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.

You’re an Operator in a covert underground facility, researching advanced military and alien technology. A routine day takes a sinister turn... Fight hostile creatures, explore alien corridors, and uncover the mystery as you struggle to escape

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.

A new action-horror story set in the iconic Alien universe. Play as rogue Colonial Marine Zula Hendricks, sent to investigate a blacksite on Purdan. Fight and survive using your skill, reflexes, and determination against a deadly Xenomorph incursion in this gripping first chapter of a two-part saga.

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.

Welcome to SHROT! A fast, funny, and unapologetically stupid first-person boomer shooter where a Slavic trucker gets stuck in an alien apocalypse and handles it the only way he knows how: with beer, cigarettes, and unresolved anger issues.

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.

A fast, focused retro FPS. Fight through 30 missions with tight gunplay, no filler, and a grim story you can choose to follow or ignore. No upgrades. No distractions. Just a weapon, a target, and the consequences that follow.

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.

A hyper-real bodycam horror mission. Infiltrate a derelict shelter broadcasting gore and snuff for the dark web. Find the missing girl — or become the next stream.

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.

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?

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

A city hall surveyor searches for his missing colleagues in a bahay-na-bato, only to uncover the house's sinister ties to Philippine history and folklore. Explore items and records, solve puzzles, and face enemies as you unravel the mysteries within and beyond the property walls

Grab your sawed-off, cast some sigils, and face the never ending nightmare head on in Venison County. Blast your old neighbors into undead venison giblets, master weapon specific active reloads, and limitlessly combine slain cultists' sigils for their sinful buffs (if you can withstand God's wrath).

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.

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.

Play as Madeline, who broke into an abandoned plant chasing a legendary prize buried in rusted halls. But something else was waiting, grotesque toys that move and kill on sight. Navigate toxic corridors and decaying machinery. No jumping. No lifts. Just pure, grounded old-school carnage.

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.

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.

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

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.

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.

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.