Games like Half-Life: Opposing Force

Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

Relive Half-Life.

Behind a veil of secrecy the evil Empire is creating a doomsday army - one that, if finished, will become the final cog in the Empire's arsenal of terror and domination. Your Mission? Join the Rebel Alliance's covert operations division, infiltrate the Empire.

Half-Life® 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life® adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions.

You are humanity’s last hope to stop the Strogg, a hostile alien race waging war against Earth. Play this military sci-fi FPS, now upgraded for modern platforms with improved visuals, new campaign content, online multiplayer/co-op, and more.

Two New, 32-Level DOOM II Episodes. Evilution: Far from earth, the UAC recommenced their experiments on on of the moons of Jupiter. A spaceship, mistaken for a supply vexxel on radar, hovered above the base. Hideous demons poured out, blanketing the base with death. All your comrades were quickly slaughtered or zombified.

Half-Life 2 has sold over 4 million copies worldwide, and earned over 35 Game of the Year Awards. Episode One is the first in a series of games that reveal the aftermath of Half-Life 2 and launch a journey beyond City 17. Also features two multiplayer games. Half-Life 2 not required.

You are John Dalton, an ex-Marine assigned to patrol the edge of human space as a Marshal for the Terran Colonial Authority. Unexpectedly, your monotonous life is shattered by a chilling distress signal, plunging you into an adventure beyond belief. Violent turmoil among the races has erupted on your watch.

Pulse-racing new installment from 2007's PC Game of the Year*: Play as Sergeant Sykes and experience a whole new side of the battle. A standard combat mission behind enemy lines becomes critical when you discover your enemies have captured something of vital importance to the ensuing war.

After defeating Shub-Niggurath, you arrive back at your home base on Earth, but it's not all blue skies and butterflies. Apparently, not all QUAKE forces have been subdued. Chaos ensues as you blast your way through the QUAKE minions and toward the infested gateway. Your only choice is to find the source of evil and shut it down.

You are John Blade, commander of HardCorps, an elite security force dedicated to protecting the people of Freeport City. Four years have passed since your first battle with Elexis Sinclaire, a beautiful, brilliant, and ruthless scientist who is out to remake humanity according to her own twisted vision.

You & your friends are the deadliest killers in the galaxy – the US Colonial Marines. It’s up to you to not just survive, but wipe out the Xeno infestation.

Experience the single-player experience from the iconic first-person shooter, Crysis 3, optimized to take advantage of today's hardware in Crysis 3 Remastered.

Aliens are decimating New York City, only you have the technology to survive. Be The Weapon.

Experience the original F.E.A.R. along with F.E.A.R. Extraction Point and F.E.A.R. Perseus Mandate.

Adapt to Survive — An epic story thrusts players into an ever-changing environment, forcing them to adapt their tactics and approach to conquer battlefields ranging from newly frozen jungle to zero-gravity alien environments. Suit up! — A high-tech Nanosuit allows gamers to augment their abilities in real time on the battlefield.

Pulse-racing new installment from 2007's PC Game of the Year*: Play as Sergeant Sykes and experience a whole new side of the battle. A standard combat mission behind enemy lines becomes critical when you discover your enemies have captured something of vital importance to the ensuing war.

Mars, 2044. The UN establishes MARSCORP (Martian Security and Economics Committee) under the leadership of Samuel Longwood. In the years that follow, the UN gradually loses control of MARSCORP, mainly due to the non-transparent licence policy of its director.

The classic first person shooter from Crytek is back with the action-packed gameplay, sandbox world, and thrilling epic battles you loved the first time around – now with remastered graphics optimized for a new generation of hardware.

Experience the dramatic intensity of the frontlines of a war through the eyes of the first of a new breed of super soldiers in this gritty and epic first-person action game. An augmented super-soldier must stop a renegade regime from eradicating the civilized world. Hong Kong, 2065. 2nd Lt.

Aliens are decimating New York City, only you have the technology to survive. Be The Weapon.

Somewhere in deep space, at an apparently abandoned mining base on the asteriod Alpha Prime, something has gone terribly wrong. Miners were warned that the hubbardium they were mining was too dangerous, but the lure of unimaginable wealth was too strong.

TWO NEW EPISODES. SIXTEEN NEW LEVELS. ONE WAY OUT. Your journey has led you down a path of no return. The acrid smell of death fills the air. And you know the road ahead may lead to your grave. But Quake, with his insidious, apocalyptic plans, must be crushed. If you fail, evil will shroud the universe for all eternity.

More pulse-pounding 360° action blasting through tunnels with six degrees of freedom.

Relive the legendary single-player campaign from the classic first-person shooter, Crysis 2, optimized for today's hardware in Crysis 2 Remastered.

Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Playing as Alyx Vance, you are humanity’s only chance for survival.

Fast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!

You are the victim of a conspiracy! The FBI, CIA and a group of murderers are chasing you. XIII… This strange tattoo and the key of a safe are your only clues to survive and claim your innocence! It's time to gear up and eliminate your ennemies!

This terrifying 1990s sci-fi first-person shooter from Capstone Software has you venturing deep into the dark and twisting test chambers of Corridor 7 to combat a hostile takeover of Earth.

Unleash a fury of powerful weapons as you blast your way through armies of Alien forces hell-bent on taking you down! Battle through 14 intense levels and prepare to face a barrage of beastly-sized bosses that will test your every skill. Each of your 10 weapons comes with two firing modes and you’ll need all of them!

Survive, hunt and prey in the deadly jungles and swamps in distinctly new and thrilling first person gameplay.

Wolfenstein 3D took you into the past, thrusting you into a world at war. Blake rockets you into the future where a sinister madman, using genetics to create an army of bizarre creatures, is waging war on Earth. Blake has more of everything!

Wolfenstein®: The New Order reignites the series that created the first-person shooter genre. Wolfenstein offers a deep game narrative packed with action, adventure and first-person combat.

Tom Clancy's Rainbow Six makes its next-generation hardware debut in the most dramatic installment of the renowned first-person shooter franchise to date. Rainbow operatives take to the chaotic streets of Las Vegas as an escalating terrorist siege in 'Sin City' threatens to take world terrorism to new, uncontrollable heights.

Over-the-top destruction, loads of enemies & a beautifully realized cyberpunk setting. Hard Reset is here to shake up the shooter scene. Try the demo now.

The Intelligence Agency has commissioned you, Francis Rixon, to find out what is happening inside the Corporation's confines and to retrieve information about a secret mineral upon which the very existence of the human race may depend.

The fate of the world is in your hands. New and old enemies threaten the peace you worked so hard to achieve 24 years ago. Your search for the Alpha Ceph continues, but this time you'll also need to expose the truth behind the C.E.L.L. corporation.

FIGHT THE PAST TO SAVE THE FUTURE. STOP THE SINGULARITY. Learn the truth behind a massive cover-up of the catastrophic SINGULARITY, an event that fractured time and threatens the world as we know it. Armed with powerful, advanced weaponry and the experimental Time Manipulation Device, fight enemies from the past, the present, and...

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.

You are Joseph Walker. After waking up in a strangely deserted science facility with no recollection of how you got there, you hear the voice of an A.I. The A.I. promises to be your guide and to help you out of the facility. However, it is clear right away that it’s not telling you everything.

You are a gun for hire, trapped in a war-torn African state, stricken with malaria and forced to make deals with corrupt warlords on both sides of the conflict in order to make this country your home. You must identify and exploit your enemies' weaknesses, neutralizing their superior numbers and firepower with surprise, subversion,...

Your mission is to kill the communistic overlord that has taken over the United States at a forward operating base in the arctic.

Downloadable Content and 4-Pack Now Available! Give the extra copies to your friends!

Dusk 12 is a first person shooter, full of action where the player will incarnate two heroes. One of the soldiers of the group, with unknown past and one of the infected men with the virus, who has strength, speed and fortitude beyond human limits.

Assume the role of Special Forces Sgt. Becket as your routine mission quickly turns into a fight for survival against the wrath of Alma Wade. As Alma's terrifying power surges out of control, your squad is forced to battle through an apocalyptic landscape in search of clues for how to destroy her!

SPIDER INFERNO is a single player horror third person shooter game. You have to save the world from the professor and the spiders. In 8 missions + 2 bonus levels you have to prove your skills and win. Don't disappoint us. That's why we make you the savior of humanity!

3D Realms, creators of Duke Nukem 3D, Prey, and Max Payne, team up with Voidpoint to bring back the legendary Build Engine, famous for classic shooters like Duke Nukem 3D, Shadow Warrior, and Blood. Fast-paced FPS combat across huge, secret-packed levels. Ion Fury is the real deal!

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.

Stranded on the Rook Islands as Jason Brody, fight your way through a lawless tropical open world using a powerful arsenal to save your friends and escape the madness of this acclaimed visceral FPS.

Prepare for one of the most action packed-shooters in PC gaming history! Every level is full of enemies and targets for you to destroy! You will become a soldier of the alien species and protect your home world from the forces of the Human armada.

Lead an elite fighting team battling for freedom from the sinister forces of the Earth Hegemony. Engage in combat on the bloody battlefields of four unique worlds. Encased in your Powered Battle Armour (PBA) you are an unstoppable fighting force.

Use Nukes, Electricity, Heat Rays and powerful Minions in this wave-based first person shooter providing endless hours of Ghost-slaying entertainment, solo or Co-Op. Only Ghosts stand in the way of your invasion of Earth.

Action shooter with story elements.

Deadzone: Rogue is a roguelite FPS set in space. Blast through swarms of hostile machines, combine powerful augments and elements to forge your build, and grow stronger with each run — solo or in co-op.

Inspired by BioShock and System Shock 2, Void Bastards is a revolutionary new strategy-shooter that will test your wits as well as exercise your aim. Can you lead the misfit prisoners of the Void Ark through the derelict spaceships and myriad dangers of the Sargasso Nebula?

Beyond Citadel is an anime style retro throwback shooter inspired by the classics of the 90's, with realistic gunplay mechanics, anime violence and fast paced combat. Fight your way through the heavily armed mechanical fortress and discover the secret that lies beneath.

It's the 22nd century: Galactic travel is commonplace, peace is at hand, and the future looks bright - until Goldfire's plan to unleash an army of military mutants shocks the galaxy. Dr. Goldfire, a brilliant bio-scientist whose morbid research led to incredible genetic improvements in humanoids and aliens, has gone power crazy.

S.T.A.L.K.E.R.: Shadow of Chornobyl, the first chapter of the Legends of the Zone Trilogy, which started it all.

Echo Point Nova is an open-world FPS that offers unparalleled freedom and thrilling speed. Designed for both singleplayer and coop. From the creators of Severed Steel.

One of the greatest sci-fi strategy games of all time returns with remastered visuals, online multiplayer and near unlimited mod content from Steam Workshop. Experience thrilling first person action and acclaimed RTS in this explosive alternate vision of the 1960s space race.

An old-school shooter inspired by Wolfenstein 3D. You are one of the prisoners of an ancient prison. There is no one to help you. You only have yourself to rely on. Your shotgun. Against hordes of enemies. Animal rage and the desire to kill. Destroy Them All!

Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!

Embark on a gripping journey in INDUSTRIA, an atmospheric FPS set in Cold War-era East Berlin. Unravel the secrets of a mysterious parallel dimension while searching for a missing colleague. Explore a haunting reality where the truth awaits. Discover the dark past that lies beyond.

Us Against Aliens is a survival shooter game on a spaceship that flies towards Earth. On the ship, something is constantly happening and you need to solve these problems along the way by shooting back from aliens who are constantly hunting you

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.

Sergeant, last night we received a signal that an unknown aircraft of extraterrestrial origin had crashed in the taiga. The locals assured us that at the crash site they observed five creatures very similar to humans, only with gray skin and large almond-shaped eyes.

E.T. Armies is an action-packed, fast-paced, science-fiction first person shooter. The game takes place in a future where Earth has been reduced to ashes; It is now home to a new nation that hungers only for war. Prepare yourself to rise and defend against the invasion of the Forsaken.

The year is 3015. The battlefields are dominated by war machines known as BattleMechs. Level entire cities and decimate the enemy in your BattleMech. Follow a quest for glory and revenge. Manage an expanding mercenary company. Fight alongside your friends with a four-player PvE co-op.

Nu Earth: a poisoned planet where endless war rages between the Norts and the Southers. A futile struggle on a hostile planet with no end in sight. But there are tales of a lone warrior. A man who knows no allegiance, the Rogue Trooper!

In the anarchic world of Freeman: Guerrilla Warfare, only the mightiest warlord rules. Start with a pistol and a few militias, you will set yourself on a wild and ambitious journey towards world domination. Enjoy the immersive combination of intense FPS and sandbox strategy.

Fast paced FPS with high customizational freedom. From game mode customization to an in depth weapon tuning and attachment system up to detailed character customizations, while it was developed so you can choose to either go for high performance or graphical fidelity without an high end PC.

S.T.A.L.K.E.R.: Call of Prypiat follows the story of special service agent Major Degtyarev as he investigates the fate of a lost expedition.

Race against time and terrorism as a member of the elite counter terrorist team in this all-out first person shooter. Your duty is to hunt down a terrorist overlord carrying a nuclear device before untold disaster is unleashed.

Ripout is an online Co-Op horror FPS that will have players fight their way through procedurally generated derelict ships filled with mutants capable of reconfiguring their alien bodies. Survive with your trusty Pet Gun companion, collect loot, and customize your character to fit your playstyle.

A fast paced FPS with an engrossing storyline written by cult Scottish author Christopher Brookmyre. You play Heather Quinn aka “Athena” trapped in a world of video games, desperate to find a way back home. Will you make it? Or will you be trapped here forever? Here's where you find out..

SPACE DUDES vs ALIEN DUDES - Alien Dudes are attacking the Base, It's up to the Space Dudes to Stop Them ! Play Across Many Maps and Game Modes to Win the Day !

La Quimera is a story-driven FPS set in dystopian future Latin America. In a fractured world where microstates rely on mercenary forces, you are an operative caught in a web of lies and deception. Play alone or with up to two friends geared with futuristic weapons, exoskeletons and combat abilities.

Enter the realm of a retired assassin, forced back into action by treason. You may be a hired killer but you still have a sense of loyalty and justice. Visit the dark recesses of a world corrupted by crime, greed, degradation and dishonor. And a past that catches up with you.

Prepare for the Future™ With Fallout 3: Game of the Year Edition, experience the most acclaimed game of 2008 like never before. Create a character of your choosing and descend into an awe-inspiring, post-apocalyptic world where every minute is a fight for survival.

The endless darkness and the somber, long passages of a military complex have become the abode of evil, thousands of blood-thirsty creatures fill its offices, storehouses and mysterious laboratories. About 1,000 monsters on each map, showing up to 100 monsters simultaneously on one playing screen.

Drop into massive, alien-built arenas and begin the frantic search for weapons and gear - all while trying to stay one step ahead of the advancing plasma field… or the sights of other contenders. ION offers its players a skill-driven, first-person-only Battle Royale all built into a unique sci-fi universe.

Priviet to Astralis ! In this short game, you play as Lieutenant Alekseï Ivanov, a soldier awaken from his cryo-sleep to face a terrible threat happening in the soviet spaceship "Astralis" lost in an unkown part of the universe. Astralis is FPS horror sci-fi game with retro graphics and sounds.

Aliens: Fireteam Elite is a cooperative third-person survival game set in the iconic Alien Universe. Battle through hordes of different types of Xenomorph, customize your character and gear, and level-up as you try to contain this ever-growing threat.

When John "Striker" Gullivan left the SAS, he's been far from thinking about retirement. A skilled sniper, veteran of many covert operations, he was ready to take on the less legal side of the "business".

S.T.A.L.K.E.R.: Clear Sky – standalone prequel for the acclaimed S.T.A.L.K.E.R.: Shadow of Chernobyl, which tells you story about the Clear Sky group, that want to research the Zone and understand it better.

Immerse yourself in Andrew's story and feel the pressure of being a sniper. Find and eliminate the target in the crowd before he runs away.In living environments, designed exclusively for this fantastic game, you will not have a second chance, precision is everything!

In Hollow Space, you are transported to an abandoned space station drifting on the edge of the galaxy. A rescue crew responds to a mysterious SOS signal, only to find that something terrifying lurks in the shadows. Will you dare to face the danger, or will you become the monster yourself?

Battle for survival against endless alien hordes with your friends! The Anacrusis is a first-person shooter that dynamically adjusts difficulty to you. Experience intense 1-4 player co-op action or play as the aliens and stop your friends in 1-8 player Versus mode. Full Steam Workshop support!