Games like Space Outpost Sigma

Welcome to the asteroid belt. The work is dangerous, the asteroids are temporary, and Earth is prohibitively expensive. Build automated mining operations, complete contracts, and earn your way back home.

Blast through rocks with your machine gun drill. Collect rare gems, ores and ancient artefacts, upgrade your ship and unlock new abilities. Uncover the mysteries of the deep and the dangers that lurk below.

An action roguelite game with alien swarms and mechs. Battle enemies to make your way through a mass of spreading and evolving cells hosting dormant enemies. Collect a variety of game-changing skills and upgrades to create unique builds.

Star Survivor is a space-themed survival game that blends intense deckbuilding strategy. Pilot humanity's last spaceship through the vast galaxy, Unlock powerful weapon combos, collect card modules, and craft unique builds. As the enemy swarms grow denser, will you be the last one standing?

Defend Mars from humans

Stranded on a barren moon with nothing but your tools, fuelless ship, and celestial powers of creation, you are destined to recreate what was once lost and be the hero of your own Little Universe! Don't forget to call in up to three of your friends to join your journey in the Splitscreen Co-op Mode!

A physics based twin-stick shooter. Survive as long as possible and get a high score. Use your gravity beam or your gravity mine to destroy endless waves of enemies.

The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!

Take control of a giant mech and dive into an exciting underground adventure in a dieselpunk world! Dig deep, collect valuable minerals, upgrade wisely, explore diverse locations, uncover ancient secrets, and try not to explode! Will you save the world or vanish in the depths below?

Explore dungeons, fight hordes of monsters and survive on a huge map. This is Ocean Keeper - an action roguelike with tower defense elements. Mine resources in caves, customize your Mech Spider, upgrade different weapons and face dangerous bosses that won't leave you a chance!

Build and fly your own airplane! Complete missions to earn money, upgrade your plane, and discover new locations in an open world.

Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.

Build a formidable factory and go dungeoning alone or with friends. Solve logic puzzles and automate resource collection and crafting, or venture into dungeons filled with dangers and rewards. Find your own ideal gameplay balance, as any unique path will advance the story!

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.

Space Engineers 2 is a playable Early Access Alpha sandbox focused on engineering, exploration, and colonization in a fully destructible universe. Design and build ships, stations, and planetary bases while uncovering the story of Miro and Ivan Sokol. Help shape the future of the Almagest system.

A short horror game where you control a decaying spacecraft exploring distant star systems.

Unleash your inner miner as you commandeer a high-tech Mining Mech! Mine for valuable resources and upgrade your mech for even bigger hauls as you explore the underground. Fun to play alone or with up to 7 friends in online co-op multiplayer!

Dawn Apart is a space colony and factory sim with fully destructible environments. Mine, automate, and defend your settlers, or lead a rebellion against the very corporation pulling your strings…

A minimalist game about digging a hole in the garden of a newly purchased house. Collect resources, sell them, upgrade your equipment and discover a mysterious secret. Costs you only one coffee!

DigDigDrill is an underground mining and resource collecting game. Dig freely for minerals and treasures. Use the items you collect to forge your original drills in a hack-and-slash style equipment system.

Navigate your scrappy ship through the boneyard in search of valuable parts in abandoned vessels. Use salvage to upgrade your ship, or sell it for cash to pay down your mounting debt, or restock fuel, air, or food. Fly and role-play aboard your dream spaceship in this hardcore noir space-sim.

Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.

Deep Space Cache is a short & simple semi-idle bullet heaven incremental asteroid miner game.

A sci-fi space vehicle combat game, where the player must defend their capital ship from being destroyed, while attempting to destroy the alien force's own capital ship!

Choose your pilot and build your own custom mecha with 17+ weapons and 55+ attachments, then jump to the battlefield against hundreds of enemies to save spacetime itself in this thrilling sci-fi bullet heaven!

Doug The Digger is a casual, single-player mining and crafting game where you aim to escape a crash landing by crafting a rocket. The gameplay is simple but addictive—play at your own risk!

Control a variety of robots and destroy invaders from outer space in order to save the destroyed earth! "GAIA Survivors" is a 'Shoot 'Em Up' type sci-fi rogue-lite casual game with a retro-futuristic worldview.

Dig mines, extract resources, and produce goods to restore order to the state. Become a successful businessman and an effective state governor in the late Wild West era!

A factory-building game. Survive a harsh climate, strip mine an infinite world, and build a sprawling factory, then trade or go to war with Colonists, Governments, Pirates, Rebels, and more!

(the) Gnorp Apologue is the journey of the gnorps as you guide them towards their goal of delightfully excessive wealth accumulation.

Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.

Starship Theory is a ship building survival game. Mine and trade to gather resources. Plan and construct new upgrades. Train and manage crew. Fight to survive.

Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.

QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance. Tear through the fabric of space to face the Voss, awaken the ancient civilisation, and dare to challenge the Sanglines, born from the bowels of a world that condemned you.

Eggs: perfection in two parts. The simple whites. The sublime yolk. Each the lesser without its partner. Chorus and verse. A symphony of flavor. The catchy tune reminding us of warm baths and late-night movies. The elevator music to whatever lies beyond.

Mine gems on an infinite hex board. Play as a cute robot stranded on an alien planet. Find ship parts to repair your broken space ship. Use markers and logic to find gems and avoid bombs. Skillful play lets you dig longer. Spend gems to upgrade Dig Bot. Unlock achievements for even more power!

Create a thriving space station in a lost sector. Face thrilling challenges head-on, from pirate raids to asteroid impacts, as you lead your company to new heights.

The Beach Episode™ of To the Moon, Finding Paradise, and Impostor Factory. But something's off.

Fly into a charming handcrafted world and go on an adventure that mixes up open exploration with crispy twin-stick shooter action. Fight your way from the shiny overworld to the deepest caves, improve your ship and overcome the dungeons' bosses to rescue your friends!

Now with over 600,000 copies sold, ZERO Sievert is a tense top-down extraction shooter that challenges you to scavenge a procedurally-generated wasteland, loot gear, and explore what’s left of a devastated world. When the odds are stacked against you, you’ll need to do more than just survive...

DEEP ROCK GALACTIC: SURVIVOR is a single player survivor-like auto-shooter. Take on hordes of lethal aliens, mine riches, and unlock powerful upgrades to survive, as you wield the full arsenal of Deep Rock Galactic. It's one dwarf against all of Planet Hoxxes!

Deadzone: Rogue is a roguelite FPS set in space. Blast through swarms of hostile machines, combine powerful augments and elements to forge your build, and grow stronger with each run — solo or in co-op.

The insect swarm is a swarm consists of millions of alien insects, and you, as the only survival on this barren planet, will have to fight against them dauntlessly. Good luck!

Gather resources, craft components, build vehicles, and code their logic in a physics-driven engineering sandbox and full scale space sim.

The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with mod support and PvP/co-op multiplayer. You're going to need a bigger ship.

Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?

Become an unstoppable force in this intense high-speed space combat roguelike. Master the Specter Drive’s displacement dash, build a devastating arsenal with your companion Merlin, and grow more lethal with every mission as you spearhead the counter attack across a solar system under siege.

Sid Meier's Alpha Centauri™ Planetary Pack includes the original Alpha Centauri and the expansion, Alien Crossfire.

Below the Stone is an extraction roguelike about dwarves on the quest for the deepest depths. A place where each and every descent will lead to new adventures -- and where only the most determined dwarves with many lost lives will be rewarded by the hidden world lying below the stone.

Fracture Field is an idle/incremental quarry mining game. Shatter rocks with timed swings then invest your earnings into upgrades. Build a fleet of drones to automate your empire, bomb tough layers, and unlock powerful prestige upgrades on your journey to master the quarry.

Gather crystals, repair/run crafting facilities, upgrade your spaceship, build machines, explore the open world, find your way back to mother earth.

Command an ancient starship and fight your way to the heart of a dying Empire. Fend off attacks from demented cultists, craven space pirates, and xenophobic Imperial soldiers. Discover powerful artifacts and use them to build your ship into a fearsome war engine.

A bullet heaven roguelite set in a procedurally generated universe. Land on planets to harvest resources, craft hundreds of game-breaking builds, and unleash them on relentless waves of aliens. Every run unveils a new universe: endless challenges, endless discoveries.

Rebots is a first-person automation game with an expansive universe to explore. Using intelligent(ish) rebots, you can gather resources, terraform planets, and scan all of the things. Traverse the galaxy in the name of space capitalism!

You are deployed to the desolate red planet to reforge humanity's hope. With no hospitable atmosphere, no nurturing water sources, only relentless storms, unknown alien creatures, you must use wit and determination to survive on this alien land and build a Mars base of your own.

Time Walker Dark World is a roguelike auto-battler with strategic combat. Players will need to adjust their formations, plan their resources, acquire loot, and upgrade skills to defeat formidable enemies and vicious bosses.

Glide and experience the mesmerizing world of fractals as you go through meticulously repeating landscapes collecting Mengerites and unlocking more endless fractals. Immerse yourself in this tranquil journey, finding awe in the beauty of math. Be careful not to crash though!

Space for Sale is an interplanetary, top-down Space Realty management game with a focus on problem-solving and exploration. Played either solo or with a friend, it's up to you to transform wild, uninhabited lands into bustling communities!

The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.

Exo Digger is a relaxing mining simulator set on a distant planet. Dig deep, extract rare minerals, upgrade your equipment, and expand your inventory. Explore the depths, but beware some areas of the mines may be dangerous. Who knows what secrets this planet holds beneath its surface?

Digseum is a short incremental journey about digging up ancient relics and building the greatest museum ever!

Dive into an epic adventure alone or with friends! Explore hidden dungeons, capture and tame fearsome monsters, build and defend your village. Craft powerful weapons, master magical spells, and transform an planet into the cradle of a new civilization!

Haul cargo, trade salvage and keep your space suit close as you search for fame and fortune among the stars in a game that puts an interstellar twist on the truck sim genre.

Build physically simulated rovers to transport awkwardly shaped cargo across the rugged terrain of Mars. Earn funds, unlock new parts, and use your ingenuity to help the Martians establish a new home. Playable solo or in online co-op!

TRAXION 2 is a cave-flyer with single-player, two-player local co-op, and deathmatch modes. Explore alien caves, battle enemies, and tow crystals to the surface with your tractor beam before your fuel runs out.

Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis! A battlefield swarming with insects makes strategic and combat decisions crucial. Each decision will determine your fate. Defend humanity's last sanctuary, fight fiercely, and uphold human honor with wits and courage!

Mine by day, defend by night. Master 25+ spells, sell rare ores for gear upgrades, and grow stronger each run in this procedurally generated roguelite tower defense. Enjoy full controller and Steam Deck support.

This is an old-school tank shooter set in space. Conquer newly discovered moons for Mega Corporation Mining Industry to earn your paycheck and make your parents proud! Win battles with your drone by blowing up your rivals in this retro pixel art game.

Help defend Earth's space base from invading enemy aliens in this incredible game to train reaction and aiming skills. Use your entire arsenal of weapons to destroy enemies of various types. Stand up to protect the planet. Best of luck!

Fight giant War of the Worlds -style aliens invading Finland during a Winter in the 90's. Build an army of local townspeople in this chaotic semi-autobattler roguelike. Navigate through different biomes to obliterate the aliens from cosmic dimensions.

Overwhelmingly bizarre beauty. Shoot, dodge, and destroy! A shmup where an apocalyptic world awakens to primal desires!

A cozy atmospheric exploration game about making your home in space, finding your way in a strange and whimsical universe, and the impact you have along the way.