Aliens Games
Discover 3993 aliens-tagged games on Steam. Find the best games with this tag.
Games with Aliens
Explore 3993 games tagged with aliens
0Beasts of Mystery
Have you ever wondered what it would be like to see Mothman fight the Flatwoods Monster? Well now you can find out in Beasts of Mystery, the cryptid fighting game with hand drawn animation and approachable gameplay inspired by the greatest of fighting games’ past and present.
0Eternal League
Step into a futuristic battleground where every decision shapes your destiny. In Eternal League, you'll embark on an epic journey through a fast-paced roguelike RPG that combines customization, strategic combat, and a unique session-based progression system that rewards your skill and creativity.

Maelstrom: The Battle for Earth Begins Enhanced
Maelstrom takes you to a dark future, onto an Earth ravaged by long-running wars and scarred by natural calamities of unseen magnitude.
0Gutfarm
Gutfarm is a top-down 2D pixel art game that blends farming, tower defense, and survival elements. On this alien island, you will expand and grow your farm by planting crops, unlocking genetically mutated varieties, defending against waves of monster attacks, collecting relics, and more!
0Professor Galaktionov Dawn of the Robopocalypse
Embark on an incredible adventure with the eccentric genius Professor Galaktionov and his voice assistant Sara! You’ll unravel the mysteries of the universe and experience mind-blowing escapades.
0Space Ace
Space Ace is a 2D top-down shooter that focuses on upgrading your ship to fight through levels of Bosses and smaller enemies. Play with keyboard + mouse or Xbox controller.
0Blastermancer
Blastermancer is a crunchy, lo-fi platform arena shooter where you are tasked with obliterating space demons. As you progress you will gain so many upgrades the game will descend into a cacophonous ballet of lasers and pixel dust.

Imposters
Imposters is an exhilarating asymmetrical horror with up to 5 players. The hunter must locate and capture all aliens disguised as elk, and the aliens must abduct him without leaving a trace.
0The SeethingSwarm Collection
A curated anthology of classic Flash games by SeethingSwarm. Play 25+ games from the golden age of the web — preserved just as they were, with fullscreen support (F11) — all launched through a console-style retro menu.
0Shattered Steel
Save your species as you engage in fast-paced mechanized combat in the single-player campaign containing 50 adrenaline-pounding missions and arm your Planet Runner with blazing firepower - over 25 armaments, including gatling guns, guided missiles, fuel-air mortars and plasma cannons.
0SPYHACK: Episode 1
SpyHack is a tactical action game where you play as male or female ATD Agent stealthily sneaking past guards or dispatching them with various weapons. Walk your way through the levels, hack various devices and terminals to reveal rooms. Get rid of guards and take control over hacked contraptions.
0RoboWorlD tactics
Feel yourself the creator of artificial intelligence and see how the colony of robots behave!
0Cosmic Ray
A game about exploring space in search of hospitable planets for colonization. Casual gameplay and short rounds make it a great option for killing a few minutes.
0Zack Y
Zack Y is a 2D Old School Scifi themed platform action game based on the story of the Alien called Zack Y whose mission is to rule over the Earth.
0Infectra
Ifectra is a strategy game set in 2124 on the distant planet Emevera III, ruled by the Maxploit Corporation, where an epidemic of a yet unknown virus broke out. Your goal as the corporation security commander is to evacuate as many healthy people as possible and to eliminate infected individuals.
0Airstrife: Assault of the Aviators
Use Aileron Rolling or Evading your enemies' attacks while having a realistic damage system. Use different planes with upgradable parts and numerous weapons you can mount to your planes to destroy your enemies. Fly solo or play with your friends and enjoy local coop. A modern re-invented classic.
0Infected spaceship generator
Generator of random mazes with a search for objects, ammunition and weapons. Random placement of enemies such as zombies and mutants, including minibosses. Each new game will be unique.
0Madness Beverage
Travel through the galaxy and beat space demons to a bloody pulp in this intense first-person boomer shooter! Use a variety of weapons and powerful drinks created for one purpose only – to bring destruction and lots of blood.
0UFO vs Bikini
Act as an alien driving a UFO and collect materials to upgrade the spacecraft. Kidnap bikini girls, extract purple energy, and study the function of purple energy. Avoid human attacks, strengthen the defense of spacecraft and alien technology.
0Asteroid Five
A first person space exploration game where you investigate the inner caves of an asteroid passing by your planet. Dive into the deeps of the asteroid aboard your ship, collecting information and samples of many beautiful minerals and lifeforms while searching for more complex and intelligent beings