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.
POKET LEGION
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.
Gaia Maker
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.
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 37.7%, Idler 29.7%, Simulation 15.7%, War 13.3%, Indie 1.6%
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% ★, Idler 21.1%, Sandbox 20.8%, Space 10.6%, Simulation 10.3%
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 33.9% ★, Idler 27.4%, Simulation 12.5%, Sandbox 9.7%, Space 6.7%
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 36.1% ★, Idler 23.5%, Sandbox 20.6%, Casual 8.2%, Space 5.9%
A small quick game about building a factory to launch planets into a solar system! Grow your base and increase production to make the ultimate factory for launching planets!
Why similar: Space Sim 32.7% ★, Sandbox 18.9%, Simulation 12.8%, Space 9.2%, Casual 8.7%
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 37.1% ★, Sandbox 18.2%, Simulation 14%, Space 9.7%, Casual 9.6%
Stunning sphere-themed idle/incremental game. Experience simplicity's beauty.
Why similar: Space Sim 26.6% ★, Auto Battler 26.6%, Idler 23.2%, Space 8.7%, Simulation 7.7%
My Little Cosmos is a light idle clicker game that runs quietly in the background. Keyboard input and mouse clicks from everyday computer use automatically drive the evolution of a universe, with inventory rewards dropping over time.
Why similar: Space Sim 28.2% ★, Idler 24.1%, Sandbox 11.8%, Space 11%, Simulation 10.1%
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 35%, Sandbox 21.7%, Procedural Generation 12.4%, Space 9.1%, Casual 5.9%
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 31.4% ★, Idler 24.8%, Space 13.7%, Sandbox 11.7%, Simulation 7.8%
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 28.3%, Space Sim 21.8% ★, Space 11%, Auto Battler 10.5%, Simulation 8.9%
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 48.7% ★, Space 19.2%, Simulation 13.3%, Sandbox 12.8%, Relaxing 3.3%
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 35.2% ★, Sandbox 15.2%, Procedural Generation 15.1%, Space 14.6%, Simulation 7.4%
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 44% ★, Sandbox 24.9%, Simulation 15.5%, Space 11.4%, Indie 3.1%
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 33.4% ★, Sandbox 23.3%, Space 18.3%, Simulation 15.3%, Casual 6.4%
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.
Why similar: Idler 23.2%, Space Sim 19.9% ★, Sandbox 15.9%, Space 13.6%, Procedural Generation 11.6%
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 30.8% ★, Sandbox 17.4%, Space 16.7%, Procedural Generation 10.4%, Simulation 7.7%
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 35.6% ★, Space 21.2%, Simulation 16.2%, Sandbox 15%, Strategy 7.2%
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 36.6%, Auto Battler 28.2%, War 25.2%, Strategy 4.8%, Indie 2.5%
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 37.5% ★, Sandbox 22.1%, Simulation 14.1%, Space 12.9%, Strategy 8.5%
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 36.2% ★, Sandbox 20.8%, Simulation 14.2%, Space 10.8%, Procedural Generation 9.2%
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 43.2% ★, Idler 25.5%, Simulation 10.2%, Casual 9.6%, Space 9.5%
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 34.3%, Sandbox 17.9%, War 16.5%, Procedural Generation 12.1%, Casual 4.9%
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 25%, Space Sim 19.9% ★, Idler 17.9%, Space 12.2%, War 8.7%
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 24.7% ★, Sandbox 22.8%, Space 21.7%, Simulation 11.1%, Procedural Generation 10.6%
Real-time planetary collision sandbox powered by SPH physics: smash planets together and watch the destruction and its aftermath!
Why similar: Space Sim 45% ★, Sandbox 18.2%, Space 17.8%, Simulation 9.3%, 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 25.9% ★, War 12.4%, Procedural Generation 11.6%, Space 11.5%, Idler 10.7%
Dynamic abstract sandbox universe. Changes and evolves as you do.
Why similar: Space 26.1%, Sandbox 22.9%, Space Sim 19.3% ★, Procedural Generation 8.1%, Simulation 6.6%
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 34.2%, Idler 33.6%, Sandbox 17.6%, Strategy 7%, Casual 5.7%
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 36.8% ★, Space 27.8%, Sandbox 19%, Simulation 10.4%, Indie 2.7%
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 28.3%, Space Sim 24.2% ★, Sandbox 21.7%, Simulation 13.4%, Strategy 6%
Beautiful pixel art space roguelite autobattler where your ship fights for you. Upgrade your ship, collect loot, stack wild synergies, and become ridiculously overpowered.
Why similar: Auto Battler 32.1%, Space Sim 23.9% ★, Procedural Generation 15.3%, Space 13.1%, Simulation 4%
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 32.4% ★, Idler 31.2%, Space 17.2%, Simulation 8.8%, Casual 5.8%
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 27.7%, Idler 24.4%, Space Sim 23.7% ★, Space 12.7%, Simulation 4.6%
Idle Space War is an idle space simulation game where you upgrade your spaceship, explore distant planets, and collect resources. Progress continues even when you’re offline. Customize your ship, develop strategies for unique planets, and enjoy a relaxing yet engaging interstellar adventure.
Why similar: Space Sim 28.4% ★, Auto Battler 26.1%, Idler 20.2%, Space 8.7%, Simulation 7.3%
Start with one machine. Scale to a galaxy-supplying coffee empire. Hire 33 alien workers, survive Rush Hour chaos every 8 minutes, and boss-fight your way to prestige resets that unlock permanent upgrades. Free to play. No paywalls.
Why similar: Idler 32.4%, Space Sim 26.7% ★, Auto Battler 16.1%, Casual 6.9%, Futuristic 6.4%
Start with a single soldier, end up with a massive army. Strategize and command your units, or let them grind on their own. Progress through many unique progression systems and conquer all the stages.
Why similar: Auto Battler 33.2%, Idler 26.4%, Sandbox 13.2%, War 9.2%, Strategy 9.2%
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 43.5% ★, Sandbox 19.4%, Space 18.1%, Simulation 8.1%, Casual 4.6%
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 17.3%, Space 11.8%, Procedural Generation 10.8%, Futuristic 5.7%
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% ★, Space 26.8%, Sandbox 17.2%, Simulation 10%, Strategy 5.8%
Dive into sci-fi alien worlds where you wipe out Alien scourge by deconstructing them into parts to upgrade your base and your DECON unit, allowing you to produce higher outputs, more damage, more gains, and JUST MORE. DECON PROTOCOL is an incremental game with idle and clicker mechanics.
Why similar: Auto Battler 36.1%, Idler 30%, Simulation 14.4%, Casual 9.8%, Sci-fi 3.7%
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 64.3% ★, Simulation 19.8%, Space 15.9%
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% ★, Space 16.5%, Idler 15.7%, Simulation 10.9%, Futuristic 7.5%
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 56.4% ★, Simulation 21.8%, Space 21.8%
Can you deliver the goods? Board your spaceship and go!
Why similar: Space Sim 41.3% ★, Sandbox 24.2%, Simulation 16.7%, Casual 10.9%, Sci-fi 2.9%
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 36.6% ★, Space 25.4%, Sandbox 14%, Simulation 10.6%, Strategy 5.9%
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.
Why similar: Idler 43.2%, Space 17.5%, Auto Battler 13.7%, Simulation 10.3%, Casual 7.1%
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 54.6% ★, Space 23.9%, Simulation 11.6%, Strategy 6.7%, Indie 3.2%
Space Colonizers is a simulation and strategy idle game of Sci-Fi adventure theme. To explore more planets and meet cute aliens, you have to constantly install parts and upgrade spacecraft.
Why similar: Space Sim 36.5% ★, Idler 20.7%, Space 10.6%, Simulation 8.4%, Strategy 5.6%
Deep Claims is a space exploration game where you upgrade your ship and equipment in order to mine increasingly valuable and hazardous asteroids. Can you make it to the core?
Why similar: Space Sim 31% ★, Sandbox 23.2%, Space 16.8%, Procedural Generation 11.8%, Simulation 9.5%
Complex idle clicker game with infinite possibilities. Prestige, evolving, limits breaking, perks, bosses, income options, ranking and many more features are available!
Why similar: Idler 33%, Auto Battler 25.5%, Sandbox 18.8%, Simulation 7.6%, Strategy 4.7%
Exiled to a deep space mining sector, you are left with a crappy ship, a laser, and a small mining beam. It is up to you to survive by working your way through the galaxy. Mine asteroids, refine and trade the ore, buy upgrades for your ship, hunt pirates... you get it.
Why similar: Space Sim 29.2% ★, Space 24.1%, Sandbox 19.5%, Simulation 11.8%, Procedural Generation 11%
In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.
Why similar: Space 33.1%, Space Sim 29% ★, Simulation 16.5%, Sandbox 14.7%, Sci-fi 5.1%
Asteroid Mining Empire is a sci-fi mining progression game where you harvest asteroid fields, earn credits, unlock upgrades, expand your ship and drone systems, and push toward powerful long-term rebirth progression as your small operation grows into a space industry.
Why similar: Space Sim 53.2% ★, Idler 17.7%, Space 12.9%, Casual 11.9%, 2D 1.9%
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!
Why similar: Space 31.5%, Space Sim 29.8% ★, Sandbox 19%, Simulation 11%, Strategy 4.5%
You find yourself in a distant galaxy full of merchants, diplomats, bandits and powerful factions. Explore unknown galaxies, trade, fight pirates or become one. Uncover mysteries and shape the universe!
Why similar: Space Sim 51.7% ★, Sandbox 26.5%, Space 8.1%, Simulation 6.8%, Futuristic 4.2%
Start as a microscopic speck, become the end of everything. Void Core is a minimalist sci-fi idle game where you control a black hole. Harvest matter, bend spacetime to automate your growth, and consume entire galaxies. Consume. Grow. Evolve.
Why similar: Idler 34.9%, Space Sim 26.2% ★, Space 17.3%, Simulation 7.7%, Casual 5%
SPACE SEX SHOP is an 18+ store simulator where you have to open the first adult store in space 🚀✨. Manage your inventory, study demand among different alien races 👽🤖, develop your station, and step by step turn a small trading module into a galactic empire 👑.
Why similar: Space Sim 45.2% ★, Sandbox 22.5%, Simulation 15.9%, Space 13.3%, Relaxing 2.6%
A retro style space sim where you mine, trade, bounty hunt, pillage, and explore. In this game you choose you own path as you navigate the galaxy while balancing faction alligence and legality of your actions.
Why similar: Space Sim 36.2% ★, Sandbox 20.7%, War 14.1%, Space 12.3%, Futuristic 6%
A casual space simulation game where you perform orbital manoeuvres on satellites to change their orbit and complete missions.
Why similar: Space Sim 48.2% ★, Simulation 19.3%, Space 18%, Futuristic 4.9%, Casual 3.8%
