Hidden Sci-fi Games on Steam
Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated sci-fi games. For those who prefer not to search, check out lists of the most played, top deals and best free to play Sci-fi games on Steam.
Filters & Lists
Alien: Rogue Incursion Evolved Edition
A new action-horror story set in the iconic Alien universe. Play as rogue Colonial Marine Zula Hendricks, sent to investigate a blacksite on Purdan. Fight and survive using your skill, reflexes, and determination against a deadly Xenomorph incursion in this gripping first chapter of a two-part saga.
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part III
"Touhou Makuka Sai ~ Fantastic Danmaku Festival Part III" is a bullet hell shooting game with a distinctive, glamorous presentation style. It is the third game in the Touhou Makuka Sai series. The strange moon seems to hide a new conspiracy. Charge into the deep world on the eternal night!
Moros Protocol
Face the darkness in Moros Protocol, a pixel-painted sci-fi FPS roguelite where every battle is for survival. Stranded on a decaying warship, stalked by horrors, and guided by a voice you don't recognize, you must adapt, upgrade and push forward. You may be outnumbered, but you are not outmatched.
Star Fire: Eternal Cycle
Star Fire is a love letter to classic arcade side-scrollers, reimagined with roguelite progression, modern action polish, and that “just one more run” itch. It’s fast, punchy, and all about no-pressure fun with tight combat, slick movement, and endless ways to cause chaos.
SHUTEN ORDER
"168 remaining until the end of the world..." Humanity is approaching its end. A sudden dismemberment murder of the leader of a religious nation that advocates an apocalyptic ideology... Five adventure games are combined into one, centered around a suspenseful story full of mystery and intrigue.
Kemono Teatime
Relax in the world of Kemono Teatime, where animal ears are a normal part of everyday life. Here in Melodius, you can whip up whatever blends of tea you desire in your favorite cafe as you play through an adorable story. Come now and live out your bestest and cutest life—down to the last drop.
METAL EDEN
An adrenaline-rush sci-fi FPS. A HYPER UNIT ASKA is sent on a suicide mission to rescue citizens' COREs from MOEBIUS, an orbital city turned into a deadly trap. Dive into cybernetic warfare, face the ENGINEERS, and uncover the secrets of METAL EDEN.
INCISION
All old-school FPS action. No Bullshit. Lots of blood & gore. Slaughter your way through nightmarish industrial mazes, transformed cityscapes and surreal alien structures to cut down the Growth in this ultraviolent, fast-paced, and merciless retro-styled first person shooter.
Stellar Code
Mysterious phenomena from space. A researcher's fatal accident. Cryptic codes engraved on an unknown material. Together with your brilliant sister-in-law, you must unravel a mystery that could determine the fate of Earth. A sci-fi mystery visual novel of discovery and suspense.
Whispers from the Star
Save a stranded astronaut on a mysterious alien planet through real-time AI conversations, where your words are her only lifeline. Guide her through Gaia's dangers and forge an enduring bond in this interactive story with voice-controlled, open-ended dialogue.
Galaxy Idle Clicker
Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe!
ERA ONE
Era One is an innovative space game that combines elements of real-time strategy, base building, space survival, and tactical battles. Players can create and customize their bases from scratch, construct various types of structures and warships, manage fleets, and engage in tactical space battles.
Demon Hunt
Battle through demon-infested lands in this fast-paced rogue-lite bullet-heaven. Pick unique weapons with powerful evolutions, and hunt down ancient demons in intense boss fights. Loot, upgrade, and unlock new ways to grow stronger after every hunt!
No Sleep For Kaname Date - From AI: THE SOMNIUM FILES
Iris has been abducted by aliens?! Finding herself on board a mysterious UFO and tasked with completing a bizarre escape game, Iris knows there's one person who she can always count on for help: Kaname Date, Psyncer!
Every Day We Fight
Caught in a time loop, your band of resistance fighters is humanity’s last hope. Real-time exploration meets turn-based tactics and roguelite strategy as you learn new abilities, seek out new weapons, and develop new techniques to overcome the mysterious alien threat.
Primordialis
Primordialis is a physics-based roguelike fish builder. Unleash your creativity to defeat creatures using venomous tentacles, electrical shocks, or exploding children. The possibilities are endless. Explore the primordial depths to reveal its secrets and discover what lies beyond.
Spirit X Strike
An Action Adventure Game that lets you craft unique COMBOs and explore endless ways to style on your enemies with a high-speed combat system. Test your skills in fun chaotic one-vs-group battles, intense, strategic duels, and exhilarating post-apocalyptic adventure that will set your blood boiling.
Void War
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.
MOBILE SUIT GUNDAM SEED BATTLE DESTINY REMASTERED
Become a pilot in the world of Mobile Suit Gundam SEED, for the first time available with English localization! Engage in thrilling, action-packed Gundam battles, complete missions, and tune up your newly acquired Mobile Suits!
Mutants: Genesis
Mutants: Genesis is an online card game that you can play solo or with up to 3 players in PvE and PvP modes! Join the next generation of Psycogs and climb the ranks to establish yourself as Champion! Collect hundreds of mutants, fashion your own deck, cooperate with or fight other players!
Bioprototype
Bioprototype, a Roguelike & Skill Customizing Rhapsody! This is an auto-bomber with programming elements. Customize your character skills with visual programming, utilize enemy organs to finish the mutation, and construct the ultimate prototype, one can survive in the endless wave of flesh.
Villages & Dungeons
A hardcore roguelite card game where deck-building strategies are at the core of everything! With a vast array of cards, random dungeons, a wealth of encounter events, and diverse enemies, it awaits your exploration and challenge.