Top similar games like Operation: Black Mesa:

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.

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.

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!

You are a security officer aboard Helios 2-79A, awakened to find your crew missing and your ship docked inside a mysterious station. Explore eerie environments, search for your team, and uncover the truth in Abandoned, a psychological thriller filled with suspense and unsettling discoveries.

Alien: Rogue Incursion is an all-new action-horror game that transforms you into ex-Colonial Marine Zula Hendricks on a dangerous mission to the uncharted planet Purdan, featuring the most cunning Xenomorphs ever encountered.

Dino Trauma introduces you to a secret laboratory somewhere in eastern Europe where gore and dinosaurs aren't unusual things. Retro FPS inspired by the '90s legends.

Experience Halloween Horror in PC or VR. You go out with your friends, trick or treating, entering haunted attractions, as you make your way to the big party, but this year's holiday of the afterlife brings something sinister.

Relive Half-Life.

In 1944, you take on the role of Jason Miles. On behalf of the OSS, you are sent to a waterworks near the Schneiden in the heart of Germany, because according to reports, a Nazi scientist is researching how to resurrect fallen soldiers as ghosts.

Fight the hordes of mutants that enslaved humanity through a concrete brutalist hell in this FPS with modern graphics and old school gameplay.

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.

In RED NIGHT, you play as Tess and face a demonic artificial intelligence in a horror anthology game. Each level explores a universal fear through unique and chilling worlds.

The awakening of Hell has awakened you. Go through different worlds to catch the Messiah of Hell and take back what was taken from you. Souldead is a fast-paced dark fantasy FPS shooter with a modern take on the gameplay.

Survive a dark world full of creatures and deadly machines. Explore creepy places, uncover secrets, and fight to escape, all while every word spoken is a poem. Will you break free or be lost in the darkness?

ENTER HELL and experience blood and torment the way God intended. Use shotguns, rocket launchers, and more to spread the joy of suffering to your friends and loved ones.

A retro first-person shooter inspired by classics of the '90s mixed with a dungeon crawler. Fight your way through randomly-generated dungeons to uncover the secrets of an abandoned research station for interdimensional travel.

Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.

Zombies Must Die is a gloomy retro FPS featuring dozen handcrafted levels, a lot of zombies, and deadly weapons (crossbow included!). Do you aim good enough to headshot them all?

Have a Bloody Goal is a fun first person zombie soccer game. The game puts you against a small number of zombies, hordes of zombies, giants, or give you an infinite amount of time to score as many goals as you can and not lose to your opponent who's also trying to score against you.

Alien: Rogue Incursion is an all-new action-horror VR game that transforms you into ex-Colonial Marine Zula Hendricks on a dangerous mission to the uncharted planet Purdan, featuring innovative real-life motion gameplay, a whole-body loadout, and the most cunning Xenomorphs ever encountered.

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.

Zombiemachia offers a mature and intense experience for fans of carnage. Face endless waves of zombies with weapons, traps, and dismemberment, all in a realistic environment.

The Rock Map Pack is Now Available! Join the Resistance, stand united and fight for freedom against an overwhelming military force.

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.

As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.

Embark on a distorted journey as Voidwalker, battling chaotic entities and unraveling secrets to save your universe. With retro graphics and the Quake engine, brace yourself for intense first-person shooter combat.

UFOBIA is a cooperative horror game for 1 to 4 players who need to solve puzzles and face beings from another planet.

You are the gunner of the AC-130 Gunship. One of the most lethal war machines ever made. Use your skill with thermal optics and three of the biggest and most lethal guns ever produced to stop the enemy cold. This is a mindless shooter. A game to zone out with. Relax, and destroy.

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

Vertigo 2 is a single-player VR adventure. Explore the depths of the vast Quantum Reactor as you descend to finish your journey home.

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.