Best Sci-fi Games on Steam
Unlike generic lists, our game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated sci-fi games.
Filters & Lists
Loading...
Galacticare
Build, manage and optimise intergalactic hospitals! Recruit staff to satisfy the whims of various alien species, and cure their bizarre illnesses - for money! Save the (literal) Galaxy in story mode, or head into sandbox to design the hospital of your dreams.
Mech Engineer
A dark sci-fi mech assembling manager with semi-auto battles against mutating, alien bio-weapon.
Bagel Love Story
A light-hearted and enjoyable short romance VN! The protagonist, Fan Tong, struggles to lose weight in hopes of finding a job, but the journey is far from smooth. Until one day, a cute and sunny girl named Bagel comes into his life, kickstarting a story of weight loss, cross-dressing, and romance!
Little-Known Galaxy
Join Space Alliance as a new captain-in-training and work with your crew to solve the mysteries of an ancient relic found on the Grey Planet. Little-Known Galaxy is a cozy single-player RPG space adventure full of friendly characters, exploration, crafting, and farming.
Voyager-19
A short horror game where you control a decaying spacecraft exploring distant star systems.
Arctic Eggs
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.
Kanna Maze
In an isolated lab beneath the earth, a childhood friend is resurrected. Amidst sealed walls, a spree of killings unfolds. In a godless abyss, parallel worlds entwine like a maze. Where does one find the path to the sole universe of bliss?
Classic Marathon
From the team that brought you Aleph One, the classic sci-fi FPS Marathon from Bungie on Mac revived for modern hardware by the fan community.
Cluckmech Oasis
Cluckmech Oasis, a top-down shooting Roguelike tower defense game. Play as the Warcluck and lead your team of animal heroes in a fight for survival. Collect, build and upgrade defenses, and engage in intense battle against waves of plant enemies.
1000xRESIST
1000xRESIST is a thrilling sci-fi adventure. The year is unknown, and a disease spread by an alien invasion keeps you underground. You are Watcher. You dutifully fulfil your purpose in serving the ALLMOTHER, until the day you discover a shocking secret that changes everything.
Dream Engines: Nomad Cities
A survival city-building game with flying cities. Build, automate, and defend a flying city that travels between procedurally generated maps to survive in a wacky, nightmare-infested, post-apocalyptic world full of strange science and dreams.
Genome Guardian
COMBINE WEAPONS in the microscopic roguelite turret shooter with macroscopic depth. Survive 6 modes using an astounding array of turrets, perks, mutations and power-ups on this psychedelic journey to the heart of the abyss. Shmup Mode turns it into a vertical shoot 'em up!
Cozy Space Survivors
A cozy time survival roguelite in space. You steer the shippy while the shooting happens automatically. Meet cute NPCs, solve small quests, and fight quirky enemies with satisfying weapons. A shorter experience for people who don't have much time but love playing (and finishing) games.
FOUNDRY
Build a sophisticated robot factory optimized to perfection in an infinite voxel world. Mine and harvest resources, automate your production lines and manage complex systems while researching your way to become the galaxy’s leading robotics megacorp.
Buy a Croquette!
March 2012, Nagano. The brave and clever high school girl, Chio Aozora, is facing a major crisis: she doesn’t have enough money to buy a croquette! Navigate through the streets and alleys of Nagano, interact with a variety of characters, solve complex puzzles, collect 380 yen, and buy a croquette!
Aliya: Timelink
The player connects to a girl in distress in space thousands of years later? How will they resolve the crisis and discover the truth? Through the mechanism of real-time synchronization, the game breaks through the dimensional wall and creates an immersive dialogue across time and space.
SaGa Emerald Beyond
FORGE YOUR OWN TALE The latest standalone entry in the SaGa franchise, SaGa Emerald Beyond, brings together the very best elements of the beloved series to offer each player their own unique gameplay experience.
Meta Ghost: Breaking Show
Immerse yourself in the reality show — "Breaking Show", where you engage in real-time battles with various intelligent machines using cybernetic enhancements and weapons. Whether for personal gain or lofty ideals. Fight! Until you reach the final victory on this Rogue-lite journey.
MEGATON MUSASHI W: WIRED
Launch a counteroffensive to take back the Earth from alien invaders in this mecha action RPG.
Phantom Fury
Shelly “Bombshell” Harrison is back in this highly interactive mix of first person action and road movie adventure. Embark on an adrenaline-fueled journey around the USA. Use an enormous arsenal of weapons and skills to battle treacherous soldiers and vile mutants, all while trying to save mankind.
Swarm Grinder
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.
Harold Halibut
Harold Halibut is a handmade narrative game about friendship and life on a city-sized spaceship submerged in an alien ocean. Join Harold as he explores a vibrant retro-future world in his quest to find the true meaning of ‘home’.
Anomaly Collapse
Command a squad of adorably fierce warriors in Anomaly Collapse, a turn-based Roguelite strategy game that offers a fresh twist to an old formula! Face off against otherworldly beings and uncover the dark secrets of supernatural calamities. Immerse yourself in a story where every move counts!
Revival: Recolonization
Set in a post-apoc version of Earth, Revival is a 4x strategy game where the world and its rules can change at key moments, creating a deep and highly replayable experience.
The Planet Crafter
A space survival open world terraforming crafting game, designed for 1 to 10 players. Alter the ecosystem of an inhospitable planet to render it habitable for humanity. Survive, gather resources, and build your base. Then, generate oxygen, warmth, and pressure to create a brand new biosphere.
Underspace
The spiritual successor to Freelancer with a Lovecraftian, sandbox RPG twist. Explore a vast handmade universe with Day 1 mod support and a planned PvP/co-op multiplayer on the Early Access roadmap. You're going to need a bigger ship.
Sketchy's Contract
A 1-8 player co-op sci-fi looter horror game that takes place on a mysterious asteroid belt where players must complete contracts by traveling to exotic planets to kill creatures, find loot, and/or farm planetary materials that they must return to an ominous figure named Sketchy.
Void Whispers
Assume the role of a broadcast engineer in a tranquil city. All seems peaceful until the sky above starts to reveal something deeply unsettling.
Content Warning
Film your friends doing scary things to become SpöökTube famous! (strongly advised to not go alone)
Outpost: Infinity Siege
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.
SCP: Blackout
A VR/Desktop game where you are a new D-Class personnel in secret SCP Research Site-50 when everything falls apart. Use what you can find as you explore the facility, access logs to learn about the SCP entities in containment, and run for your life from the SCP entities that have escaped.