Top similar games like Celestium:

Interstellar Rift is an open world starship simulator with an emphasis on ship construction and multi-player interaction. Survive in a hostile galaxy with your own custom designed and constructed starship. Invite other players to join your crew or fight them across the galaxy!

Red Planet: Survive is a first person survival game for Microsoft Windows. Surviving in the harsh conditions of the Red Planet will be hard, but if you are strong enough, you will succeed. Find the best way to survive, but be careful, since each wrong step will ensure your demise. The environment is your main enemy.

LithoBreak is a sci-fi survival crafting game packed with resource collection, construction + repair mechanics, orbiting moons, and science-backed simulations. Explore the Aristarchus star system, build complex production systems, and fend of the ever-growing VECS threat.

Play as an astronaut on our moon in the future. Your task is to prepare the moon for future colonies by terraforming. Collect resources, explore procedurally generated caves, build buildings and create a second world for you and our earth.

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.

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?

Stars End is a multiplayer sci-fi survival game set hundreds of years in the future in a star system colonized by humans. Come and join us for crafting, construction, missions and PvP on the wild frontier...

Embark on a journey of survival, crafting, and automation in this free prologue introducing one of the planets you can transform in Eden Crafters – an upcoming co-op, open-world game that challenges you to turn a hostile planet into a habitable haven for humanity.

You were deep in uncharted space on a research mission. Disaster struck. Together with your friends, explore a mysterious asteroid field and mine whatever resources possible to build what you need to survive.

You find yourself completely alone on a different yet very familiar looking planet. Explore the planet, craft tools, fight enemies, and build bases! Do science to learn new technologies that will allow interplanetary travel and better tools at your disposal!

Discover Voltcube, an infinite, uniquely generated block universe. Create machines, explore a multitude of biomes, and build to your heart's content. Survival or creative, every playthrough offers a unique journey.

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. Who knows when Natural Selection is at the wheel!

Set on small procedurally generated planets, PoliPlanet is a unique first-person city building game. Discover new planets, gather resources, craft, explore, and build.

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.

Lost Away is a first-person survival action game set light-years away from our solar system. After a spaceship crash, the protagonists find themselves the lone survivors on a mysterious planet where nothing is quite as it seems.

Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.

A riveting space survival adventure. Stranded on a hostile planet, scavenge resources, craft tools, and navigate dangers. Explore a vast, procedurally generated universe, forge alliances, and confront the mysteries of deep space. Will you conquer the cosmos or succumb to its perils?

Medusa Frontier is a science fiction survival game being developed with a custom engine. Development is currently focused on resource gathering and base building on small test map.

Crafting Block World is an adventure with sandbox elements that will help you build your ideal world!

You have crash-landed into a mini-verse of tiny planets. Welcome to Minicology! Embark on an interstellar survival sandbox journey. Use your crafting, combat, and automation skills to survive the many challenges this mini-verse throws at you.

A sandbox survival game, set on life-sized voxel planets with realistic physics with the possibility to shape your own building blocks. From your custom made furniture, walls to vehicle parts. You shape the blocks which can then be used to build buildings, spacecraft and aircraft.

Astrometica: Prologue is the free game about surviving in space. You need to use your skills and tools to stay alive. There are many challenges to face, and you need to fight to survive. You also need to build a new base in space.

In the 19th century in the Wild West, you are a poor farmer wanting something more from life: you want an adventure. Sit on a horse and become a Cowboy, unfortunately it won't be that easy because many dangers await on that path and you are no hero yet.

TerraTech Worlds is an open world, build-craft adventure game, set on an uncharted alien world. Play solo or with friends, explore your surroundings, craft unique vehicles, construct automated bases, and battle your way through hazards and enemies to harness the power of your environment

ICARUS is a PvE survival game for up to eight players. Explore a savage wilderness in the aftermath of terraforming gone wrong. Survive the Open World, complete timed Missions or build your Outpost. Explore, build, craft and hunt while seeking your fortune and prospecting for exotic matter.

A game of aerospace industry and interplanetary exploration.

Embark on a journey of survival, crafting, and automation in Eden Crafters, a co-op, open-world game that challenges you to turn a hostile planet into a habitable haven for humanity. Temper the climate, create a breathable atmosphere, and turn toxic lakes into water: shape a new world!

A first-person survival and automation game where you build factories run by drones to power a machine that terraforms a planet. Build bases, prepare for storms, and harness the weather along the way!

You wake up alone in a damaged space station with no memories. To get out of here, you will have to build your own spaceship. But survival comes first: gather resources, build a base and a factory out of gear and steam, and explore hand-crafted planets with unique biomes and resources.

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?

You are a Scraponaut, create your own spaceplane with unique parts each affecting the way your plane behaves. Collect scrap while exploring procedurally generated islands, unlock and discover unique new parts to upgrade your spaceplane.

Inno World - interesting sandbox, there you can change landscape as you want.

Remains - survival in outer space orbiting the planet. Explore the area. Find a way to restore oxygen. Create tools for your needs. Beware of the dangers of outer space. Build your shelter in orbit and try not to die!

A deep starship colony sim. Build your starship, manage air, water, food, fuel, energy, temperature and psychology to keep your crew alive across vast distances. Closed-loop system in space. Mining, wiring, plumbing, in-ship factory, (alien?) radio signals & translation, diplomacy, combat, and more.