Top similar games like Untethered:

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.

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!

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 the lone survivor orbiting a potential new home planet, tethered to what’s left of your ship. Gather nearby debris and assemble a make-shift vessel in an attempt to survive the harsh realities of space. Maybe you'll live long enough to uncover the truth behind the ship's malfunction...

Aboard the Fusion Voyager rocket originally set for Mars, you find yourself in a state of panic as you scramble to save what is left of the mission. Your efforts were unsuccessful and you are now the sole survivor of the crash which left you somewhere in the pacific ocean. Survive. Build. Explore.

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!

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.

Honeycomb: The World Beyond is a survival-sandbox game set on an exuberant planet – Sota7. Explore its vast world and face challenges on your bioengineering journey. Crossbreed plants or animals, gather resources, craft items, and conduct experiments in order to develop new species.

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.

A space survival open world terraforming crafting game. Transform the ecosystem of a hostile planet to make it livable for humans. Survive, collect, build your base then create oxygen, heat and pressure to make a brand new biosphere.

After years of living underground in the safe zone you return to what is left of a once-thriving city after a nuclear war. Learn to avoid the radiation, scavenge for resources, craft tools and build shelter in this first person dystopia simulator.

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.

A game of aerospace industry and interplanetary exploration.

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.

Play with up to three companions and become the best shipwrights on this side of the globe! Explore and gather materials needed to build legendary ships! Soon they will call you a legend as well.

Abiotic Factor is a survival crafting experience for 1-6 players set in the depths of an underground research facility. Caught between paranormal containment failure, a military crusade, and chaos from a dozen realms, the world’s greatest minds must survive against the universe’s biggest threats.

Camping Simulator lets you experience what camp means by preparing your backpack wisely for challenging conditions of nature. You can play all the experiences with up to four friends in multiplayer mode or single player mode.

In Spaceflight Simulator, you will get to build your rockets, plan launches and flights, attempt landings, deploy payloads and explore new worlds.

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.

Forever Skies is a first-person post-apocalyptic survival game. Return to Earth, ravaged by an ecological disaster. Fly, upgrade and customize your mobile high-tech airship base. Scavenge resources to survive, face dangers on the surface and hunt for viral pathogens to cure a mysterious illness.

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

While searching for a new home, an unexpected failure in your ship has left you stranded on a planet surprisingly similar to Earth. Discover a vast open world, hunt for food, develop technologies, and build yourself a new home to survive!

Plunge into the open world survival simulation set in the extreme conditions of the uncharted Amazon jungle. Use real-life survival techniques to craft, hunt, fight and gather resources, set a makeshift shelter or raise a fortress. Tend your wounds and maintain mental health - alone or with friends.

Take On Mars places you right in the middle of mankind’s most exciting undertaking. Start out in the seat of a rover operator, finish as the first human to have ever set foot on the Red Planet.

Realistic physics-based open-world survival game set in the future. Survival, crafting, exploration and base building are the main focus. Hunt for food and water and survive against environmental hazards. Combat is possible, but more defensive in nature.

Project Castaway is a survival crafting title set in the Pacific Ocean. Live the life of a stranded castaway, with only yourself - and the island's inhabitants - for company! Sail the ocean, hunt, explore unique islands and gather resources as you fight for survival.

Discover a whole new world with Mars City Builder! Construct roads, erect buildings customize the city and take care of its safety. After all, you are the first Martian settler and this is a vast, unknown land. Develop it in any way you please!

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.

Welcome to Noah's Ark, a realistic simulator game inspired by stories from Genesis of the Bible. Now it is time for you to be like Noah and build famous vessel, save (hunt) animals and survive during the biggest flood ever. Are you ready for this challenge?

Starsand is a mystic survival game set among the dunes of an arcane desert. An open-world full of danger, vast environments and mysterious happenings await you! Explore, hunt, craft, build – and SURVIVE.

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!

Embark on an unpredictable survival journey in Start Over. Solo, co-op, online, explore diverse landscapes, craft through 4 tech tiers, encounter wildlife, and trade or raid for resources. Choose your path, defend against waves, and shape your destiny in a dynamic world. Are you ready to Start Over?

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.

Survive in outer space! Together with your immortal chicken, discover the truth behind your sudden spaceship crash. Craft tools, pilot vehicles, and even control space stations to survive and explore the wreckage.