Top similar games like Foreign Fortress:
Foreign Fortress $9.99
Escape from the Alien, find necessary items that allow you to escape and cure the virus, and bring hope to humanity, yourself, and your family.
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Exophobia$14.99
Explore and fight your way through a crashed human spaceship infested with relentless hordes of aliens as you become more powerful with exciting weapon upgrades and powerups in this retro inspired first-person shooter.

Greyhill Incident$24.99
This story-driven Survival-Horror game is about a classic Alien-Invasion which takes place during the early 90s. As Ryan Baker, equipped with a baseball bat and a few bullets in his revolver, the story takes you across the atmospheric neighborhood of Greyhill which is invaded by UFOs & Grey Aliens.

Area 19$7.99
A First Person Sci Fi Horror Game. Set within a confidential Underground Facility, Navigate through this Abandoned Complex, Discover Government Experiments, Alien Beings, and the haunting aftermath of the Roswell Crash.

Vugluskr: Zombie Rampage$4.99
Survive a medieval zombie apocalypse in non-linear levels. Collect crystals and keys to uncover the dark story behind a biohazard outbreak, and choose your playstyle wisely to unlock multiple game endings. Can you run, shoot, and outlast the undead horde?

Noxia Somnia$13.99
Face your fears in this chilling 2D survival horror action game about understanding and overcoming mental health struggles. Explore twisted nightmares, engage in challenging fast-paced combat and survive encounters with terrifying stalker enemies.

Prime Directive$9.99
Prime Directive is a first person 3D action-adventure shooter in which players control Marty, a small but brave robot. Marty acquires unique abilities to fight enemies and solve puzzles while exploring a mysterious alien world.

Nano Nebula$14.99
Nano Nebula is a space exploration game for VR. Thousands of years in the future, explore limitless planets as you discover alien life, solve ancient puzzles, and battle hostile creatures.

Relentless Frontier$14.99
Relentless Frontier is a fast paced sci-fi FPS running on the GZDoom Engine, with a strong focus on mobility, strategy, and exploration. Use your Omnistruct to replicate new weapons and abilities to help you traverse the terrain and demolish threats, while escaping from Ross 128-b in one piece.

Float Night$3.99
Float Night is a small sandbox game that is easy to collect resources, simple to build, no craft, and sustainable.

Alien Weapon Test Grounds$1.99
Alien weapons with unique physics await in this fast-paced FPS. Battle waves of enemies across diverse landscapes, lighting, and weather. Beware the unstable space-time continuum.

Gastro Force$6.99
The player takes the role of the last soldier of the highly specialized "Gastro Force", elite troopers trained to infiltrate the enormous alien guts to fight them from the inside!

The Highrise$7.99
THE HIGHRISE is a first-person survival game set in a high-rise building that has been sealed off by an alien monster invasion. Gather resources to make fighting weapons and survival tools. You must find and send a rescue signal at the end of your desperate survival.

Spacepunk Survival$9.99
Spacepunk Survival is a multiplayer, first-person shooter game where you must survive hordes of deadly aliens in a derelict space station, all of that with beautiful and dark retro aesthetics.

Last Floor$9.99
Оne day your life changes dramatically and you become a hostage of your own home. Your task is to survive but to do this you need to get outside.

In.My.Mind$7.99
In.My.Mind is a first-person survival horror: Explore! Solve the Puzzles! Survive! Fight! Run!

Project HunterFREE
Stealth and tactic game that give you the control of an alien that evolves, adquire new abilities and face levels in various ways.

NARGUL - Humans are among us$11.99
Play in VR as a jovial but amnesiac alien. Explore the environment and interact freely with the people. Solve objectives, fight and cross the courses to find the ultimate truth.

SPACEUM$2.99
You're stranded on SPACEUM, a sprawling space base with a deadly alien parasite hiding in the shadows. To escape, you’ll need every ounce of energy you can find. Can you crack the code to freedom, or will you face down the monster that stands in your way? How far will you go to make it out alive?

Return to Planet X$9.99
Return to Planet X is a close combat FPS in which you will have to smash tons of alien bugs.

Starcom: Unknown Space$24.99
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.

Rusty Coffin$7.99
A co-op game about exploring dangerous planets with your teammates, collecting and selling scrap metal to survive from the corporation. Assemble your own robot to help your team in your own way. Never be a “rusty coffin”.

Close Contact$4.99
Close Contact is a narrative-driven, sci-fi horror game where you must navigate an advanced underground base whilst avoiding the alien creature that stalks you.

STORM AREA 51: CUTE ALIEN GIRL EDITION$1.99
Leaked documents suggest that the government is hiding aliens within Area 51 - CUTE GIRL ALIENS. Chads, Virgins, Kyles, and Otakus rise up and decide to raid Area 51 to get an alien girlfriend of their own. This is their story.

Black Mesa$19.99
Relive Half-Life.

Resilience Wave Survival$4.99
Resilience: Wave Survival is a physics based endless wave survival shooter. Explore to Search for Weapons and Ammo to help Defeat the Enemies, better find food and water too if you want to Survive for longer, but Beware of the Tripods stalking the lands.

Let Them Come$7.99
Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.

Subnautica: Below Zero$29.99
Dive into a freezing underwater adventure on an alien planet. Below Zero is set two years after the original Subnautica. Return to Planet 4546B to uncover the truth behind a deadly cover-up. Survive by building habitats, crafting tools, & diving deeper into the world of Subnautica.

Prodeus$24.99
Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware.

Planet Nine$4.99
Control a customizable mech while exploring an alien world in a top down view. Your mission, set by an A.I. is to save the Ninth planet from an alien invasion. Gain levels, find loot and discover the history behind the Ninth Planet.

Level Zero: Extraction$19.99
Tactical extraction shooter meets immersive survival horror. Play as rival mercenaries fighting for loot, or as alien monsters hunting humans from the shadows. Solo or with friends, experience this unique dark take on asymmetrical PvPvE multiplayer.

Edge Of Dead: Under A Uranium Sky$10.99
A bullet hell that let's you pickup and throw the furniture! Throw grenades and activate shields, stun enemies, shoot and dodge enemy fire and set the floor ablaze. Buy a porcupine shotgun from the shop or try a rancid burrito!

Abduction$9.99
Abduction is a singleplayer psychological horror experience. When unexpected visitors arrive in the middle of the night, you must defend your farm in order to take back your land.

Dark Invasion VR: Doomsday$12.99
A terrifying, brutal horror VR shooter adventure with quests, zombies, mutants, and guns! At the onset of the apocalypse, you find yourself inside an old bunker. You must fight your way with full force through the ranks of the undead army of the Dark Invasion to find a way out of that forsaken place

The Future Project$9.99
Take control of an AI soldier, explore planets, and partake in fast paced combat in The Future Project, a first person metroidvania. Explore distinct worlds, obtain new weapons and abilities, and defeat powerful enemies in humanity's quest to journey the stars.

Trash Horror Collection$5.99
Welcome to a true 80's trash horror experience. This collection has 10 short horror games that you can freely choose which one you want to play.

The Indie Game Legend 3D$9.99
Blast vicious aliens, explore their mysterious labyrinth, and rescue indie game makers in this lighthearted NES inspired first-person action adventure!

Distorted world$1.99
Distorted World – is an indie first-person shooter with horror elements. The action in this game takes place in a parallel reality.

Operator8$14.99
An unparalleled alien invasion has overwhelmed the Mining Block Facility on the moon Triton, leaving only death and horror in its wake. You are a mercenary known as Operator8 and you alone have been called in to bring a stop to this fierce attack. Destroy the hive mind at all costs!

Mission Critical : Foresight$11.99
When scientists resumed their Unified Field Theory experiments this time they succeeded- with devastating consequences. You are trapped on a desolate Lunar Base with only your wits, real world astronaut weapons and a heads up display to give you instructions.

Planet Conqueror$1.99
Planet Conqueror is FPS science fiction game where you have to collect minerals exploring different planets. The main goal in the game is to upgrade your gear up to be able to defeat the Alien boss. Each planet generates randomly, making the possibility to explore 10 000+ different planets!

CANINE$2.99
PSX style horror game about a boy looking for his dog, kidnapped by an evil corporation that runs experiments with pets.

Exovoid Carnage$19.99
This HEART-POUNDING WAVE-BASED ARENA SHOOTER catapults you into an alien-infested space station. SHOOT, SHRED, and SURVIVE as you crush enemy hordes, dodge chaos, and challenge yourself to set a new record. The battle escalates with every second—GET IN THERE and FIGHT!

Hells Bend on Wounded Knee$3.99
Dark medieval FPS shooter and melee combat. A single player arena adventure shooter. Reclaim your land.

Unsafe Express$11.99
Unsafe Express is a cooperative first-person survival horror game for 1-4 players. Navigate through space stations, collect materials and outlast your enemies! Choose your objective based on complexity levels, then cast your vote. Gather items, exterminate hostiles, fulfill missions and repeat!

Cold Blooded$15.0
Cold Blooded is a gripping third-person action survival horror game that lets players take the role of Amy, a determined and highly resourceful skilled fighter, who must battle for her life against an alien invasion taking over the planet.

Axiom Verge$19.99
Explore and uncover the mystery of a surreal alien world by blasting aliens and glitching your environment in this intense retro side-scrolling action/adventure.

Test Subject$4.99
An action-packed single-player FPS where you fight your way off an alien ship using fists and power-ups. Test your strength, wits, and resilience to survive and escape.

Cellular Harvest$6.99
A lo-fi game about photographing aliens so that your employers can turn them into toothpaste. Explore. Photograph. Catalog. Harvest.

The Nameless City$5.99
Narrative-driven first person horror adventure inspired by Lovecraft's short novel "The Nameless City". Explore the ruins of a city that some say they are older than humanity itself. While you delve deeper into the ancient buildings, reality and visions blend into an indistinct haze.

THE MULLER-POWELL PRINCIPLE$14.99
Welcome to a breathtaking storyline full of portals, solving puzzles with an energy-absorbing weapon, and other adventures in a sci-fi atmosphere! Can you travel through parallel dimensions and uncover the secrets of your past?

Deeper In The Dark$2.99
You like Sci-Fi games? You like FPS? You like games with secret items, collectables? You like short Indie games? Then you will love this game! The game takes place in a big mothership captured by aliens. Your mission is to kill all the aliens, and blow up the mothership.