Aliens Games
Discover 3999 aliens-tagged games on Steam. Find the best games with this tag.
Games with Aliens
Explore 3999 games tagged with aliens
0Aegis Descent
In this fast-paced roguelite vehicle shooter, WW2 is ending, and a secret testing facility is overrun by an unknown alien force. The best pilots of the war are asked to take an experimental hover tank on a perilous mission - To descend into the caverns below the facility and face this new threat.
0Buster's TD
A fun physics-based tower defense game where you build your own base and maze. Featuring a very cute dog named Buster and his evil twin named busteR.
0Beyond the Storm
Be NEARLY vaporized, crushed, blown to pieces, flame broiled, and electrocuted using your incredible targeting skills and class 1 fancy flying to keep you alive in this SHMUP that brings back the essence of the classic arcade shmups!
0NANOCELLS - Mission: Back Home
A shooter full of action and stealth eliminations, set in the year 2086. As Alícia you have an ultra technological suit, primary and secondary weapons, skills and special movements to kick out the invaders!
0Devil's Island
In this horror zombie survival game, set in a post-apocalyptic taiga forest, players must grapple with nature while managing hunger, thirst, health, and resources. They can collect mushrooms, craft items and weapons, cook raw meat, and battle various enemies.

Ancient Aliens: The Game
What if aliens helped create Earth’s ancient civilizations? Play as a reluctant alien-human hybrid in this story-driven city building game! Manage resources, manipulate primitive humans, and help promote scientific discovery as you build the colossal pyramids—to uncover the secrets that lie within!
0Myasoid
Myasoid - This is an arena shooter about a huge worm that protects this planet from the invasion of dangerous alien ships.
0Quadroids
Quadroids is a single-player puzzle platformer with a twist! Don’t be fooled by its simple pixel-art style and put your neocortex to the test while you try to control 4 screens by yourself and clear 100+ mind-twisting levels!
0Hamboy : AutoChess Survivor
Hamboy is a rogue-like arena shooting game where you fight against aliens by strategically combining 12 attributes and 10 types of weapons to create synergies. As the waves increase, you'll realize that you shouldn't spend gold recklessly.
0Defend Earth: Xenos Survivors - Prelude
You are Earth's last line of defense in a relentless alien invasion. Experience intense 3D top-down roguelite action. Outsmart, outgun and survive smarter, increasingly menacing foes with a versatile arsenal in diverse landscapes. Every run escalates the challenge - adapt, evolve, dominate!
0Hans
Step into Hans, a visual novel set during World War I, and play as an alien who bakes magical pastries to help the residents of a small town.
0Love at The Milky Way Diner
An inclusive, cozy, sci-fi cooking/dating sim about making friends, finding love, and running a diner in deep space.
0Outpost 3
this is a mining , got resources to upgrade device and weapons game,monsters will appear and defence your mecha . player landed on different planets,them can collect diffient ore and upgrade weapons,find mining device and relics to make every round special . move character and mining ore
0OMEGA 6 The Triangle Stars
OMEGA 6 The Triangle Stars is an adventure game with 16-bit styling, based on the manga by former Nintendo art director, Takaya Imamura.
0NEURO
NEURO is a narrative first-person shooter in a cyberpunk setting. The action is taking place in the future, in the 4th century of the Space Era, which starts after humans invent a hyperspace engine.
0OROBOROS
OROBOROS is an arcade-action game where, as you fight to complete your cycle, enemies and adventure are dragged onto you; packed with explosions, bursting with excitement, and loaded with challenge. Eating your own tail has never been this hard.
0Where Are My Friends?
Hardcore experimental game. All levels represent different game genres. Side by side with a cute protagonist, complete different trials to save your friends and the whole planet!
0ORE
ORE is a couch-cooperative twin stick shooter where you and up to three friends must fight through a handful of levels and navigate the planet's varied, alien surface to collect as much ORE as possible before the planet implodes. Defeat the planet’s corrupted Core Wurm, save the planet, and get rich before time runs out!
0Absolute Territory
Fly futuristic starfighters with intense dogfights against slow warships and nimble enemy fighters. Choose your ship, customize loadouts with various guns and missiles. Use first-person cockpit or third person. Use power settings across engines, shields, and engines to gain the advantage in combat.
0Unknown Planet
Your spacecraft has crash landed on an alien planet. Explore this unknown world, mine the resources, build your base, grow farms, craft equipment, fight off the alien lifeforms and survive.