Top similar games like Celestium:

Build an automated factory on a true-scale Mars streamed from real NASA terrain. Mine, smelt and belt resources, run trains between outposts, master chemistry, and grow from a lone lander into a planet-spanning industry while the real Martian weather does its worst.

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!

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!

A sci-fi, base-building adventure where you build a 'ship' on an asteroid; explore space, battle slimes, raiders, space rhinos, and more. A story that includes following orders from a mysterious AI, shooting fish with a space grappling hook, invading space stations, fixing the exploded moon, etc.

A survival engineering game where you build life support habitats, mine resources, and automate production chains on a radiation heavy planet. No rescue. No support. Just engineering.

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.

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!

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!🌌

Unknown Horizon is a retro styled top-down space exploration adventure where you will meet new alien races, learn their secrets and build their trust to get their help to find a way home.

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.

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!

Survive, craft, and automate in this free prologue set on one of the planets you can transform in Eden Crafters, an open-world game where you play solo 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.

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?

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?

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.

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.

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.

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.