Top similar games like Operation: Black Mesa:

It's 2052, and after waking up from hyper-sleep, you quickly realize something is seriously wrong. Your ship has landed inside an alien space station, and you have no idea how or why. Your first task? Find out what happened to the missing crew.

MUTATION PHASE is a horror-shooter with a first-person view, which narrates the consequences of experiments with sound waves. You have to survive among hordes of mutants and get out of the danger zone.

Menticide is a survival horror game that takes you through chilling investigations. As a special forces operative, you'll delve into routine missions that unravel into terrifying mysteries. Dark secrets await beneath the surface. Will you survive long enough to uncover the truth?

Nostalgic multiplayer fps game you used to play in the 2010s! Play online with bots or online with friends, collect weapons, and get the best score! Feel the energy of the fast-paced gameplay, huge amount of maps and items and become legend!

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.

Boot up your 486 and launch olcst.exe for this retro fps from an alternate 1990's. Descend into the madness of the Spanish Civil War fighting vicious fascist forces and supernatural monsters. Conquer three action packed episodes wielding machine guns, rifles, flamethrowers and explosives.

In this game you have to fight your way through hordes of zombies in search of a safe place.

Son and Bone is a fast-paced first-person shooter where you take on the role of Sam Judge, a Sheriff, that after tracking down a notorious bandit who attacked a farm and kidnapped a local, has found himself on an alien world overrun by prehistoric creatures and dinosaurs.

Nightmare has descended on the starship Starfarer ETOS-1. Battle the hoards, defend the crew, resist the infection and uncover the truth in this first-person Sci-Fi horror shooter, harnessing powers, upgrading weapons, and battling to survive. The voices are calling you. Will you listen?

A deadly virus, designed to reanimate the dead and integrate them with cybernetic enhancements, escapes containment and turns the facility's inhabitants into relentless, cybernetic zombies.

Sabotage a cult and their schemes in this Mystery, Horror, FPS. Explore a mansion while massacring the creepy followers and their foul abominations. Find various weapons to slay your enemies with and uncover the cruel secrets of the organization.

In a galaxy far away a world is facing doomsday. As nations rise against each other the world is plunged into chaos. Many illegal groups such as gangs and independent militias and demonic cults take the advantage of the situation to expand. Your task is to assassinate a demon dubbed Lord of Terror.

You are a TEC Engineer from Earth ordered to retrieve and return sensitive data from the TEC Mining Facility on Titan. On arrival, you discover that the facility has been invaded by beings from another realm. Contend with these abominations as you complete your mission and escape Titan.

BF:RI Is a Hardcore Tactical Shooter depicting the ongoing Burkina Faso Insurgency. You are CIA Special Operations Group tasked with hunting down ISIS insurgents

"Silence In The Cabin" is an Open Map Survival Horror Game, where you must survive Dark linear story sections in order to unlock more areas of the world.

Perilous Warp is a fast-paced indie retro-shooter inspired by the classic 3D-actions. Communication with a distant space colony has been lost, and you bravely step into the teleporter with the desire for glorious adventures. But do not expect to win in a heartbeat!

Become the ultimate badass in Trepang2: A gory, action-packed FPS set in the near future. Unleash all hell on your enemies, dodge bullets and leave a trail of destruction in this hardcore and frenetic shooter.

Something is happening in town. People are going crazy attacking each other. Can you survive to find out what's causing this insanity? Who's behind this zombie outbreak?

An action-packed FPS where you defend your trench against waves of attacking enemies by utilizing a large selection of modern (and not so modern) military weapons, features both single-player and two player online multiplayer (peer-to-peer).

A thrilling, first-person, action-survival game set in the modern post-apocalypse. As mankind’s last hope, you’ll traverse the hospital ravaged by a lethal plague. the fight for survival gets progressively more difficult as the story unfolds. Be ready for violence

Relive Half-Life.

Embark on a thrilling journey through the eyes of a security gate officer who must face super-biological horrors beyond both knowledge and comprehension in this first-person shooter styled after old PS2 game graphics.

Enter a realm of nightmares and claw and shoot your way through hordes of bloodthirsty vermin and things that are much, much worse in this retro FPS

Fight for survival in the Backrooms. Play with friends in multiplayer or solo against AI bots. Unearth the terrifying monster scorestreak and get ready for an intense experience!

COVEN is a hyper-violent retro FPS where your path of vengeance will take you across time and space. Destroy your enemies and eat their flesh.

Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.

Waking Nitemare: A newtro FPS with modern twists. Dash, heal with melee headshots, use bullet time. Face unique bosses, find upgrades. Classic shooter action meets innovative mechanics. For retro fans and newcomers alike.

Witching Hour is a zombie wave shooter where you have to survive until the clock strikes 12. You are trapped inside the house while hordes of zombies attack you from every angle. Can YOU survive until witching hour?

You are following the story of security guard working at power plant which uses experimental technology, designed to draw electricity from atmosphere. One day you start hearing strange stories about anomaly sightings, soon you witness something terrifying and start experiencing nightmares...

A Realistic First-Person, 6v6 Tactical Shooter. In an alternate universe where the Soviet Union never fell apart, it looks like the two modern superpowers are starting to get along. Behind the scenes however, the best operatives that NATO and the Warsaw Pact have to offer are going head to head.

Death is only the beginning. Crawl from your grave and gear up to fight your way through the ranks of a mysterious and twisted cult. You, your guns, and your dynamite will have to shoot, slide, blast, duck, dodge, and maybe throw a gib or two to survive in this old-school-inspired shooter.

Splatter is a first-person fever dream where you blast constantly-adapting enemies into neon sprays of pulp and slime. Enter a digital mindscape constructed by four anonymous administrators. Can you survive? Can you remain sane? Can you remain yourself?