Best 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, lists of the most played, top deals and best free aliens games are available at the bottom of the page.
Filters & Lists
X-Morph: Defense
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
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.
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.
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!
Prey
In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.
Alien Swarm: Reactive Drop
Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.
Halo Wars: Definitive Edition
Halo Wars: Definitive Edition is an enhanced version of the real-time strategy classic, Halo Wars, updated to run natively on PC. Halo Wars: Definitive Edition includes improved graphics, new achievements and all of the DLC created for the landmark real-time strategy game.
Turok 2: Seeds of Evil
Having defeated the Campaigner, Turok throws the Chronocepter into a waiting volcano to destroy it. Unfortunately the blast awakens an even deadlier force - The Primagen. Once again a Turok is tasked with restoring peace to the land and stopping the Primagen from merging Earth with the nether world.
Codex of Victory
In this sci-fi turn-based strategy with real-time base-building elements, you’ll be defending human territories against the transhuman Augments. Expand your HQ, and manufacture and upgrade an army of advanced drones to wage interplanetary war for Humanity!
Cosmic Express
Plan the train route for the universe's most awkward space colony!
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!
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.
Duke Nukem 3D: 20th Anniversary World Tour
Frag like it’s 1996 – this time with even more asses to kick! Join the world’s greatest action hero in Duke Nukem 3D: 20th Anniversary World Tour as he saves Earth once again, kicking alien ass and saving babes across the globe along the way.
Half-Life: A Place in the West
In a devastated America, sinister commandos are kidnapping children and taking them to a hidden city with a mysterious cosmic tower at its heart – a tower that may prove to be humanity’s salvation, or its doom. Join three survivors in this fan-made comic as they attempt to unlock the city’s secrets.
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.
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?
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
EARTH DEFENSE FORCE 4.1 The Shadow of New Despair
It's a fight for the future of the planet between the Ravagers, a merciless swarm of alien invaders, and the Earth Defense Force (EDF) in this third-person shooter.Play as four different classes in over 80 missions with a range of 800 weapons at your disposal.Co-op play supported.
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.
Fortified
Fortified is an explosive strategy shooter where players will defend the Earth against a menacing Martian invasion in the 1950s. Play as one-of-four pulp inspired heroes as they fight swarms of terrifying robots with an arsenal of Cold War era weapons and experimental technology.
Bit Blaster XL
Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down—boost, dodge, shoot, and chase high scores in this addictive, old-school action game!
The Deadly Tower of Monsters
Fire up your ray guns, crystal swords, and laser whips, and get ready for thrills and chills! With three incredible movie stars playing out decidedly B-level sci-fi exploits, Dick Starspeed, Scarlet Nova, and Robot will have you ready to jump off the side of the tower—right into adventure!
Shooting Stars!
This game is the answer to one of the most important questions in life: “I can haz lazer kitty?“ Yes you can!Most played aliens games on Steam
Take a look at the top aliens games that are currently attracting the largest player bases on the Steam platform, as of April 19th 2025.
1. Alien: Isolation
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger. Alien: Isolation is a horror, survival horror and sci-fi game developed by Creative Assembly and Feral Interactive (Linux) and published by Feral interactive (Mac), Feral Interactive (Linux) and SEGA. Released on October 06th 2014 has received 60,046 reviews of which 55,969 were positive and 4,077 were negative resulting in an impressive rating of 9.2 out of 10. The game has hit the top spot as the #1 most played aliens game, thanks to its 239 peak concurrent players over the last day.
9.2
55,969
4,077
239
players
2. Galactic Civilizations III
Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more. Galactic Civilizations III is a aliens, sci-fi and 4x game developed and published by Stardock Entertainment. Released on May 14th 2015 has received 10,270 reviews of which 7,867 were positive and 2,403 were negative resulting in a rating of 7.5 out of 10. While seeing 191 players online at once in the last 24 hours, this game is currently ranked #2 among aliens games based on player count.
7.5
7,867
2,403
191
players
3. Aliens: Fireteam Elite
Aliens: Fireteam Elite is a cooperative third-person survival game set in the iconic Alien Universe. Battle through hordes of different types of Xenomorph, customize your character and gear, and level-up as you try to contain this ever-growing threat. Aliens: Fireteam Elite is a co-op, shooter and aliens game developed by Cold Iron Studios and published by Cold Iron Studios and Focus Entertainment. Released on August 23rd 2021 has received 24,049 reviews of which 19,214 were positive and 4,835 were negative resulting in a rating of 7.9 out of 10. While seeing 186 players online at once in the last 24 hours, this game is currently ranked #3 among aliens games based on player count.
7.9
19,214
4,835
186
players
4. Crysis 3 Remastered
Experience the single-player experience from the iconic first-person shooter, Crysis 3, optimized to take advantage of today's hardware in Crysis 3 Remastered. Crysis 3 Remastered is a action, fps and shooter game developed by Crytek and Saber Interactive and published by Crytek. Released on November 17th 2022 has received 5,440 reviews of which 4,802 were positive and 638 were negative resulting in a rating of 8.5 out of 10. With 110 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played aliens games.
8.5
4,802
638
110
players
5. EARTH DEFENSE FORCE 4.1 The Shadow of New Despair
It's a fight for the future of the planet between the Ravagers, a merciless swarm of alien invaders, and the Earth Defense Force (EDF) in this third-person shooter.Play as four different classes in over 80 missions with a range of 800 weapons at your disposal.Co-op play supported. EARTH DEFENSE FORCE 4.1 The Shadow of New Despair is a action, third-person shooter and co-op game developed by SANDLOT and published by D3PUBLISHER. Released on July 18th 2016 has received 9,987 reviews of which 9,488 were positive and 499 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #5 spot among the most played aliens games.
9.2
9,488
499
89
players
6. Aliens vs. Predator™
Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay. Aliens vs. Predator™ is a action, fps and aliens game developed by Rebellion and published by SEGA. Released on February 16th 2010 has received 19,673 reviews of which 17,899 were positive and 1,774 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #6 spot among the most played aliens games.
8.9
17,899
1,774
77
players
7. Gatekeeper
Gatekeeper is a fast-paced rogue-like. Go on a quest to find the stolen Heart of the Universe and shoot your way through the hordes of machine enemies guarding the planetary gates. Play solo or in 4 people co-op and become the next Guardian! Gatekeeper is a early access, online co-op and action roguelike game developed by Gravity Lagoon and published by HypeTrain Digital. Released on May 13th 2024 has received 1,585 reviews of which 1,352 were positive and 233 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #7 spot among the most played aliens games.
8.2
1,352
233
66
players
8. X-COM: UFO Defense
You are in control of X-COM: an organization formed by the world's governments to fight the ever-increasing alien menace. X-COM: UFO Defense is a strategy, classic and turn-based strategy game developed by MicroProse Software and Inc and published by 2K. Released on September 04th 2008 has received 3,767 reviews of which 3,571 were positive and 196 were negative resulting in an impressive rating of 9.1 out of 10. The game currently holds the #8 spot among the most played aliens games.
9.1
3,571
196
45
players
9. Duke Nukem Forever
The King arrives with an arsenal of over-the-top weapons, giant explosions and pure unadulterated fun! Duke Nukem Forever is a fps and action game developed by Gearbox Software and published by 2K. Released on June 09th 2011 has received 10,897 reviews of which 7,517 were positive and 3,380 were negative resulting in a rating of 6.8 out of 10. The game currently holds the #9 spot among the most played aliens games.
6.8
7,517
3,380
34
players
10. Aliens: Colonial Marines Collection
You & your friends are the deadliest killers in the galaxy – the US Colonial Marines. It’s up to you to not just survive, but wipe out the Xeno infestation. Aliens: Colonial Marines Collection is a action, fps and aliens game developed by Gearbox Software and published by SEGA. Released on May 01st 2012 has received 11,437 reviews of which 6,965 were positive and 4,472 were negative resulting in a rating of 6.0 out of 10. The game currently holds the #10 spot among the most played aliens games.
6.0
6,965
4,472
32
players
Best deals on aliens games on Steam
Discover fantastic savings with the best discounts on a variety of aliens games available on Steam right now, updated on April 19th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted aliens games.
1. Destroy All Humans!
The cult-classic returns! Terrorize the people of 1950's Earth in the role of the evil alien Crypto-137. Harvest their DNA and bring down the US government in the faithful remake of the legendary alien invasion action adventure. Annihilate puny humans using an assortment of alien weaponry and psychic abilities. Destroy All Humans! is a action, adventure and villain protagonist game developed by Black Forest Games and Pandemic Studios and published by THQ Nordic. Released on July 28th 2020 has received 10,783 reviews of which 9,960 were positive and 823 were negative resulting in a rating of 9.0 out of 10. Featuring a massive 90% discount, this game currently holds the #1 spot in the best deals for aliens category.
9.0
9,960
823
-90%
30.90€
3.09€
2. Alien Breed 2: Assault
Can you survive the alien onslaught? Gamers across the world will now have a chance to play the next chapter in this high-budget, high-quality series. Alien Breed 2: Assault is a action, shooter and aliens game developed and published by Team17 Digital Ltd. Released on September 22nd 2010 has received 1,002 reviews of which 698 were positive and 304 were negative resulting in a rating of 6.7 out of 10. Thanks to its incredible 90% discount, this game is now the #2 best deal in aliens games.
6.7
698
304
-90%
9.99€
0.99€
3. Alien Breed 3: Descent
Experience the final explosive chapter in the Alien Breed series and uncover the horrifying truth surrounding the existence of the Breed. Launch discount good thru Nov. 24 10am PST. Alien Breed 3: Descent is a action, shooter and isometric game developed and published by Team17 Digital Ltd. Released on November 17th 2010 has received 573 reviews of which 427 were positive and 146 were negative resulting in a rating of 7.1 out of 10. Thanks to its incredible 88% discount, this game is now the #3 best deal in aliens games.
7.1
427
146
-88%
10.00€
1.20€
4. Alien: Isolation
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger. Alien: Isolation is a horror, survival horror and sci-fi game developed by Creative Assembly and Feral Interactive (Linux) and published by Feral interactive (Mac), Feral Interactive (Linux) and SEGA. Released on October 06th 2014 has received 60,046 reviews of which 55,969 were positive and 4,077 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 87% discount, this title has earned the #4 position in the best deals for aliens games.
9.2
55,969
4,077
-87%
40.77€
5.30€
5. Shadowgrounds
Shadowgrounds breathes fresh air into the action genre with explosive combat sequences, an innovative weapon upgrade system, and an intriguing storyline. The adrenaline-pumping, top-down gameplay and audiovisual fireworks set the scene for this new action experience which also includes single computer (split keyboard or joystick) co-op... Shadowgrounds is a top-down shooter, sci-fi and aliens game developed and published by Frozenbyte. Released on May 08th 2006 has received 1,555 reviews of which 1,266 were positive and 289 were negative resulting in a rating of 7.8 out of 10. Currently offered at a significant 80% discount, this title has earned the #5 position in the best deals for aliens games.
7.8
1,266
289
-80%
5.00€
1.00€
6. EARTH DEFENSE FORCE 4.1 The Shadow of New Despair
It's a fight for the future of the planet between the Ravagers, a merciless swarm of alien invaders, and the Earth Defense Force (EDF) in this third-person shooter.Play as four different classes in over 80 missions with a range of 800 weapons at your disposal.Co-op play supported. EARTH DEFENSE FORCE 4.1 The Shadow of New Despair is a action, third-person shooter and co-op game developed by SANDLOT and published by D3PUBLISHER. Released on July 18th 2016 has received 9,987 reviews of which 9,488 were positive and 499 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 73% discount, this title has earned the #6 position in the best deals for aliens games.
9.2
9,488
499
-73%
16.52€
4.46€
7. Gatekeeper
Gatekeeper is a fast-paced rogue-like. Go on a quest to find the stolen Heart of the Universe and shoot your way through the hordes of machine enemies guarding the planetary gates. Play solo or in 4 people co-op and become the next Guardian! Gatekeeper is a early access, online co-op and action roguelike game developed by Gravity Lagoon and published by HypeTrain Digital. Released on May 13th 2024 has received 1,585 reviews of which 1,352 were positive and 233 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 58% discount, this title has earned the #7 position in the best deals for aliens games.
8.2
1,352
233
-58%
15.02€
6.31€
8. Aliens versus Predator Classic 2000
Aliens Versus Predator Classic 2000 features the Colonial Marine, Alien and Predator Campaigns and the frenetic single-player Skirmish mode from the original title: Alien Versus Predator Gold Edition, which was released to massive acclaim in 2000. Aliens versus Predator Classic 2000 is a fps, classic and action game developed and published by Rebellion. Released on January 15th 2010 has received 2,616 reviews of which 2,294 were positive and 322 were negative resulting in a rating of 8.4 out of 10. Currently offered at a 47% discount, this title has earned the #8 position in the best deals for aliens games.
8.4
2,294
322
-47%
5.02€
2.66€
9. Chenso Club
Aliens are attacking! Who will save us? Chenso Club will! Using chainsaws, hammers, and the aliens’ own life force against them - these fearless warriors will pulverise enemies on their way to victory. Go solo! Go co-op! Go hack those aliens in this action-packed, side-scrolling platform brawler! Chenso Club is a aliens, co-op and action roguelike game developed by Pixadome and published by Aurora Punks. Released on September 01st 2022 has received 311 reviews of which 234 were positive and 77 were negative resulting in a rating of 7.1 out of 10. Currently offered at a 41% discount, this title has earned the #9 position in the best deals for aliens games.
7.1
234
77
-41%
16.92€
9.98€
Free aliens games on Steam
Check out this fantastic list of free-to-play aliens games you can enjoy on Steam right now, updated on April 19th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play aliens games.
1. 100 Aliens Cats
👽🛸 100 Aliens Cats - 🐾 Join the cutest adventure in the Aliens themed locations full of cats! Explore the charming hand-drawn artwork of aliens places and Cats as you embark on a quest to find 100 adorable cats hidden throughout the game. 🕵️♂️❌ Can you find them all? 🕵️♂️🐈✅ 100 Aliens Cats is a free to play, cats and aliens game developed by 100 Cozy Games and Cats and published by 100 Cozy Games. Released on June 09th 2024 has received 1,579 reviews of which 1,505 were positive and 74 were negative resulting in an impressive rating of 9.0 out of 10. The game currently holds the #1 spot among the most played free aliens games on Steam.
9.0
1,505
74
9
players
2. Void Whispers
Assume the role of a broadcast engineer in a tranquil city. All seems peaceful until the sky above starts to reveal something deeply unsettling. Void Whispers is a free to play, horror and psychological horror game developed and published by Eduardo Scarpato. Released on April 06th 2024 has received 364 reviews of which 339 were positive and 25 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #2 spot among the most played free aliens games on Steam.
8.6
339
25
1
players
3. Alien Removal Division
The invasion has started and the secret military research facility has fallen leaving only chaos. As the only survivor, you must fight your way through the military base against a horde of frantic aliens. A.R.D. is a FREE single-player first-person shooter made by students from Breda University. Alien Removal Division is a parkour, fps and action game developed by Enchanted Bean Studios and published by Breda University of Applied Sciences. Released on June 17th 2022 has received 1,056 reviews of which 932 were positive and 124 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #3 spot among the most played free aliens games on Steam.
8.4
932
124