- #1 WormWorld
97% matchNo user reviews
Dev: Kyjmo
Windows
A creative sandbox adventure with a focus on exploration, discovery and survival. Shape your worlds, build, mine, and farm. Expand your reach and travel to other worlds using your ship, and worm holes!
Why similar: Sandbox 14.2%, Building 14.1%, Nature 11.9%, Space 11.1%, Space Sim 10.8%
- #2 LANDLOCK Project Wild
96% matchNo user reviews
Dev: TheDeskCrewPub: Cory Green
Windows
Embark on a hardcore survival journey in LANDLOCK, where creativity meets unforgiving challenges. Explore, build bases, fight enemies, terraform landscapes, craft strategically, and let your imagination run wild in this pioneering adventure! Are you ready for your ultimate test of survival?
Why similar: Choose Your Own Adventure 17.5%, Sandbox 14.4%, Building 13.2%, Nature 11.3%, Base Building 10.5%
- #3 Kerbal Space Program
96% matchOverwhelmingly Positive96% of 142,914 reviews2015
Dev: SquadPub: Private Division
Windows · Mac · Linux
Median: 5.4 hrsMean: 66.1 hrs≥1hr: 84%
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
Why similar: Science 21.2%, Space 20.7%, Sandbox 16.3%, Space Sim 12.8%, Building 11%
- #4 Spaceflight Simulator
95% matchOverwhelmingly Positive97% of 9,319 reviews2022
Dev: Team Curiosity ✦
Windows · Mac
Median: 5.3 hrsMean: 15.3 hrs≥1hr: 84%
In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.
Why similar: Science 19.3%, Sandbox 17.9%, Space Sim 17.1%, Space 16.1%, Exploration 8.2%
- #5 RemoteSpace: First Settlement
94% matchNo user reviews
Dev: ShadowDev
Windows
A sci-fi settlement building game with orbital mechanics. Start from a spaceship, scan asteroids, manage fuel, ore, electricity, time, and sanity, while expanding your settlement, exploring an alien solar system, and building stations and spacecraft to support your growing colony.
Why similar: Science 17.1%, Space Sim 16.1%, Building 14.3%, Space 10.2%, Sandbox 10.2%
- #6 Planet Factory
93% matchPositive86% of 29 reviews2024
Dev: SupremeGuardianGames
Windows
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: Sandbox 16.9%, Space 14.9%, Science 14.9%, Base Building 12.4%, Building 12%
- #7 Space Station Continuum
94% matchNegative15% of 39 reviews2020
Dev: N-Body Solutions
Windows
Space Station Continuum is a building & management sim inspired by the past, present, and future of humans in space.
Why similar: Science 19%, Building 12.6%, Space 12.4%, Sandbox 12.2%, Space Sim 12%
- #8 Biosphere Simulator
92% matchNo user reviews2026
Dev: DoranM
Windows
Biosphere Simulator is a planetary god game sandbox where you guide a dead volcanic world through billions of years of evolution. Seed life, shape ecosystems, unleash cataclysms, and watch civilizations rise from primordial microbes to spacefaring societies.
Why similar: Science 19.5%, Nature 12.9%, Building 11.3%, Sandbox 10.5%, Space 8.8%
- #9 Soyuz Constructors
91% matchNo user reviews
Dev: Pyramid Games S.A.Pub: Pyramid Lab
Windows
Become a pioneer of spaceflight. As an engineer in the Soviet Space Program you will be responsible for repairing, fixing and building the iconic spacecraft and rockets from the R-7 family.
Why similar: Science 20.5%, Building 13.6%, Space 13.5%, Space Sim 13%, Sandbox 12.9%
- #10 Triton Survival
91% matchMostly Positive76% of 41 reviews2025
Dev: Family Devs
Windows
Triton Survival is an open world survival game about exploration, construction, engineering, and fighting on planets. Embark on this interstellar adventure and conquer the galaxy. Are you ready?
Why similar: Building 15.1%, Sandbox 15%, Space 13.8%, Space Sim 12.9%, Crafting 10.2%
- #11 Space Engineers 2
89% matchMostly Positive76% of 4,685 reviews2025
Dev: Keen Software House
Windows
Median: 1.4 hrsMean: 8.1 hrs≥1hr: 60%
Space Engineers 2 is a playable Early Access Alpha sandbox focused on engineering, exploration, and colonization in a fully destructible universe. Design and build ships, stations, and planetary bases while uncovering the story of Miro and Ivan Sokol. Help shape the future of the Almagest system.
Why similar: Science 16.9%, Sandbox 13.6%, Building 13.5%, Space 12.5%, Space Sim 9.2%
- #12 iCode STEM Universe
89% matchNo user reviews
Dev: iCode Technologies
Windows
Dive into a VR universe of knowledge! Explore space, engineer inventions, and journey through Earth's history. Discover, learn, and be amazed.
Why similar: Science 19.7%, Choose Your Own Adventure 16.3%, Sandbox 13.1%, Space 11.8%, Nature 11.5%
- #13 Autocraft
90% matchMixed56% of 297 reviews2017
Dev: Alientrap
Windows · Mac
Median: 54 minMean: 3.2 hrs≥1hr: 44%
Create, Collect, and Crash in Autocraft, a physics destruction sandbox. Create your own cars, rockets, tanks, planes, boats, and more.
Why similar: Sandbox 26.5%, Building 21.8%, Space 16%, Physics 10%, Crafting 8.1%
- #14 Captain Forever Trilogy
88% matchVery Positive89% of 195 reviews2018
Dev: Farbs
Windows
Millions of players worldwide have flown, built, and fought their way through Captain Forever. CF Trilogy brings Captains Forever, Successor, and Impostor to Steam with a beautiful new renderer, new modules, and a reimagined world written by acclaimed novelist Cassandra Khaw.
Why similar: Science 16.9%, Building 13%, Strategy 12.8%, Space 11.4%, Space Sim 10.7%
- #15 Rocket Science
87% matchVery Positive80% of 172 reviews2020
Dev: unbeGames
Windows
Take part in a space program. Design spacecrafts and send them off to explore the vast expanses of space. Experience the real scale of the Solar system and the size of its celestial bodies.
Why similar: Science 21%, Space 14.6%, Sandbox 14.3%, Building 14.3%, Space Sim 12.9%
- #16 Kerbal Space Program 2
86% matchMostly Negative26% of 31,779 reviews2023
Dev: Intercept GamesPub: Private Division
Windows
Median: 7.7 hrsMean: 19.3 hrs≥1hr: 86%
Kerbal Space Program 2 is the sequel to the acclaimed space-flight simulation game Kerbal Space Program. Enter the next generation of space adventure with exciting new parts, stunning visuals, fully revamped UI and Map View, and rich new environments to explore.
Why similar: Science 23.2%, Sandbox 15.2%, Building 15.1%, Space 15%, Space Sim 11.8%
- #17 Everlost
86% matchNo user reviews
Dev: kub3sqtPub: Orivilon
Windows
Stranded in a world that never stops growing. Gather, craft, build and survive in an infinite procedurally generated wilderness where no two worlds are ever the same.
Why similar: Sandbox 22.7%, Building 21.4%, Exploration 14.8%, Crafting 13.8%, Base Building 11.3%
- #18 Solar Expanse - Space Exploration Manager
84% matchVery Positive87% of 1,079 reviews2026
Dev: SpaceOpsPub: Games Operators
Windows
Median: 4.2 hrsMean: 14.4 hrs≥1hr: 75%
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries.
Why similar: Science 23.6%, Space 16.5%, Sandbox 15.2%, Space Sim 13.1%, Building 8.1%
- #19 Spaceflight Simulator 2
85% matchNo user reviews
Dev: Team Curiosity ✦
Windows · Mac
Build rockets and fly them around the Solar System in this realistic aerospace sandbox. Attempt landings, build space stations, drive rovers, perform spacewalks, explore alien worlds, and get your crew home safe.
Why similar: Space Sim 17.8%, Science 16.4%, Sandbox 16.1%, Space 12.2%, Building 11.2%
- #20 Farlight Explorers
84% matchMixed56% of 205 reviews2019
Dev: Farlight Games Industry
Windows
Median: 2.5 hrsMean: 3.5 hrs≥1hr: 72%
Extract and gather resources from different planets. Manage the supply of electricity, water, food and oxygen of your base in order to survive. Automate the creation of new products. Build a spaceship to transport your products to other places...
Why similar: Building 29%, Sandbox 27.6%, Space 18.5%, Strategy 9.7%, Crafting 6.7%
- #21 Space Frontier
83% matchNo user reviews
Dev: Delabs Inc
Windows
Land on a new planet as a space refugee. Craft items, build bases, and battle aliens to survive. Pioneer your future in this online survival RPG.
Why similar: Sandbox 17%, Building 15.7%, Space 15.6%, Crafting 12.8%, Base Building 10.6%
- #22 Lunar Impact
82% matchNo user reviews
Dev: Artem Rumyantsev
Windows
Go to the Moon to explore its harsh nature and mysterious anomalies. Build your own lunar base, craft equipment, extract valuable resources and make many discoveries. Overcome the challenges of extreme lunar conditions, an oxygen-free atmosphere and much more unknown...
Why similar: Science 14.4%, Building 14.3%, Space Sim 11.6%, Sandbox 11.2%, Crafting 10.5%
- #23 Junkyard Space Agency
82% matchNo user reviews2027
Dev: Nullterm
Windows · Mac · Linux
Build ships from scrap and fly them in a gritty space sim. Venture solo or team up. Hunt for parts, haul vital resources, and keep your space agency afloat.
Why similar: Science 17.4%, Space 13.4%, Building 13.4%, Sandbox 12.8%, Space Sim 9%
- #24 MineEngineer
81% matchNo user reviews
Dev: MoonBuninni
Windows · Mac
Mine. Build. Survive. Engineer your way through the cosmos in this 2D space engineering sandbox!
Why similar: Space 21.8%, Sandbox 20.1%, Building 19.2%, Space Sim 9.5%, Base Building 9%
- #25 Untethered
81% matchNo user reviews2027
Dev: True Anomaly Entertainment
Windows · Mac · Linux
Untethered is a space survival-sandbox set in our own cosmic backyard. Explore zero-gravity environments, build and operate realistic space stations, and fight to stay alive in the unforgiving realm of deep space.
Why similar: Sandbox 14.7%, Space 13%, Space Sim 12.5%, Building 11.2%, Science 10.6%
- #26 Rionag: Survey Fleet
80% match1 user reviews0% of 1 reviews2024
Dev: Reul Games
Windows · Linux
Rionag: Survey Fleet is a top-down starship builder and logistics game where it's your job to balance the needs of the crews with cutting-edge equipment on board. Unlock tech that adds new capabilities for your ships to go through hazardous environments, enabling you to explore new worlds.
Why similar: Science 21.9%, Space Sim 16.7%, Building 14.5%, Space 12.4%, Base Building 9%
- #27 Hands On Builder
79% matchNo user reviews
Dev: Good Movement Studios
Windows
Hands On Builder is a cozy first-person building simulation where you gather materials, prepare them yourself, and construct your home piece by piece. Cut logs into panels and studs, plan your worksite, and build at your own pace in a relaxed sandbox world.
Why similar: Building 21.9%, Sandbox 16.1%, Choose Your Own Adventure 15.6%, Crafting 13.7%, Physics 9.1%
- #28 Keplerian Space Discovery
78% matchNo user reviews88% of 24 reviews2026
Dev: Kugelblitz
Windows
Travel through the solar system in your own spaceship! The motion of each celestial body is accurately reproduced by the Kepler equation.
Why similar: Science 25.7%, Space 17.3%, Building 17.2%, Space Sim 14.3%, Crafting 13.1%
- #29 X Space
79% matchNo user reviews2026
Dev: X SPACE
Windows
A sudden, devastating strike has reduced your interstellar voyage to ruins. As the sole survivor in X SPACE, you must rebuild your space base from scratch, assemble a versatile fleet, and pilot your massive mobile fortress into the depths of the universe.
Why similar: Sandbox 14.7%, Space 14.1%, Building 13.7%, Space Sim 12%, Base Building 9.7%
- #30 SkyRig
78% matchNo user reviews
Dev: Rocket Flair StudiosPub: Astra Logical
Windows
Build floating automated rigs in a volatile gas giant. Extract elements, synthesize compounds, and descend through atmospheric layers in this sci-fi systems-builder focused on chemistry, engineering, and survival.
Why similar: Science 23.4%, Space 13.6%, Sandbox 12.9%, Base Building 11.6%, Space Sim 10.5%
- #31 Elon
77% matchNo user reviews
Dev: MonoBehavior Games
Windows
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: Sandbox 17.9%, Space Sim 17.6%, Building 14%, Exploration 9.8%, Space 9.8%
- #32 C-Beams
77% matchNo user reviews
Dev: Distant Light GamesPub: Hooded Horse
Windows
Pilot your ship through a perilous black hole system in this Space Action RPG. Engage in advanced ship combat, haul rare elements, and upgrade your vessel to survive. Stunning visuals, a deep narrative, and a rewarding progression system await as you uncover the abyss's dark secrets.
Why similar: Science 19.3%, Space Sim 14.2%, Space 14.1%, Sandbox 14%, Building 13.1%
- #33 IslaNode Rescue Signal
76% match2 user reviews100% of 2 reviews2025
Dev: Gor Yeritsyan
Windows
IslaNode Rescue Signal it is a unique survival adventure ,set on deserted island where you have nothing but natural resources. Stranded alone, you’ll need to explore, gather materials, and craft with unique node-based crafting system.
Why similar: Sandbox 17.7%, Building 16.3%, Nature 13.9%, Base Building 13%, Crafting 12.8%
- #34 Cosmic Composer
76% matchNo user reviews2026
Dev: Juhani Viitanen
Windows
Casual puzzle game on a cosmic scale. Build stars, planets and other cosmic objects. Evolve your cosmos using abilities of the stars from stellar winds to supernova.
Why similar: Space 23.4%, Sandbox 21.3%, Building 20.7%, Science 17.4%, Space Sim 11.7%
- #35 Reprocessed
75% matchNo user reviews
Dev: Macrostructura
Windows
Factory management and sandbox base building in zero-g environment. Survive, expand and then dominate space industrial market. Build large scale resource processing plant completely from nothing.
Why similar: Sandbox 16%, Building 15.7%, Space 14.2%, Base Building 13.2%, Space Sim 12%
- #36 Halley Mission: 2061
75% matchMixed67% of 17 reviews2024
Dev: PcZ Games
Windows · Mac
Embark on a sci-fi survival adventure on Halley's Comet as a retired astronaut on a top-secret mission. Build, manage limited resources, and survive the desolate space environment to complete your mission.
Why similar: Building 17.5%, Space 14.7%, Space Sim 13%, Survival 10.9%, Sandbox 10.3%
- #37 Evolution Survival
74% matchNo user reviews2027
Dev: DrierWhisper729Pub: DrierWhisper Games
Windows
Evolution Survival is a survival game where the universe evolves around you. The plants and animals you saw at the beginning will be different at the end, They may not even be there, the star may have gone supernova or shrunk into a white dwarf. Use the time you have to ensure your survival.
Why similar: Nature 13.2%, Building 13.2%, Sandbox 12.6%, Space 12%, Space Sim 11.6%
- #38 Celestium
74% matchNo user reviews
Dev: alex197
Windows · Linux
An open world survival game set in space.
Why similar: Space 15.8%, Sandbox 15.2%, Space Sim 14%, Building 12.5%, Base Building 10.3%
- #39 Starvector
73% matchNo user reviews
Dev: Justus BlairPub: Octopus Inc. Studios
Windows
Eat a snack while you watch an entire planet burn in your image.
Why similar: Sandbox 17.2%, Building 14.2%, Space 12.6%, Space Sim 11.4%, Exploration 11.3%
- #40 Reforj
72% matchNo user reviews
Dev: 4J Studios
Windows
Reclaim the future. Rewrite the past. Reforj the world.
Why similar: Sandbox 17%, Building 12.2%, Base Building 12.1%, Crafting 11.7%, Choose Your Own Adventure 10.1%
- #41 Outer Space Shack
73% matchMixed43% of 14 reviews2023
Dev: Open Lowcode SAS
Windows
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: Science 20.8%, Space 14.4%, Space Sim 11.8%, Base Building 10.6%, Sandbox 9.7%
- #42 Space
72% matchNo user reviews
Dev: Neila Games
Windows
Stranded on a hostile alien world, you must gather resources, craft tools, and automate production to survive. Build a base, fend off deadly wildlife, and uncover ancient secrets in this immersive sci-fi survival adventure. Will you conquer the planet or succumb to its perils?
Why similar: Sandbox 15.6%, Space 14.5%, Building 13.6%, Space Sim 12.9%, Base Building 10.9%
- #43 Reassembly
71% matchVery Positive94% of 4,074 reviews2015
Dev: Anisoptera GamesPub: Indie Voyage
Windows · Mac · Linux
Median: 5.0 hrsMean: 26.1 hrs≥1hr: 84%
A spaceship building and universe-exploration game. Collect resources, expand and grow your fleet, and conquer your personal galaxy. Stellar ambience by Peaks.
Why similar: Building 29.8%, Space 26.8%, Sandbox 24.9%, Strategy 7.6%, Exploration 5.2%
- #44 Space Elevator Project
70% matchNo user reviews
Dev: VanilliA Studio
Windows
A simulation sci-fi game where players take on the role of the project manager of a space elevator project. They will progressively achieve project phase goals and ultimately accomplish the ultimate goal of constructing a Mars colonization spacecraft.
Why similar: Space Sim 21.6%, Space 14.3%, Building 13.8%, Strategy 13%, Exploration 11.3%
- #45 Tides of Despair
71% matchMixed42% of 19 reviews2023
Dev: Survival Poly Games
Windows
After a shipwreck, you are one of the survivors. To Survive you will need to fight for your life.
Why similar: Building 19%, Base Building 15.8%, Sandbox 15.7%, Crafting 13.7%, Survival 12.7%
- #46 Wayward Beyond
70% matchNo user reviews
Dev: bitfish
Windows
A retro-future sandbox RPG set in a frontier era galaxy with procedurally-generated elements. Create, explore, trade, and battle to stake your claim among the stars of a wild galaxy!
Why similar: Sandbox 14.8%, Building 14.8%, Space Sim 13.1%, Space 13%, Base Building 10.7%
- #47 The Last Starship
67% matchMostly Positive75% of 1,596 reviews2026
Dev: Introversion Software
Windows · Mac
Median: 6.1 hrsMean: 11.3 hrs≥1hr: 81%
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!
Why similar: Science 15.3%, Sandbox 14.8%, Space Sim 14.3%, Building 14.2%, Space 14.2%
- #48 Initial Civilization
69% match2 user reviews0% of 2 reviews2026
Dev: Sun Peiyi
Windows
A vast 6 handred-square-kilometer world evolves gradually step by step from the wild primitive age all the way to the advanced interstellar age, where countless spaceships are carefully built one after another to boldly explore the boundless outer space.
Why similar: Space 21.3%, Building 20.7%, Survival 14.8%, Crafting 13.4%, Space Sim 11.5%
- #49 Galaversal Supremacy
70% matchNo user reviews
Dev: Sednari
Windows
Choose your own adventure in this open-world humanity expansion space simulation. Travel beyond the constellations to new frontiers. Explore, collect resources, supply the expansion efforts, or go battle it out spaceshooter style. Do we seek Galaversal Supremacy or peace? You decide !
Why similar: Choose Your Own Adventure 19.1%, Space Sim 13.7%, Space 12.6%, Crafting 12.2%, Sandbox 10.5%
- #50 Yuri's Resolve
68% matchNo user reviews2026
Dev: Apothecary Games
Windows
Yuri’s Resolve is a single-player factory-building game set in Mars' orbit. Salvage wreckage, mine Phobos, construct manufacturing systems, and forge a path back home. Operate from the immersive cockpit of your ship as Yuri’s Resolve delivers a bold, innovative take on the factory building genre.
Why similar: Space 14.8%, Base Building 13.5%, Crafting 12.1%, Sandbox 11.8%, Space Sim 11.4%
- #51 BitRoca
66% match5 user reviews60% of 5 reviews2026
Dev: BitRoca
Windows
Grab a pickaxe and stake your claim. Bitroca is a sandbox survival MMO where your machine fuels every swing, every wall, every win. Mine, build, defend, and trade on a living frontier where the power of the players shapes what the world can become.
Why similar: Choose Your Own Adventure 21.3%, Sandbox 16.4%, Building 15.7%, Space Sim 12%, Exploration 10.9%
- #52 Duskisle
68% matchNo user reviews
Dev: Defender Point
Windows
Explore a deserted island, collect resources, build a settlement from the ruins and survive the pitfalls of the wilderness. Every step holds danger, every night brings a new challenge. Nature will break you or make you stronger.
Why similar: Choose Your Own Adventure 20.4%, Sandbox 18.2%, Building 13.9%, Nature 10.9%, Exploration 9.6%
- #53 Farmcoz
67% matchMostly Positive77% of 82 reviews2024
Dev: Wigtor
Windows · Linux
Cozy Sandbox Game about Farming and Building. Is it raining outside? Just chill and relax with warm and cheerful atmosphere of Farmcoz. Farm, Build, Explore, Explode and Unlock all items. Good luck!
Why similar: Sandbox 20.1%, Building 19.1%, Nature 17.4%, Crafting 12.8%, Exploration 9.9%
- #54 Craft Hero
67% matchVery Positive84% of 402 reviews2022
Dev: PandaCat 熊喵独立游戏Pub: OKJOY
Windows
Gather resources by day, build and recruit by noon, defend your village by night! A new minimalism sandbox survival with countless new ideas – Craft Hero
Why similar: Sandbox 18.3%, Building 16.8%, Base Building 14.8%, Crafting 13.2%, Strategy RPG 11.1%
- #55 Survivor Island
69% matchMixed63% of 27 reviews2018
Dev: SGStudio Games
Windows · Linux
Try to survive on this island by collecting resources and building items that will help keep you alive.
Why similar: Sandbox 20.4%, Building 19.1%, Nature 15.9%, Crafting 14.1%, Exploration 12.3%
- #56 MewnBase
66% matchVery Positive93% of 1,439 reviews2023
Dev: Cairn4
Windows · Linux
Median: 4.9 hrsMean: 7.8 hrs≥1hr: 74%
MewnBase is a space-cat survival and base-building game. Scavenge around a barren planet for items to keep you fed. Explore and collect resources. Craft items and grow your base to help you survive.
Why similar: Sandbox 17.1%, Space 15.8%, Building 15.4%, Base Building 15.1%, Crafting 12.9%
- #57 Voidless
67% matchNo user reviews
Dev: Retnuh Studio
Windows
Voidless is a sci-fi space survival sandbox set in the near future within a realistic scale solar system. In first or third person, players can explore planets and asteroids, collect resources, and craft items. As well as building bases and ships, all with physics based flight and combat.
Why similar: Space Sim 17%, Sandbox 16.6%, Space 16.3%, Building 12.8%, Base Building 11.1%
- #58 Star Rangers™ XE
69% matchMixed40% of 153 reviews2016
Dev: Project Whitecard Studios Inc.Pub: Awestruck Games
Windows · Mac · Linux
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: Science 16.9%, Sandbox 15.9%, Building 15.5%, Space 13.9%, Space Sim 10.8%