60+ similar titles based on shared tags and player behavior. Themes include Simulation, Space, Space Sim, Singleplayer.
Watch as stars battle for control of a simple simulated galaxy. Each star belongs to a faction, indicated by its color, and combat happens automatically between neighboring stars. Your role is to observe the dynamic battlefield as stars change ownership.
Asteroid Lanes
Draw trade lanes across a single seamless universe drawn in symbols and lines, and let your ships mine, haul and sell on their own. Chase the materials you lack and the regions you want, push your network outward, and hold the lanes against pirates.
Galactic Simulator 3
Galactic Simulator 3 is a space exploration and evolution sim inspired by the Fermi Paradox and Great Filter theory. Scan uncharted star systems, gather resources and samples, establish outposts and stargates, and witness the rise and fall of civilizations across an ever-evolving galaxy.
Draw trade lanes across a single seamless universe drawn in symbols and lines, and let your ships mine, haul and sell on their own. Chase the materials you lack and the regions you want, push your network outward, and hold the lanes against pirates.
Why similar: Space Sim 24.4%, Idler 20.9%, Sandbox 15.5%, Space 12.2%, Procedural Generation 9.7%
Galactic Simulator 3 is a space exploration and evolution sim inspired by the Fermi Paradox and Great Filter theory. Scan uncharted star systems, gather resources and samples, establish outposts and stargates, and witness the rise and fall of civilizations across an ever-evolving galaxy.
Why similar: Space Sim 27%, Idler 19.8%, Space 11.8%, Sandbox 11.5%, Procedural Generation 11.1%
Mine asteroids, trade minerals and chart an endless, procedurally generated galaxy in a relaxed 2D space sim. Then pin it to your desktop as a live wallpaper: your ship keeps flying, mining and discovering while you work
Why similar: Space Sim 35.2%, Idler 22.3%, Simulation 11.5%, Casual 8%, Space 7.1%
Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective. The game supports multiplayer mode. Create a unique galaxy with friends!
Why similar: Space Sim 28.1%, Idler 21.6%, Sandbox 14.3%, Space 13.3%, Simulation 6.4%
Take the reins of the newly founded Office of Interstellar Production, annex newly discovered star systems, mine resources and refine quality components to build mighty warships to deliver to the unceasing needs of the Navy. A chill sandbox resource management game.
Why similar: Space Sim 35.1%, Idler 25.5%, Simulation 12.5%, Sandbox 9.9%, Space 7%
Gaia Maker is a planet-wide simulation game of terraforming, based on real physics and geology. As the planet's overseer, wield advanced technologies to reshape barren planets into life-filled worlds. Foster animal life, cultivate civilizations, or destroy them. Their fate is in your hands.
Why similar: Space Sim 22.6%, Sandbox 21.1%, Idler 19.5%, Space 10.9%, War 10.3%
Feed a hungry black hole. Haul debris into the void, devour whole biomes, then collapse everything in a Singularity to grow stronger forever. A cosmic idle game about gravity, greed, and infinite prestige.
Why similar: Idler 32.8%, Sandbox 20.8%, Space 16.5%, Procedural Generation 11.9%, Casual 5.9%
Weird Wormholes is a casual game about traveling through wormholes to try and get back home. Use your ship to mine planets for resources and process these resources into components to enable your travels.
Why similar: Space Sim 37.1%, Idler 21.8%, Sandbox 20.9%, Casual 8.3%, Space 6.1%
Gravitation is a sandbox simulation set in the vastness of the cosmos and built on the laws of real-world physics.
Why similar: Space Sim 37.4%, Sandbox 18.1%, Simulation 13.7%, Space 9.9%, Casual 9.6%
Run a galactic pirate syndicate from a single screen. Raid ships, loot cargo, capture crew, and grow a fleet that raids in parallel while you watch. An incremental space-pirate idle game with tactical raids, a reputation-based black market, and a legendary endgame.
Why similar: Auto Battler 25%, Space Sim 24.5%, Idler 22.2%, Space 13.3%, Simulation 4.5%
This game is a battle simulator. You can freely place hundreds of characters and have them fight automatically. There are three types of characters in total, and you can create up to four teams. You can freely set attack mode and defense mode.
Why similar: Auto Battler 37.2%, Idler 28.4%, Simulation 16.3%, War 14.3%, Indie 1.7%
A "small" universe simulation, where you play as a black hole and try to absorb the whole universe. You decide the size and shape of the universe. Could also be used as a less meaningful CPU benchmark.
Why similar: Space Sim 49%, Space 19.5%, Simulation 13%, Sandbox 12.7%, Relaxing 3.3%
An idle clicker where you grow one small planet into a galactic empire. Click Earth, colonize living worlds across star systems, build Dyson Spheres, catch comets and reset reality with the Big Bang. Your civilization keeps producing even while the game is closed.
Why similar: Idler 23.3%, Auto Battler 22.7%, Space 16.5%, Space Sim 16%, Simulation 7.1%
Expand your territory and watch your numbers soar in Idle Polygon, a minimalist incremental game with RPG depth. Upgrade your Geoms, optimize production to astronomical levels, and test your strength in strategic battles. Experience a mesmerizing world where math and growth collide.
Why similar: Idler 32.7%, Auto Battler 31.5%, Simulation 12.1%, Procedural Generation 10.9%, Minimalist 3.7%
Design your own solar systems and enjoy watching them orbit, collide and smash each other in a cosmic dance!
Why similar: Idler 24.5%, Space Sim 22.7%, Sandbox 17.8%, Space 11%, Procedural Generation 9.8%
I am excited to release my first game on Steam! SimpleRockets was released in 2013 for mobile and I've put a ton of work into it to get it ready for PC and Mac. It was inspired by KSP, and it offers a simpler 2D experience for building rockets and exploring space with realistic orbital mechanics.
Why similar: Space Sim 43.5%, Sandbox 25.1%, Simulation 14.9%, Space 12.5%, Indie 3%
Stunning sphere-themed idle/incremental game. Experience simplicity's beauty.
Why similar: Space Sim 27.9%, Auto Battler 25.8%, Idler 21.8%, Space 9.2%, Simulation 7.8%
Simulate the physics of the Universe on a large scale and create stunning visuals. Play with intergalactic interactions, smash planets together and even create the Big Bang itself!
Why similar: Space Sim 33.7%, Sandbox 23.2%, Space 18.5%, Simulation 15%, Casual 6.4%
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 35.9%, Space 21.5%, Simulation 15.8%, Sandbox 14.9%, Strategy 7.1%
Space Travellers is a unique open-world sandbox space simulator set in the year 2343. Travel the galaxy, trade, explore unexplored worlds, fight, build bases and factories, forge alliances and experience new adventures!
Why similar: Space Sim 35.4%, Sandbox 15.2%, Procedural Generation 14.8%, Space 14.8%, Simulation 7.3%
This is an RPG idle fighting game that does not bloat numbers. In the early stage, you only need to use the highest-level characters and equipment without thinking. But in the later stage, you will encounter some setbacks. At this time, you need to study those low-level characters and equipment.
Why similar: Idler 32.9%, Sandbox 22.4%, Procedural Generation 12.6%, Space 9.6%, Casual 6.2%
An idle incremental adventure in space! Mine asteroids while fighting off enemy AI drones. Build your own AI drones, mining lasers, helper drones and more. Collect hundreds of rewards and unlock a variety of features that will help your ultimate goal: making numbers go up (or sometimes down).
Why similar: Idler 26.5%, Space Sim 22.7%, Space 11.5%, Auto Battler 10.1%, Simulation 9%
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 37.8%, Sandbox 22.1%, Simulation 13.8%, Space 13.1%, Strategy 8.4%
Explore a seed-driven galaxy where every ship, planet, and dungeon is generated at runtime. Dogfight pirate wings, land on 20 kinds of worlds, raid surface sites on foot, and build a fleet from salvaged hulls, solo or in Steam co-op. The same seed rebuilds the same galaxy, every time.
Why similar: Space Sim 43.9%, Sandbox 18.1%, Simulation 11.2%, Space 7.9%, Procedural Generation 4.4%
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 36.6%, Sandbox 20.8%, Simulation 13.9%, Space 10.9%, Procedural Generation 9.1%
Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.
Why similar: Space Sim 30.9%, Space 17.5%, Sandbox 16.9%, Procedural Generation 10.7%, Simulation 7.9%
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
Why similar: Space Sim 45.3%, Sandbox 18.1%, Space 18%, Simulation 9.1%, Casual 5.8%
You are neither a general nor a soldier — you are a Stellar Industrialist. To you, peace is nothing but shutdowns and losses. Venture to the frontlines, strip battlefields for wreckage and salvage, turn spoils into resources, and expand your interstellar arms empire.
Why similar: Space Sim 26.3%, War 12.8%, Space 12.5%, Procedural Generation 11.4%, Idler 8.8%
Drifter is an open-world sandbox space trading game with a procedurally-generated galaxy 100,000 light years across made up of tens of thousands of star systems to explore and features an original soundtrack by composer Danny Baranowsky.
Why similar: Space Sim 24.9%, Sandbox 22.7%, Space 22%, Simulation 10.8%, Procedural Generation 10.5%
A dead god drifts in the dark. Build a salvage fleet that carves it apart cell by cell, and watch a colossal carcass melt into a storm of flying debris and climbing numbers. Strip it to the bone then evolve and start again on something bigger.
Why similar: Space Sim 38.5%, Idler 24.5%, Simulation 12.2%, Space 9.3%, Casual 8.4%
A story-driven incremental game with idle and auto-battler mechanics, inspired by Factorio logistics, Path of Exile itemization, and Eve Online's economy
Why similar: Auto Battler 24.1%, Space Sim 20.7%, Idler 16.7%, Space 12.8%, War 9.2%
Dynamic abstract sandbox universe. Changes and evolves as you do.
Why similar: Space 26.4%, Sandbox 22.6%, Space Sim 19.6%, Procedural Generation 8.1%, Simulation 6.5%
Welcome to this exciting gaming world, where you will transform into a true space explorer and embark on a magnificent journey of exploring the wonders of the universe!
Why similar: Space Sim 44.5%, Idler 23.6%, Simulation 10.2%, Casual 9.9%, Space 9.8%
Guess which army will win, and watch them fight for your amusement. Behold Battle is a simple auto battler, where you see heroes and monsters fight to the death in randomly generated battles.
Why similar: Auto Battler 33.1%, Sandbox 18.3%, War 17.1%, Procedural Generation 12.2%, Casual 5%
Build stations above picky planets, match modules to what the locals actually want, and grow a trade empire that earns while you're away. Court the factions or cross them on the road from your first rattling fusion can to a megastructure that tames a black hole.
Why similar: Space Sim 37.3%, Idler 20.1%, Simulation 12.8%, Casual 8.8%, Strategy 7.9%
Build an orbital factory and create a new star. Arrange neighboring machines to boost production, time reactor pulses, and automate your growing foundry. Rebuild for permanent upgrades in a cosmic incremental game.
Why similar: Space Sim 44.1%, Idler 25.5%, Simulation 15.5%, Space 10.5%, Sci-fi 2.7%
Board your ship and push the boundaries of space exploration in this contemplative space incremental. Gather resources, develop your technology, and travel from the Moon to the edge of the solar system to answer a mysterious signal from the stars.
Why similar: Space Sim 32.9%, Idler 28%, Space 16.2%, Simulation 8.6%, Casual 7.7%
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 29%, Space Sim 24.3%, Sandbox 21.5%, Simulation 13%, Strategy 5.9%
Astrox Imperium is a relaxing space game where you fly around a generated universe. Mining, Fighting, Building, Exploring, and Surviving. What makes this game unique? You have complete control of how it plays. A robust sandbox and lots of MOD tools. Make it your game, and play it your own way.
Why similar: Space Sim 36.5%, Space 28.5%, Sandbox 18.6%, Simulation 10.5%, Indie 2.6%
War Tortoise is a new type of hybrid idle game, taking core incremental gameplay and adding new features, idle elements, and advanced graphics. Explore, command and upgrade, equip weapons and armor, level up, unlock abilities, recruit heroes and pilots, and more!
Why similar: Idler 34.9%, Auto Battler 27.8%, War 27%, Strategy 5%, Indie 2.6%
Ready to be an interstellar mining tycoon? In Astrovein, fit the right modules and mine each star system at top efficiency. But a full hold draws pirates: fight beside your captain, or man the turret yourself. No time? Your captains mine on quietly in a corner of your screen.
Why similar: Space Sim 39.2%, Idler 19.6%, Simulation 12.6%, Space 9.9%, Casual 8.7%
This is an incremental game where you become a cozy destroyer of worlds.
Why similar: Space Sim 44.2%, Sandbox 18.6%, Simulation 12.4%, Space 9.5%, Casual 8.3%
Mine the cosmos in this idle space clicker! Collect rare resources, build powerful equipment, upgrade your ship, and unlock new stellar bodies. Rescue crew, automate mines, and uncover the secrets of the stars.
Why similar: Space Sim 33.5%, Idler 29%, Space 17.9%, Simulation 8.9%, Casual 5.9%
The Stars Are Never Still is a 2D space sandbox. Shape a galaxy and watch 16 unique races colonize, trade, ally, betray and wage war. Observe, or intervene with technology, aid, discord, disasters, new life—even black holes. Chronicle millennia of history. No set goals. No empire lasts forever.
Why similar: Idler 20.4%, Sandbox 20.3%, Space Sim 18.1%, Space 12.6%, War 11.9%
X3: Reunion continues the epic space saga, blending deep space trading and intense real-time combat. Explore a vast universe, establish your empire, and shape the new frontier. With enhanced graphics and intricate economies, it's a journey of strategy, simulation, and interstellar intrigue.
Why similar: Space Sim 36.1%, Space 27.2%, Sandbox 17%, Simulation 9.7%, Strategy 5.6%
47 million probes were launched into the void. Yours just found something alive. A living universe simulation where evolution never stops — not even when you do.
Why similar: Space Sim 29.2%, Sandbox 19.5%, Procedural Generation 19.5%, Simulation 13.7%, Space 8.6%
A futuristic sci-fi persistent universe exploration game with one million stars and 18 million planets and moons. Fly your ship to any star and explore its solar system. Claiming stars, planets and moons will make them yours forever - other players will see your discoveries and you will see theirs.
Why similar: Space Sim 49.1%, Simulation 16.8%, Space 11.9%, Procedural Generation 11.1%, Futuristic 5.8%
A planet-building sandbox where you create entire worlds from the ground up. Generate unique planets, shape vast landscapes, and use interconnected simulations inspired by real-world processes to bring your fantasy planet to life.
Why similar: Space Sim 32.8%, Sandbox 21.6%, Procedural Generation 17.7%, Simulation 13.8%, Space 9.9%
We have built a mini universe with real physics basis, simulation and imagination. The game uses realistic environments and models to tell a story of a mini universe.
Why similar: Space Sim 43.7%, Sandbox 19.2%, Space 18.3%, Simulation 7.9%, Casual 4.6%
Perihelion lets you run your own rocket engine shop. Take over an abandoned desert airfield, design realistic, unique engines, then test them!
Why similar: Space Sim 38.8%, Sandbox 27%, Simulation 13.9%, Space 9.6%, Procedural Generation 6.5%
Our goal is to depict the possibilities of space exploration & combat within a realistic environment- to emphasize the "science" in science-fiction. Key features to include: proper orbital mechanics for all objects in space, detailed ship system control, functionality, inter-dependency & damage reaction.
Why similar: Space Sim 64.6%, Simulation 19.3%, Space 16.1%
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 41.7%, Sandbox 20.4%, Space 20.3%, Simulation 15.3%, Sci-fi 2%
A 2D space trading game with a real economy. NPC ships haul cargo between 78 stations and prices move whether you're there or not. Good routes die as other traders catch on, so you keep hunting new ones. No quest markers, no "best trade" arrows. Just you, a map, and the prices.
Why similar: Space Sim 41%, Sandbox 23.1%, Simulation 14.1%, Space 9.1%, Procedural Generation 6.9%
In "Space Mechanics: Repair | Hiring | Craft" you are the owner of a space repair station in which you have to work. Repair spaceships, get money for it, hire them and create items for sale or for your own purposes.
Why similar: Space Sim 46.8%, Space 16.8%, Idler 14.4%, Simulation 10.8%, Futuristic 7.8%
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 37.1%, Space 25.8%, Sandbox 13.8%, Simulation 10.1%, Strategy 5.8%
Squirrel Idle Tycoon is a cozy, addictive idle game where you grow a squirrel-powered ice and water business into a thriving empire. Gather resources, hire hardworking squirrels, unlock powerful upgrades, and earn passive income even while you’re offline.
Why similar: Auto Battler 33.8%, Idler 32.3%, Sandbox 18.5%, Strategy 7.3%, Casual 6%
Spaceship Idle is an idle/incremental 4X grand strategy auto battler where you build your own spaceship and engage in space battles. Research a vast tech tree, equip unique weapons, unlock powerful upgrades, construct bigger and better ships, win epic (auto) battles, and conquer the galaxy!
Why similar: Auto Battler 26.9%, Space Sim 24.8%, Idler 23%, Space 13.4%, Simulation 4.6%
Caught in the middle of a violent conflict on the fringe of the galaxy — your ability to survive will depend on your piloting skills and combat savvy as a mercenary space fighter. But, as you explore the vastly detailed world of Tachyon: The Fringe, you will often find that the most powerful weapon on your ship is in your head.
Why similar: Space Sim 56.7%, Space 22%, Simulation 21.3%
Can you deliver the goods? Board your spaceship and go!
Why similar: Space Sim 41.7%, Sandbox 24.2%, Simulation 16.3%, Casual 10.9%, Sci-fi 3%
Trade your wares and eliminate the competition in a cutthroat world. Buy new ships and stations to mine and haul resources. Explore the vast emptiness of space.
Why similar: Space Sim 53.9%, Space 23.7%, Simulation 11.5%, Strategy 6.2%, Indie 3.1%
