Top similar games like Colony Assault:

CRIMSON METAL - Far from Perfect, brutal and merciless.

Dark Places is a psychological single-player game set in a surreal world filled with horrific creatures and nightmarish delusions. Solve puzzles and try to survive.

Hatred is a violent twin-stick shooter, in which you take the role of The Antagonist fighting against all of humanity.

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.

Today is a special day. The government decided to make an extraordinary and unpredictable experiment. Its objective is to learn how people are going to behave and what they will do if given full freedom and thus allowed to do just whatever they want for a period of 24 hours.

Endure... Evolve... Or Die. Embrace the unknown and traverse a vast alien world riddled with bizarre creatures, deadly hazards, and grim mysteries. Seek redemption, and confront the terrifying sin buried in the depths of the forgotten planet Protea VI.

SILENT DOOM is an atmospheric first-person survival horror adventure set in a nightmarish universe. Gameplay consists of combat, exploration, and puzzle-solving. It is designed around the idea of "being thrown into the world". Isolated and lost inside this nightmare world.

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!

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...

CASE: Animatronics is a truly scary and challenging first-person stealth horror on PC. Control of the police department is in the hands of anonymous hacker. All exits are locked. Electricity is off. Metallic thumps are getting closer. Will you survive, Detective Bishop?

Hell is an experiment you can't survive in Outlast, a first-person survival horror game developed by veterans of some of the biggest game franchises in history. As investigative journalist Miles Upshur, explore Mount Massive Asylum and try to survive long enough to discover its terrible secret... if you dare.

Once again, you are on board Shakhter-One. Traverse the deck of a well-known mining ship and the depths of Mark's twisted mind blended together. Run, fight, hide, explore – discover, what really happened to this place and do your best to destroy Shakhter-One.

You are Wendigo. A hard-hearted contract killer tasked with annihilating a fanatical cult. With your trusted arsenal at the ready, experience what has been called "The most violent game in VR". EARLY ACCESS includes RAID, ARENA and SANDBOX modes with a story campaign and much more on the way.

MEATSHOT is a gory, action-packed shooter where you embody an unstoppable beast in a digital realm. Run along walls, dodge bullets, and pull off acrobatic gunfights in slow motion with pinpoint accuracy as you unleash carnage, taking down elite soldiers.

A first person survival horror where escape is an illusion. No flashlight, no inventory—just your instincts… and what lurks behind you.

Make a Killing is a first-person single-player survival horror game. You play as Cole, a man that travels to unhallowed grounds in hopes of saving his brother Jace, only to be ensnared in a game of cat and mouse with a century old mass murderer.

MADiSON is a first person psychological horror game that delivers an immersive and terrifying experience. With the help of an instant camera, connect the human world with the beyond, take pictures and develop them by yourself. Solve puzzles, explore your surroundings and most importantly, survive.

Enter this first-person shooter with dark and realistic scenarios, use your shooting skills to kill all the enemies and survive. Explore the scenario and collect all the resources you can because you will need them to get out alive.

Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.

Cosmic VR Action Horror focusing on intense shooter action, twisted sci-fi anthology stories and disturbing atmospheric dread. You’re marooned alone in the Bermuda triangle of space, filled with ancient derelicts and ravenous aliens: By Grit Alone, you will survive.

【Can you live with this fear?】 A horror game developed by a Japanese high school student all by himself is coming to Steam! Escape the monster's pursuit in the creepy mansion, sometimes using weapons to fight back and find the key to escape!

There Is No Tomorrow is a 3rd person retro-anime action-adventure survival game with a talking doll companion. Leon traveled into the future where humans are at a brink of extinction due to the 'RA'. Choose your approach, Stealth or Action with multiple story endings.

Alice returned to her hometown after a long journey. But nobody was there. Save the inhabitants and defeat the leader of the gang.

A psychological horror game where fear and paranoia merge into a terrifying story!

The sci-fi survival-horror classic returns, completely rebuilt to offer an even more immersive experience — including visual, audio, and gameplay improvements — while staying faithful to the original game’s thrilling vision.

WARNING! This game has an Age Restriction of 18. Vapour is an experimental horror game, that fuses elements of both old school and modern horror titles with the frantic game play of classic First Person Shooter titles. Blending horror, shooter, action, puzzle and platformer in a dynamic yet cohesive combination.

SIDE - sci-fi roguelite game in which the player will take on the role of one of the survivors in the vastness of cosmic dust and shipwrecks left over from the last galactic war of the remnants of humanity.

SECOND SHIFT is a first-person game that immerses the player in a deep and intense horror atmosphere. Using a mysterious clock, you must uncover terrifying secrets while trying to escape the mine. Solve puzzles, pay attention to your surroundings, and most importantly, survive.

You awake to the sound of your own panicked breath. In Manhunt, you must run, hide and fight to survive. If you can stay alive long enough, you may find out who did this to you. This is a brutal blood sport.

Creature Hunt is a combination of a survival horror and a hunting simulator. According to some articles in the local press, a few days ago several bodies of dead tourists were found in the woods of North Carolina.

PSIONIC is a 2D shooter set in a haunted psychiatric hospital. As the sole survivor, a trapped scientist, your mission is to escape while battling mutated creatures. Survive, fight, and find a way out. Can you make it?

SANRI is a first-person psychological horror game where you play a schizophrenic character whose wife disappeared during camp. Face the delusions, solve the mystery and try to find her despite your constantly distorted perception of time-space.

PSYCHO - is an exciting 3D shooter with hardcore elements where you will explore an abandoned psychiatric hospital playing as a fighter SWAT.