Best Sci-fi Steam Games on Sale
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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TerraTech Legion
TerraTech Legion, a chaotic Bullet Heaven Builder. Build the ultimate battle vehicle block by block and survive waves of robotic foes, ramming them at speed and shooting infinite projectiles.
Far Far West
Yee-haw, Cowboys! Team up in this chaotic 1-4 player co-op shooter. Journey to the Far Far West to blast monsters, sling spells, complete missions, and collect bounties. Work as a team to get in, get paid and get out (mostly) alive.
Ground Zero
Fight through post-apocalyptic South Korea in this retro survival horror. Uncover the truth behind the devastating meteor impact that left the country in ruins and turned every living organism into a terrifying monstrosity. Fight. Solve puzzles. Upgrade gear. Make every bullet count.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Hail to the Rainbow
The story of a lonely young man named Ignat, who survives in the dangerous and gloomy world of post-apocalyptic cyberpunk. You have to face the trials of a new reality and plunge into the secrets of the surrounding chaos.
A.I.L.A
A.I.L.A is a first-person horror game set in a near-future filled with immersive technology. Play as the sole game tester for a revolutionary new fictional AI. Survive intense horror experiences that prey on your deepest fears as the lines between virtual and reality begin to blur…
Repel The Rifts
Repel the Rifts is a roguelite tower defense game where you lead a commander through an alien world, uncovering new terrain each wave, drafting powerful upgrades, and constructing defenses to hold back the chaos.
Wall World 2
The adventure in the mysterious world of the Wall continues! Pilot your robospider into its depths, uncover lost artifacts and technologies, upgrade your exosuit and spider, and battle the horrors lurking in the dark. Unravel the mysteries buried in the depths of the Wall!
Goodnight Universe
From the creators of Before Your Eyes — You are Isaac, a 6-month-old baby, developing mysterious psychic powers. What you want most is to be loved and accepted by your family, but a secretive tech corporation wants you for their own.
Star Ores Inc.
Take over an abandoned space station and manage your own ore mine. Cut through the asteroid with your laser, sell ore, and create an automated network of robot helpers to maximize your profit.
The Last Caretaker
Explore a drowned Earth, restore lost systems, and raise the last human seeds in this first-person survival-crafting adventure. Build, scavenge, defend, and launch humanity back to the stars.
ARC Raiders
ARC Raiders is a multiplayer extraction adventure, set in a lethal future earth, ravaged by a mysterious mechanized threat known as ARC.
Mech Havoc
Sandbox of destruction. Billion different ways to build your mech. Feel the weight and impact of obliteration in this modern old school mech combat sim.
GODBREAKERS
Fast, Fluid, Frenetic! Break gods, steal powers, and chain abilities in a hectic combat loop. This 1-4 player co-op action roguelite is built for fast pick-up sessions and endlessly replayable chaos. Experience tough battles and maximum expression where every run feels rewarding!