Top similar games like Planternauts:
Planternauts $14.99
Welcome to Planternauts – an immersive adventure in planetary terraforming where you play as a brave explorer tasked with greening barren landscapes. Explore, discover, and transform an alien world into a lush paradise by initiating a grand project to create a new ecosystem.
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SHEEPO$9.99
Explore a strange planet, collect the creatures you find, and then shape-shift into them to expand your world. Build your own path, chat with the locals, and discover the planets sprawling secrets in this quirky metroidvania platformer.

Novus Inceptio$19.99
Warning: This is an Early Access game! Welcome to an enigmatic world, where a new gaming experience in exploring, building and surviving is waiting just for you. Experience a sandbox world with survival elements, and join us in creating a full version of the game.

Planetaries$19.99
Experience a vast Sci-fi open-world survival TD game set on a distant planet deep in the universe. Craft, build, mine, trade, explore, and survive in this alien world. Collect Data and defend against waves of enemies seeking to banish you. Enjoy the adventure in Singleplayer or Multiplayer.

Wasted World$19.99
The apocalypse has come, brought by pollution, wars and disease! Your mission is to save your land... or what’s left of it. Alone or with your friends gather, recycle, craft, build, plant, explore, fight & help survivors.

Keplerth$14.99
Welcome to Keplerth! Try to survive on a hostile alien planet in this 2D sandbox RPG, where you can choose to live alone or fight side by side with your friends in the online multiplayer mode. Survive, build, farm, fight, and explore your way to victory in this open-world adventure!

Edge of Space$14.99
Suit up as an operative of the Ark Corporation, sent to the farthest reaches of the universe in search of habitable planets to terraform. However, after the long space journey you awaken from cryosleep to find that your ship has gone way off course and is disabled near a strange new world.

Under A New Sun$16.99
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!

Low OxygenFREE
Explore an abandoned facility on the planet you've crashlanded, solving puzzles with strange plants along the way.

Astral Terra$9.99
Explore, Adventure, Craft, Build, Survive. How will you shape your world? Astral Terra is a Smooth Voxel, Procedurally Generated Open World game with RPG and Survival Elements!

Beware Planet Earth$4.99
Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!

QANGA$19.99
QANGA: Dive into a sci-fi adventure of exploration and resilience across the cosmos. Merge your mind with a state-of-the-art cyborg crafted by ICLab's Industry labs, and journey through this expansive universe!

Hoboman$1.99
Hoboman is a 2D NES-style platformer with a unique Sci-fi story and wild characters. Play as Pluto the Voltran as you hop ships from planet to planet and collect geodes to get your life back!

Grow Up$9.99
Leaping from mind-boggling heights, bouncing off Champolines, soaring inches from floating islands, BUD can do it all - that look of mild terror, that’s his daredevil face. Help the adorable little robot collect MOM’s scattered ship parts and return them to the moon.

GRAV$19.99
GRAV is a sand box experience where you explore a multitude of planets, hunt strange alien creatures, build and defend outposts, craft weapons and armor, and attempt to survive against other players in a hostile environment.

A Hat in Time$29.99
A Hat in Time is a cute-as-heck 3D platformer featuring a little girl who stitches hats for wicked powers! Freely explore giant worlds and recover Time Pieces to travel to new heights!

The Solus Project$19.99
The Solus Project is a single player exploration adventure with survival elements. The adventure is set on a mysterious planet and is the spiritual successor to The Ball - 2010 PC Gamer Action/Adventure Game Of The Year...

Inside The Cubes$3.99
ITC is the story of Andy who is kidnapped by Tisafolians. Andy is put into a station, in where there is no gravity, to be tested some skills that are observation, analytical intelligence, eye hand coordination, weakness, etc. Your choices matter and change the end of the game.

Convicted Galaxy$14.99
Stranded in an unknown galaxy full of escaped prisoners who grow stronger with every passing moment. Build a space station, upgrade your ship, and dogfight your way out of the galaxy. Take risks when necessary, but don't forget that you only have one chance.

Grow Home$7.99
Experience the freedom of unbounded climbing as you take control of BUD, a procedurally animated robot on a quest to save his planet. Create your own path through an alien world as you control and ride a giant plant on a vertical journey to the stars.

Osiris: New Dawn$34.99
Osiris: New Dawn is an unforgiving near future space survival game with a cinematic feel and elements of horror. Play as a Mission Specialist in single or multiplayer to build your planetary base, pilotable vehicles, and controllable drones as you explore a dangerous solar system far from Earth.

Planet ExplorersFREE
Planet Explorers is an open world sandbox adventure RPG game set on a distant planet. The game uses a new OpenCL calculated voxel system to allow players to change the terrain in any way, create new objects such as weapons, vehicles, objects, and do it anywhere.

Slime Rancher$19.99
Slime Rancher is the tale of Beatrix LeBeau, a plucky, young rancher who sets out for a life a thousand light years away from Earth on the ‘Far, Far Range’ where she tries her hand at making a living wrangling slimes.

Super Motherload$14.99
Set on Mars in an alternate Cold-War era, Super Motherload is a 1 to 4-player couch co-op digging adventure with storyline by Image Comics' Kurtis Wiebe, a fully voiced cast of Soviet and American characters, and a procedurally-generated world that changes each time you play.

Kingdom Traveler$7.99
A survival exploration game where you can explore islands, challenge various monsters and defeat powerful Bosses. Craft various weapons and items, place items, grow vegetables and fruits, and trade with merchants. Set sail in the harbor, encounter pirates, monsters and random events in the sea.

Space Otter Charlie$14.99
Adorable characters? Check! Makeshift weapons? Check! Otter dressed in a foam shark suit. Umm. Check? Join Charlie and his ragtag team of sea mammals as they jump, float, and rocket through Otter Space in this Zero-G Puzzle Platformer!

Aurendor$1.99
Aurendor is an open world survival game. Players must gather resources, cook their meals and fight dangerous creatures to survive and build a home for themselves. Aurendor also offers a multiplayer game option. Players can play together by cooperating with or battling other survivors.

Star Explorers$4.99
Planets, aliens, resources, upgrades, caves, mapping & documenting star systems ... seek a new home for the human race. An all-inclusive (admittedly janky) procedural space-sim made by solo developer Schmidt Workshops.

Phoning HomeFREE
A tale of survival about two shipwrecked robots - ION and ANI - on their life-defining journey in this unique genre-mix of exploration, puzzle and survival.

MoonWool$4.99
MoonWool is a sheep herding game in a space cartoon universe. You must save your sheep stranded in the cosmos ! On tiny planet, you will have to guide them into safety, against dangerous hazard and monsters !

The Unknown$2.99
Aboard a small spaceship, you embark on an exploration, daring to face the threats of the universe. Activate your spaceship and uncover the hidden secrets of this vast cosmos.

Astro Pig$9.99
A 90-s inspired lo-fi adventure puzzle platformer about a piglet astronaut and his intelligent ship.

WarpVector$4.99
WarpVector is an immersive sci-fi roguelike built around space exploration, combat, and navigation. Explore the remnants of an ancient civilization, fend off marauding space pirates, and find a way to save your home planet.

The Great Perhaps$9.99
The Great Perhaps is a time travel puzzle game about an astronaut returning to Earth destroyed by natural cataclysms. There, among the ruins he finds an unusual artifact — an old lantern, in the light of which you can see glimpses of another time and travel to the past.

Exploaris: Vermis story$11.99
The main character of the game, Arisa, because of the breakdowns of the spaceship gets to an unusual and beautiful planet full of various monsters, which was not part of her plans. You will need to help the heroine repair the ship and get out of this planet.

Planet MortFREE
Adapt and live

Project Starcrash$6.99
Use your powerful punches to defeat alien invaders in this side-scrolling action platformer.

Cosmorists$9.99
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!

Starship EVO$19.99
Create the Starship of your dreams, explore the vast expanse of the galaxy, land on planets and jump into epic space battles. Experience a truly unique and powerful building engine where your imagination is the limit. Welcome to the next evolution in Space Sandbox gaming!

DeliSpace$9.99
Deliver packages... in space! Test your agility by navigating through different galaxies carrying diverse packages and upgrade your ship. Will you become the best courier in the universe?

Alien AI$9.99
An Alien AI came to Earth 20 years ago. We believed it was the greatest event in human history. The Alien AI offered us all the knowledge and technology it had. All we had to do was to help it recover and give it resources. We did.. It took over the world and enslaved us. Help us shut it down.

Astrometica$19.99
Astrometica is a space exploration and base-building survival game. After a catastrophic event, explore vast space, gather resources, build bases, and uncover cosmic mysteries. Use advanced technology, craft tools, and discover new blueprints to survive and thrive in the unknown.

Stellar StablesFREE
In Stellar Stables, you are an intergalactic alien-horse farmer, making your way through point and click puzzles and intriguing mini games to obtain horses and food for them. Watch as your Horse Happiness Meter grows and your stables fill up with all kinds of unique and lovable creatures!

Signs of Life$9.99
Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, Mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.

CAT Interstellar$9.99
A short story inspired by Robert Heinlein's:The Moon Is a Harsh Mistress

Evochron Legacy SE$24.99
Advanced Space Flight, Combat, Trading, and Exploration Simulation. Set in a vast explorable universe, Evochron Legacy offers freeform gameplay with many diverse objectives and paths to choose from.

Satisfactory$39.99
Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!

Space Bob vs. The Replicons$14.99
Help clueless Bob survive his first day of work in this procedurally generated, planet hopping, gravity simulator. Haul loot and resources back in to orbit while simultaneously fighting off a full scale alien invasion in this rogue-lite survival hybrid quite unlike anything you've played before.

★ Fallalypse ★ Death or Cress ♝$199.99
The communication with SH42 looking for new planets suitable for life was lost. The last message sent from it said: "Death or Cress". A space-marine and a priest of the newly-formed Space Battle Church set out on a search of the survived or to read the funeral service for the remains of the dead.

Minimal Move$4.99
A story-driven cooperative puzzle game. Your adventure starts when two space investigators, Ido and Kaiten, land in a wonder cubic world, where they attempt to discover the truth about the planet…Engage your brain, cooperate with each other, solve the puzzle and think in 3d!

Space Gladiators: The HoleFREE
Ever dreamt of being a space potato? Now’s your chance! This is the prelude for Space Gladiators, a 2D hand-drawn roguelite platformer following a bunch of captives fighting their way out of a planet prison. Defeat hordes of aliens in the gladiatorial arenas and earn your freedom!

SUPER MAZE PLANET$0.99
Super Maze Planet is a relaxing Retro maze game that gives you bigger mazes as you progress through the levels. Super Maze Planet has over 900 mazes in 10 zones, with coins to pick up and characters to collect. When you earn enough gold you can unlock infinite procedural mazes too!