Top similar games like Celestium:

Medusa Frontier is a budget sci-fi survival game being developed with OpenGL & C++. Gameplay is currently limited to resource gathering and base building on a 1k terrain map.

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.

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?

A space survival crafting mining base building and star system building game. Craft rockets to create planets and Dyson Rings, mine and craft advanced materials, terraform the terrain, manage electricity, farm food, and more as you watch the star system evolve into stunning, ever-changing views.

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.

LithoBreak is a survival factory-builder grounded in real physics and engineering. Build and automate a lunar colony, explore in first-person, and survive constant orbital threats – all while you Play with Science

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.

An immersive survival crafting adventure game set on an alien planet. Explore the surroundings and build an understanding of the world around you. Create tools, devices, and structures to overcome the limitations of the harsh environment and unravel the mysteries of the unknown signals.

Starfall Protocol is a Starship colony sim with RPG adventures in a galaxy with millions of explorable planets!🌌

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.

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.

The ultimate space capital ship combat compendium is the evolution of hard core space combat sims. The only game of its kind currently in existence.

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.

After a century in cryosleep you find yourself stranded amidst the ruins of mankind’s first interstellar colony. Explore derelict ships and stations and harvest raw resources in search of air, fuel and other equipment. Or loot and pillage what you need from other survivors. The choice is yours!

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 open-world game that challenges you, alone or with friends, to turn a hostile planet into a habitable haven for humanity.

Welcome to the Red Planet! Mars Colonization Survival Simulator offers you the opportunity to take on the role of the first pioneers of Mars. You will find yourself in extreme conditions with limited resources and your mission is to build, develop, sustain and explore the mysterious Martian terrain.

Grab your jetpack and explore procedural asteroid fields, derelict spaceships and abandoned outposts. Build and automate your Space Rig to process scavenged trash. Craft, trade and fight your way home in this interstellar, open-world survival sandbox.

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?

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?

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...

Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.

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.

Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

Terraform a dead planet back to life in this open world survival crafting game. Explore ruins, gather resources, print machines, drive modular vehicles, grow forests, biomes, and ecosystems and create life and make it thrive with your own hands.

Embark on a galactic journey in Cubic Odyssey, an open-world adventure where you explore vibrant planets, craft tools, build vehicles, and fight the Red Darkness. Uncover ancient mysteries, and shape a universe full of life, danger, and limitless possibilities!

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

Welcome to our sci-fi space adventure, where players take on the roles of a crew aboard a spaceship as they work together to survive in the vast and dangerous universe.

Build ships from scrap and fly them in a gritty, realistic space sim. Venture solo or team up. Hunt for parts, haul vital resources, and keep your space agency afloat.

You’re trapped in a mine, forced to repay the debt left behind by your late grandfather. Dig, explore, build, and earn your way out — one rock at a time.

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.

No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.

The conquest of the Solar System has begun – prove yourself as a space colonist! Pilot the spaceship, choose the planet you wish to inhabit and build your new home. However, remember that there are no rules or laws in outer space. Don't underestimate the danger and stay vigilant – enemies are near!

Sigma World Online - is an online sandbox with a huge world from many star systems. Choose who to be: space explorer, miner, merchant, farmer, culinary specialist, scientist, builder or hunter, or build your empire.

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!