space 14.6%, Building 11.7%, Simulation 10.7%, Sandbox 8.4%
After a mysterious accident you are left are stranded, floating through space on a piece of a space station. Craft supplies and Hubs to expand what is now your home. But be warned space is a dangerous places where one mistake can mean certain death. Can you defy the odds and survive in space?
Why similar: Space Sim 35.5%, Sandbox 10.8%, Building 10.3%, Third Person 10%, Simulation 8.5%
Launch from a familiar world into a 1:1 scale solar system of beautiful, unforgiving planets. Colonise, mine, and explore real places that people may walk upon within your lifetime. Project Longshot hands you a space program and asks only one question. How far can your program go?
Why similar: Space Sim 27.3%, Colony Sim 15.4%, Space 10.2%, Building 9.1%, Sandbox 8.1%
You are the eyes and ears of mission control for the ambitious exploration of Mars. Built under the advisement of real astronauts, engineers & planetary scientists, you will choose your mission, design your hab, and manage your crew. Monitor feeds, issue orders, and react when things go sideways.
Why similar: Mars 32.6% ★, Colony Sim 21.5%, Space Sim 19.9%, Space 10.9%, Simulation 6.1%
In the midst of a seemingly hopeless war among the stars, take control of highly customizable spacefighters to experience classic space combat action throughout a story-driven campaign.
Why similar: Space Sim 52.1%, Space 16.4%, Sci-fi 13.1%, Simulation 8.7%, Action 5.9%
What if there was a train, in space? Embark as a simple passenger or take a longer-term role as a member of staff in an asymmetric gaming experience like no other.
Why similar: Space Sim 35.9%, Colony Sim 22.8%, Aliens 13.1%, Space 9.7%, Simulation 7.9%
Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.
Why similar: Space Sim 22.5%, Building 16.7%, Space 16.3%, Sandbox 11.2%, Simulation 10.4%
Mars Bot Battle is a simulation of American and China robots sent to Mars to prepare for future human colonists. It is based on the technologies proposed for a Mars base.
Why similar: Mars 45% ★, Space Sim 29.2%, Simulation 10%, Space 9.6%, Third Person 3.9%
Landinar: Into the Void is a top-down space-adventure-RPG. You are recruited as a rookie bounty hunter in the oppressive Landinar Empire. On your journey through the quadrant you will meet diverse characters, build your own spaceship and choose your battles.
Why similar: Space Sim 34.2%, Space 16.6%, Building 13.1%, Sandbox 7.2%, Sci-fi 6.9%
In celebration of the 25 yr anniversary of the first release, this compendium contains all 4 games in the Battlecruiser 3000AD series which was first released in 1996.
Why similar: Space Sim 36.6%, Space 11.2%, Sci-fi 10.6%, Aliens 10.3%, Sandbox 8.9%
Ensure the moon is safe for humanity’s lunar settlement! Explore the moon as a Lunar Rover and interact with crashed ships, natural resources, and the nearby landmarks to determine if humans can live here!
Why similar: Space Sim 38.2%, Colony Sim 16.3%, Sandbox 9.2%, Simulation 8.1%, Building 8%
Tower defense meets city building in a grimdark sci-fi world. Build vertically, manage resources, defend against alien hordes, and command machine priests in humanity's last stronghold.
Why similar: Space Sim 31.1%, Colony Sim 21.6%, Mars 16.7% ★, Aliens 9.5%, Simulation 9.1%
The Battle of Sol is an intense space action game where you participate in epic capital ship battles, thrilling dogfights, space station raids, and much more as you liberate humanity's solar system from enemies determined to bring us to its fiery end.
Why similar: Space Sim 36.7%, Simulation 19.7%, Space 17.4%, Sci-fi 11.3%, Action 10.5%
After a galactic portal failure you find yourself lost millions of light years away from home, in a foreign galaxy... With your main propulsion systems disabled you are unable to traverse space, so you try to collect resources you find near you in order to create a galactic portal to return back.
Why similar: Space Sim 38.8%, Simulation 14.7%, Action-Adventure 12.6%, Adventure 10.1%, Space 9.5%
Pilot your ship across a procedurally generated star map as corruption spreads inward. Each sector holds a stabiliser; protect it from raiders and pump energy into its shields. Jump between nodes, prioritise threats, and manage energy. Hold the line until time runs out, or be consumed by corruption.
Why similar: Space Sim 47.1%, Space 19.4%, Third Person 11.8%, Sci-fi 8.2%, Simulation 6.2%
A rocket simulation game inspired by SpaceX's rocket recovery technology: Precisely control rocket engines, plan launches, complete missions, secure government funding, deliver supplies to Mars, and ultimately achieve Mars terraforming and human colonization.
Why similar: Mars 34.5% ★, Space Sim 22.8%, Colony Sim 13.8%, Space 10.8%, Sandbox 10%
Dive into a hardcore space station simulation and overcome the unforgiving environment of space. You must build and manage your station under the pressures of life, economics, and thermodynamics. Rise to power through economic leverage or ruthless military might.
Why similar: Space Sim 37.4%, Colony Sim 21.5%, Sandbox 12.5%, Simulation 10.8%, Building 7.9%
Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.
Why similar: Space Sim 35.8%, Space 19.6%, Simulation 9.8%, Sci-fi 9.4%, Sandbox 7.5%
Mars Training Camp is a simulation to build the human first base on Mars based on NASA and SpaceX science and plans. You must find ice and build critical facilities of green houses, O2 & H gas plant, launch pads and a habitat, and react just in time to emergencies of fire and low oxygen supply.
Why similar: Mars 38.7% ★, Space Sim 35.5%, Simulation 13.1%, Space 6.3%, Adventure 3.3%
We want you to experience the dreadful emptiness of space and the tension of the obscurity of aliens.
Why similar: Mars 29.5% ★, Action-Adventure 11.4%, Aliens 9.9%, Third Person 9.2%, Space 8.3%
Explore a precisely recreated lunar surface built from real data and a JAXA-backed simulation.
Why similar: Space Sim 49.2%, Simulation 16.3%, Space 14.6%, Third Person 14%, Adventure 4.2%
After the supernova explosion, the Thermian race was destroyed. All knowledge, technologies and data about the past were lost. You must to restore civilization and explore the territories of your home system in search of lost technologies and artifacts.
Why similar: Space Sim 28.4%, Colony Sim 18.1%, Aliens 12.2%, Action-Adventure 8.4%, Space 7.8%
Orbit Engineer – Build, grow, and survive in your own space station. Manage crew morale, supplies, and research while facing unpredictable space events and system failures. Every decision matters as you expand and fight to keep your station alive in space.
Why similar: Space Sim 31.1%, Colony Sim 21.9%, Mars 17.9% ★, Simulation 12.7%, Third Person 7%
Kinetic Void is a 3D space adventure with a focus on customization and enjoyable space simulation. The shipyard allows players to construct their ship piece by piece. Ships can be as simplistic as a cockpit, a hull, a engine and a gun, or as complex as a player wants.
Why similar: Space 27.4%, Space Sim 16.2%, Simulation 13.2%, Sandbox 12.2%, Sci-fi 11.7%
Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.
Why similar: Mars 31.7% ★, Space Sim 23.2%, Space 9.6%, Building 8.8%, Sci-fi 7.5%
The galaxy’s deadliest villains have escaped. Track them, fight them, and lock them back up.
Why similar: Space Sim 28.5%, Simulation 13%, Action-Adventure 10.9%, Aliens 10.4%, Sandbox 9.1%
Out of cash, out of luck, out on the fringe. Juno Markev has a killer to tail, a debt to pay, and more trouble headed her way. Rebel Galaxy Outlaw takes place in a greasy, blue-collar world of outlaws, truckers, cops and thieves.
Why similar: Space Sim 41.5%, Sci-fi 11.4%, Action-Adventure 11.3%, Space 7.7%, Third Person 7.5%
Manage your parcel, build, collect and expend. Research to unlock new possibility. Explore to increase profitability. Dive under the surface to discover secrets. Is this planet hiding treasures or threats?
Why similar: Mars 40.4% ★, Colony Sim 17.6%, Space Sim 9.5%, Building 7.4%, Sandbox 6.7%
This is an unusual adventure future simulation space game, in different gravity under your operation will also change. Players can feel the vastness of different planets in the game, feel different gravity, feel their own different operations. Conquer the universe!
Why similar: Space Sim 39.2%, Action-Adventure 12.1%, Sandbox 11.4%, Third Person 10%, Space 9.5%
Against the overwhelming might of the Empire stands a small but growing Rebel Alliance. Scattered resistance groups are uniting and what is needed most now are Starfighter pilots. Will you join their struggle to end this tyranny and become a hero of the Rebellion?
Why similar: Space Sim 54.1%, Space 17.1%, Simulation 11.1%, Action 11%, Sci-fi 4.1%
Red Frontier is a game about exploring the red planet and collecting trash and scrap metal.
Why similar: Space Sim 29%, Colony Sim 23.4%, Simulation 11.9%, Sandbox 10%, Adventure 8.1%
X-Tension is the eagerly awaited expansion pack to X: Beyond the Frontier. The expansion is not limited by a linear plot line but makes use of new ways to expand your empire. You can now take part in missions that are offered to you throughout the game.
Why similar: Space Sim 38.4%, Space 18.1%, Simulation 17%, Sci-fi 12.6%, Sandbox 9%
In Galactic Vanguard, embark on an epic adventure across a galaxy filled with mystery and conflict. As a brave space explorer, your choices will shape the fate of planets and civilizations. Discover uncharted worlds, engage in strategic battles, and forge your path in this handcrafted universe.
Why similar: Space Sim 32.3%, Space 13.8%, Sci-fi 11.6%, Action-Adventure 10.1%, Building 8.9%
Space Sim Tycoon – A sandbox transportation tycoon game where you can explore forbidden planets, gather resources, craft goods, and establish routes to manage your space empire.
Why similar: Space Sim 38.5%, Simulation 14.7%, Sandbox 12.3%, Building 11%, Space 9%
Mars Base Alley is a cozy city-builder about creating the perfect little corner of humanity on the red planet—one alley at a time.
Why similar: Mars 34.3% ★, Colony Sim 15%, Aliens 11.9%, Space 9.5%, Sci-fi 8.3%
Space simulation moon game. Explore the moon, mars, venus and mercury in breathtaking real-time 3D. Explore their geological aspects. Battle against spaceships or a secret lunar base. Enter the ISS. Measure the moon. And get in the cockpit.
Why similar: Space Sim 35.9%, Mars 30.9% ★, Space 12%, Sci-fi 9.5%, Simulation 7%
