Hidden Aliens 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 aliens games. For those who prefer not to search, check out lists of the most played, top deals and best free to play Aliens games on Steam.

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Protocol By signing below, you agree to follow the Protocol. Protocol is a program of strict rules created to make first contact with an alien life form that got shot down in the Arctic Circle.

Price 8.79€
Rating 6.9
Release 20 Nov 2018
Protolife Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.

Price 11.99€
Rating 8.0
Release 15 Jun 2018
Quarantine Circular In the middle of a world-ending pandemic, a group of scientists discover the galaxy has been watching. From the award-winning team behind Thomas Was Alone and Subsurface Circular, Quarantine Circular is the next mutation in text-based adventure.

Price 5.99€
Rating 8.2
Release 22 May 2018
Signal Simulator Game inspired by SETI. Take the role of a scientist to find an extraterrestrial signal .Control massive Radio Antennas by using interactive control in your Observatory. Detect , download and decode unknown or story telling signals. Manage and Maintain an electrical system to improve your systems and make it more efficient.

Price 16.00€
Rating 7.7
Release 29 Apr 2018
Attack of the Earthlings Take on Galactoil, a comically dysfunctional intergalactic energy corporation, and its larger-than-life employees in a tactical-stealth game that fuses satisfying strategic gameplay and dark comedy in a quirky single-player story.

Price -94% 0.81€
Rating 7.9
Release 08 Feb 2018
Swarm Queen Swarm Queen is a quick-to-learn but tactical and challenging tug-of-war strategy game about insectoid aliens trying to murder each other.

Price 6.49€
Rating 8.5
Release 19 Dec 2017
The Land of Pain The Land of Pain is a Lovecraftian horror adventure. After something strange appears in the woods, you'll have to learn how to survive as you fend off a dark and disturbing evil. Flee from an unrelenting enemy, solve puzzles, and unravel the ancient mystery that's befallen this land.

Price -80% 2.39€
Rating 7.2
Release 13 Sep 2017
Arcade Mayhem Juanito Arcade Mayhem Juanito is a retro experience about arcade-hopping. Teleport into different video games, play with unique mechanics inspired by well-known arcade games, face stunningly animated bosses and join the fight against the clonocell invasion.

Price 9.99€
Rating 8.7
Release 03 Aug 2017
Solstice Chronicles: MIA In this 2-player twin-stick shooter, use a friendly drone for a game-changing abilities. Survive waves, upgrade, and uncover the mystery in this cooperative, action-packed experience.

Price -92% 1.04€
Rating 7.0
Release 26 Jul 2017
Tormentor❌Punisher Everything in Tormentor❌Punisher can be killed in one hit, from bosses to yourself. Bosses conjure traps to make the arena hellish. Demons adjust to your play style and punish you. Perform combos on enemies and gain cool upgrades. Reload your machine gun by firing your shotgun. Let's do this!

Price -70% 2.39€
Rating 8.3
Release 02 Jun 2017
Cosmic Express Plan the train route for the universe's most awkward space colony!

Price -98% 0.33€
Rating 8.6
Release 16 Mar 2017
Alien Shooter TD Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!

Price -93% 0.70€
Rating 8.1
Release 13 Jan 2017
8-Bit Invaders! 8-Bit Invaders! is a fast-paced, retro Real-Time Strategy game for the PC. Control the military might of the Galactic Marine Corps or Invade with the devastating power of the Cranioids! Mine, Build, and Fight your way to victory! Conquering the Multiverse was never so easy.

Price -86% 2.18€
Rating 7.8
Release 16 Dec 2016
Diaries of a Spaceport Janitor Diaries of a Spaceport Janitor is an anti-adventure game about picking up trash in an alien bazaar. Play as the Janitor, an Alaensee girlbeast with a municipally-subsidized trash incineration job and dreams of leaving the planet of Xabran's Rock far behind her.

Price -94% 0.64€
Rating 7.0
Release 16 Sep 2016
The Hive The Hive is a strategy game with RPG elements where you assume command as the insectoid hivemind. Build and expand your underground colony, harvest resources, and evolve your swarm using DNA. Will you survive in this hostile yet beautiful underworld?

Price -99% 0.26€
Rating 6.8
Release 25 Aug 2016
Just Deserts Just Deserts is a sci-fi action dating sim where you play as a soldier who must protect a city from mysterious alien attack, while at the same time you will also be seeking to capture the heart of your dream girl(s)! Theme song by Vesuvia [Ecky], vocal track by iMochi

Price -87% 1.33€
Rating 6.9
Release 25 Jul 2016
Polaris Sector Can anyone build an empire in a place like this? Other factions are naturally suspicious of newcomers and may wage war at the first sign of unidentified craft. Here, a natural death is an uncommon luxury.

Price 38.99€
Rating 6.8
Release 22 Mar 2016
Shooting Stars! This game is the answer to one of the most important questions in life: “I can haz lazer kitty?“ Yes you can!

Price -94% 0.32€
Rating 7.8
Release 19 Jan 2016
Swordbreaker The Game The Swordbreaker game is interactive fiction with lots of illustrations where you and you alone get to choose the storyline and the ending!

Price -85% 0.76€
Rating 7.8
Release 06 Nov 2015
Weapon of Choice DX Weapon of Choice is a high-energy, side-scroller in which each playable character is unique with their own special weapon and abilities! Blast insane aliens, find new player characters, and choose between branching paths!

Price 5.89€
Rating 7.3
Release 23 Sep 2015
Outcast 1.1 Outcast 1.1 is an enhanced version of the critically acclaimed action-adventure game developed in 1999 by Appeal for the PC.

Price -91% 0.52€
Rating 8.3
Release 18 Dec 2014
Warhammer 40,000: Armageddon In this hex-based, turn-based strategy game, players will lead the Imperial forces of the Armageddon Steel Legion and Space Marines from a variety of Chapters against the Ork invasion through over 30 scenarios, on the hostile terrain of the planet and its gigantic Hive Cities.

Price -19% 3.24€
Rating 7.8
Release 26 Nov 2014
The Last Federation From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.

Price -96% 0.89€
Rating 7.1
Release 18 Apr 2014
Signs of Life Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, Mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.

Price 9.75€
Rating 7.3
Release 27 Jan 2014