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.
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REPLACED
Follow Reach, an AI trapped in a human body, as you expose the sinister secrets of Phoenix Corp. Set in an alternate 1980s America, experience a cinematic 2.5D adventure - a dark cyberpunk thriller blending atmospheric exploration with immersive, high-stakes action.
A Planet Full of Cats
A Planet Full of Cats is a hidden object adventure with metroidvania-style exploration in true Devcats fashion. Explore diverse biomes, unlock new powers and uncover ancient secrets!
Solar Expanse - Space Exploration Manager
Explore the Solar System. Mine and drop asteroids. Colonize and terraform. Lead the space race and compete with other corporations on your way to profit. Watch the expansion of human race over the centuries.
Modulus: Factory Automation
Build, automate, & optimize production lines across sky islands with real spatial constraints. Every production line is an open-ended puzzle: which operators to use, how to route your belts and how to fit your factory into the landscape. Your solutions, like your factories, are uniquely your own.
Xenonauts 2
Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.
Aether & Iron
Immerse yourself in this Decopunk Narrative RPG set in an alternate 1930s where anti-gravitational technology has taken cars, roads, and even New York City into the sky. Muster a crew, master tactical turn-based combat, and unravel the dark secrets lurking beneath the floating metropolis.
Stellar Tactics
A Sci-Fi role-playing game featuring turn-based ground combat, space exploration, deep character customization and a massive living universe with thousands of star systems. Equip your ships with the best equipment you can find, gather a powerful crew of mercenaries and set out into the void!
Mega Man Star Force Legacy Collection
The Mega Man Star Force series, which expanded into an anime, is back in the Mega Man Star Force Legacy Collection! This collection includes seven games and additional features like a gallery of illustrations and music! Online play is also supported!
Heroes of Science and Fiction
A turn-based sci-fi strategy that combines exploration and exciting clashes on the battlefield. Take control over several different species, raise powerful armies for your heroes and destroy your opponents! This HoMM-like is set in a scifi universe, with new mechanics on top of the classic formula.
Net.Attack() - Code or Die!
CODE OR DIE! Hack enemy systems & survive the security response by engineering lethal bullet-heaven algorithms. Your brain power determines your firepower across 190+ programming nodes. Debug your failures. Optimize your code. Complete the heist. HACK THE PLANET!
John Carpenter's Toxic Commando
Pick a character and team up with three friends ‘cause it’s time to save the world. Experience intense FPS action as you obliterate hordes of terrifying monsters! You may not be on the best team of mercenaries, but you are… a Toxic Commando!
Blossom: The Seed of Life
Terraform a dead planet back to life in this open world survival crafting game. Explore ruins, gather resources, print machines, drive modular vehicles, grow forests, biomes, and ecosystems. Create life and make it thrive with your own hands.
AETHUS
Explore a vast underground world to mine and craft hundreds of items while building up your modular Outpost on the surface, to prospect for gems, refine resources and farm hydroponic crops in this top-down sci-fi survival-crafter where the story always provides a reason to dig deeper.
Planet of Lana II
As greed and power divide the tribes of their home planet, Lana and her little companion, Mui, must stand together against the forces reshaping their world – struggling not just for survival, but for the soul of their home.
Desynced
Desynced is a sci-fi strategy game with fully customizable units and behaviors. Gather, build, research, and explore the unknown. Alone or with friends, unveil the mystery of an AI on the edge of self-awareness and uncover the hidden truth in this blend of strategy, automation, and exploration.
MeteoriteFall
Let's use existence and freedom as stakes, block everything, and explore the ancient legends of the Fallen Star Village, digging out the truth buried in the long river of history.
Star Trek: Voyager - Across the Unknown
Star Trek: Voyager - Across the Unknown is a story-driven survival strategy game in which the fate of the iconic starship is in your hands. Take the helm, manage the ship and resources, and make difficult decisions. Will you be able to bring home the ship and its crew?
High On Life 2
An intergalactic conspiracy threatens the fate of humanity! Team up with a wide cast of talking alien guns as you shoot, stab, and skate your way through the exotic locales to take down the bad guys and save your favorite species (humans)!
Roadside Research
Roadside Research is a 1 to 4 player co-op gas station simulator. Except you’re aliens. And undercover. Do very human things like restocking shelves while preparing for the invasion. Just don’t get caught.
ROMEO IS A DEAD MAN
Paint the screen red and travel the cosmos in this bloodstained action adventure game! Witness the latest from Grasshopper Manufacture: the advent of ULTRA-VIOLENT SCIENCE FICTION!
MENACE
Lead a strike force against an alien threat in this turn-based tactical RPG from the developers of Battle Brothers. Answer distress calls across different worlds, train and equip infantry, deploy tanks and mechs, and plan and execute missions in detailed turn-based battles.
Nonentity Galaxy
Fight, Scavenge, Survive, and File Your Taxes. A grim yet hilarious space strategy roguelite where you must balance hull integrity against your company's relentless profit margins. Warning: Contains lethal doses of dark humor and corporate exploitation.
The Last Starship
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!
Calyx
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
R.I.P. - Reincarnation Insurance Program
Welcome to the Reincarnation Insurance Program! This top-down roguelite shooter blends Diablo-style looting with Survivor-like mayhem. Face screen-filling zombie tides, use Divine Tech to liquidate them into ash, and farm god-tier gear to forge your OP build.
The Gold River Project
The Gold River Project™ is a camping trip gone wrong in the Pacific Northwest. Explore, craft, build, and survive in this open-world experiment that traps you and up to 4 friends in this single player or co-op survival adventure game.
Out of Action
A fast-paced PvP FPS built around skill-based movement and deep build crafting, with cinematic, high-intensity combat set in a brutal cyberpunk world inspired by 90s anime.
MIO: Memories in Orbit
Play as android MIO in this mesmerizing metroidvania where you explore the Vessel, an enormous technological ark overgrown with machines gone rogue. Uncover its secrets, enhance MIO's abilities, and save the spaceship and its residents from oblivion.
Factory Planner
Factory Planner is a card-based simulation/strategy game that lets you build a factory using cards. The main goal of the game is to make combinations with different cards so that each player can build different factories and feel the sandbox experience to the fullest.
Solargene
Take Command of a Space Corporation in the Sci-Fi Simulator Solargene! Manage personnel, design and develop colonies and orbital stations across the solar system! Mine resources, establish logistics, research cutting-edge technologies, trade, and complete missions
The Legend of Heroes: Trails beyond the Horizon
The future of an entire continent is at stake in this milestone entry in the Trails series! Explore the vast Calvard Republic with three different protagonists, nurture connections, and master powerful skills in both real-time and turn-based battles as you uncover the secrets at the core of Zemuria!
One Turn Kill
One Turn Kill is a PvE card game where card drawing and deck control are the keys to victory. Engage in battles limited to a single turn for an exhilarating, suspenseful experience.Join the protagonist in a pixel art wasteland to face off with the strongest of enemies and see what story awaits.
Feed the Reactor
An incremental unfolding game about feeding fuel into a reactor. Combine elements to produce energy, unlock exotic technologies and explore a strange galaxy.
StarRupture
StarRupture is a first-person open world base-building game with advanced combat and tons of exploration. Play alone or in a group on this sublime and ever-changing planet, extract and manage resources, create your complex industrial system and fight off hordes of alien monsters.