Games like Half-Life: Opposing Force on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Half-Life: Opposing Force are available at the bottom of the page.
BioShock™
BioShock is a shooter unlike any you've ever played, loaded with weapons and tactics never seen. You'll have a complete arsenal at your disposal from simple revolvers to grenade launchers and chemical throwers, but you'll also be forced to genetically modify your DNA to create an even more deadly weapon: you.Singularity™
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...Return to Castle Wolfenstein
World War II rages and nations fall. The Nazis are twisting science and the occult into an army capable of annihilating the Allies once and for all. As US Army Ranger William “B.J.” Blazkowicz, pierce the black heart of the Third Reich and stop them...or die trying.Half-Life Deathmatch: Source
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.Duke Nukem 3D: 20th Anniversary World Tour
Frag like it’s 1996 – this time with even more asses to kick! Join the world’s greatest action hero in Duke Nukem 3D: 20th Anniversary World Tour as he saves Earth once again, kicking alien ass and saving babes across the globe along the way.Serious Sam 2
Serious Sam 2 is a shot of adrenaline to the hearts of first-person shooter fans across the world. This is serious!Crysis Warhead®
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.Descent
Prepare To Start Your Descent.Sensory overload in 360° 3-D.Welcome to Descent™ - 27 levels of the most mind-bending, stomach-churning action game ever. Featuring true 3-Dimensional worlds with light source shading, texture mapping, 3-D morphing, directional sound effects and sizzling music, this is technology taken to the limit.STAR WARS™ Jedi Knight - Mysteries of the Sith™
It is five years after Kyle's victory over the seven dark Jedi. Invading Imperial forces advance upon a quiet Rebel outpost, interrupting Kyle's training of a brave new Jedi, Mara Jade. First introduced in Timothy Zahn's award-winning Star Wars novel, Heir to the Empire, Mara Jade blends her past experiences as a one time smuggler and...Crysis 2 - Maximum Edition
Aliens are decimating New York City, only you have the technology to survive. Be The Weapon.Serious Sam HD: The First Encounter
Serious Sam HD: The First Encounter is a visually upgraded and fully Steam supported remake version of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS which was Gamespot's Game of the Year 2001 and which scored overall of 87% on Metacritic!STAR WARS™ Battlefront II (Classic, 2005)
Join the rise of Darth Vader’s elite 501st Legion of Stormtroopers as you fight through an all new story-based saga where every action you take impacts the battlefront and, ultimately, the fate of the Star Wars galaxy.Quake III Arena
The greatest warriors of all time and space have been summoned to battle for the amusement of an ancient alien race. Wield a variety of guns and power-ups as you fight for glory against ruthless combatants in this fast-paced single-player and multiplayer FPS.Oddworld: Stranger's Wrath HD
You're the Stranger, a mysterious bounty hunter on a mission to bag the ultimate prize. And you need that money like no one else because there is something very wrong with your health and the only way to fix it is a very costly operation.Aliens: Colonial Marines Collection
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.STAR WARS™ Jedi Knight - Jedi Academy™
Forge your weapon and follow the path of the Jedi Jedi Knight: Jedi Academy is the latest installment of the highly acclaimed Jedi Knight series. Take on the role of a new student eager to learn the ways of the Force from Jedi Master Luke Skywalker.STAR WARS™ Republic Commando™
You are the leader of an elite squad of Republic Commandos, your mission is to infiltrate, dominate, and ultimately, annihilate the enemy. Your squad will follow your orders and your lead, working together as a team - instinctively, intelligently, instantly. You are their leader. They are your weapon.DOOM + DOOM II
Developed by id Software, and originally released in 1993 and 1994, the definitive, newly enhanced versions of DOOM + DOOM II are available as a combined product.Serious Sam Classics: Revolution
Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic action. In a world where cyberpunk meets fantasy-fiction and advanced technology is mixed with black magic and psycho-powers, Sam travels through four beautiful worlds, confronting countless foes on his way to Mental's base.Alien: Isolation
Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.Red Faction
JOIN THE REVOLUTION! Lured to Mars by the Ultor Corporation's promise of a better life, thousands have come to seek their fortune and work for the massive mining company. But all is not as it seems. A deadly plague is sweeping through the barracks, and miners suffer daily abuse at the hands of the Ultor guards.Deus Ex: Game of the Year Edition
The year is 2052 and the world is a dangerous and chaotic place. Terrorists operate openly - killing thousands; drugs, disease and pollution kill even more. The world's economies are close to collapse and the gap between the insanely wealthy and the desperately poor grows ever wider.Turok 3: Shadow of Oblivion Remastered
Finish the hunt in this epic finale to the Turok Trilogy. Pick up immediately after the events of Turok 2: Seeds of Evil, with dual protagonists Joseph and Danielle Fireseed, of the Turok family tree, as they battle the titular antagonist Oblivion and its followers, the Flesh Eaters.Most played games like Half-Life: Opposing Force on Steam
Take a look at the top games like Half-Life: Opposing Force that are currently attracting the largest player bases on the Steam platform, as of April 26th 2025.
1. Red Dead Redemption 2
Similarity 59% Winner of over 175 Game of the Year Awards and recipient of over 250 perfect scores, RDR2 is the epic tale of outlaw Arthur Morgan and the infamous Van der Linde gang, on the run across America at the dawn of the modern age. Also includes access to the shared living world of Red Dead Online. Red Dead Redemption 2 is a open world, story rich and western game developed and published by Rockstar Games. Released on December 05th 2019 has received 713,581 reviews of which 657,608 were positive and 55,973 were negative resulting in an impressive rating of 9.1 out of 10. The game has hit the top spot as the #1 most played game like Half-Life: Opposing Force, thanks to its 27,355 peak concurrent players over the last day.2. Cyberpunk 2077
Similarity 58% Cyberpunk 2077 is an open-world, action-adventure RPG set in the dark future of Night City — a dangerous megalopolis obsessed with power, glamor, and ceaseless body modification. Cyberpunk 2077 is a cyberpunk and open world game developed and published by CD PROJEKT RED. Released on December 09th 2020 has received 833,276 reviews of which 701,353 were positive and 131,923 were negative resulting in a rating of 8.4 out of 10. While seeing 19,928 players online at once in the last 24 hours, this game is currently ranked #2 among games like Half-Life: Opposing Force based on player count.3. Fallout 4
Similarity 65% Bethesda Game Studios, the award-winning creators of Fallout 3 and The Elder Scrolls V: Skyrim, welcome you to the world of Fallout 4 – their most ambitious game ever, and the next generation of open-world gaming. Fallout 4 is a open world, post-apocalyptic and singleplayer game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on November 09th 2015 has received 390,364 reviews of which 324,290 were positive and 66,074 were negative resulting in a rating of 8.2 out of 10. While seeing 13,416 players online at once in the last 24 hours, this game is currently ranked #3 among games like Half-Life: Opposing Force based on player count.4. Halo: The Master Chief Collection
Similarity 80% The Master Chief’s iconic journey includes six games, built for PC and collected in a single integrated experience. Whether you’re a long-time fan or meeting Spartan 117 for the first time, The Master Chief Collection is the definitive Halo gaming experience. Halo: The Master Chief Collection is a great soundtrack, fps and classic game developed by 343 Industries, Splash Damage, Ruffian Games, Bungie and Saber Interactive and published by Xbox Game Studios. Released on December 03rd 2019 has received 240,140 reviews of which 221,902 were positive and 18,238 were negative resulting in an impressive rating of 9.1 out of 10. With 4,847 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Half-Life: Opposing Force.5. Call of Duty®: Black Ops III
Similarity 62% Call of Duty®: Black Ops III Zombies Chronicles Edition includes the full base game plus the Zombies Chronicles content expansion. Call of Duty®: Black Ops III is a multiplayer, zombies and fps game developed by Treyarch and Aspyr (Mac) and published by Aspyr (Mac) and Activision. Released on November 05th 2015 has received 213,168 reviews of which 179,563 were positive and 33,605 were negative resulting in a rating of 8.3 out of 10. With 4,757 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Half-Life: Opposing Force.6. Fallout: New Vegas
Similarity 63% Welcome to Vegas. New Vegas. Enjoy your stay! Fallout: New Vegas is a open world, rpg and post-apocalyptic game developed by Obsidian Entertainment and published by Bethesda Softworks. Released on October 21st 2010 has received 225,642 reviews of which 216,820 were positive and 8,822 were negative resulting in an impressive rating of 9.5 out of 10. With 4,635 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Half-Life: Opposing Force.7. Metro 2033 Redux
Similarity 65% In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the Earth's surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered a new Dark Age. The year is 2033. Metro 2033 Redux is a post-apocalyptic, fps and atmospheric game developed by 4A Games and published by Deep Silver. Released on August 27th 2014 has received 96,266 reviews of which 87,371 were positive and 8,895 were negative resulting in a rating of 9.0 out of 10. With 3,248 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Half-Life: Opposing Force.8. S.T.A.L.K.E.R. 2: Heart of Chornobyl
Similarity 57% Discover the vast Chornobyl Exclusion Zone full of dangerous enemies, deadly anomalies and powerful artifacts. Unveil your own epic story as you make your way to the Heart of Chornobyl. Make your choices wisely, as they will determine your fate in the end. S.T.A.L.K.E.R. 2: Heart of Chornobyl is a open world, fps and post-apocalyptic game developed by GSC Game World and published by GSC Game World (worldwide), SEGA (Japan) and 4divinity (China and South East Asia). Released on November 20th 2024 has received 110,893 reviews of which 89,668 were positive and 21,225 were negative resulting in a rating of 8.0 out of 10. With 3,173 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Half-Life: Opposing Force.9. Mass Effect™ Legendary Edition
Similarity 56% The Mass Effect™ Legendary Edition includes single-player base content and over 40 DLC from the highly acclaimed Mass Effect, Mass Effect 2, and Mass Effect 3 games, including promo weapons, armors, and packs — remastered and optimized for 4K Ultra HD. Mass Effect™ Legendary Edition is a story rich, rpg and choices matter game developed by BioWare and published by Electronic Arts. Released on May 14th 2021 has received 55,225 reviews of which 50,283 were positive and 4,942 were negative resulting in a rating of 9.0 out of 10. With 2,614 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Half-Life: Opposing Force.10. Halo Infinite
Similarity 69% From one of gaming's most iconic sagas, Halo is bigger than ever. Featuring an expansive open-world campaign and a dynamic free to play multiplayer experience. Halo Infinite is a free to play, fps and multiplayer game developed by 343 Industries and published by Xbox Game Studios. Released on November 15th 2021 has received 176,400 reviews of which 123,072 were positive and 53,328 were negative resulting in a rating of 6.9 out of 10. With 2,541 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Half-Life: Opposing Force.Best deals on games like Half-Life: Opposing Force on Steam
Discover fantastic savings with the best discounts on a variety of games like Half-Life: Opposing Force available on Steam right now, updated on April 26th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Half-Life: Opposing Force.
1. My Friendly Neighborhood
Similarity 56% Something scary is happening with everyone's favorite Saturday morning puppet show, The Friendly Neighborhood! Play as Gordon, a repairman sent to get to the bottom of this disturbing dilemma. Fend off puppets and solve puzzles in this survival horror adventure. My Friendly Neighborhood is a singleplayer, survival horror and funny game developed by John Szymanski and Evan Szymanski and published by DreadXP. Released on July 18th 2023 has received 2,725 reviews of which 2,606 were positive and 119 were negative resulting in an impressive rating of 9.1 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like Half-Life: Opposing Force.2. Prodeus
Similarity 68% Prodeus is a first-person shooter of old, re-imagined using modern rendering techniques and technology. Experience the quality you’d expect from a modern AAA game, designed with retro aesthetics and gameplay that invoke the tech-imposed limits of older hardware. Prodeus is a boomer shooter, fps and retro game developed by Bounding Box Software Inc. and published by Humble Games. Released on September 23rd 2022 has received 7,455 reviews of which 6,930 were positive and 525 were negative resulting in an impressive rating of 9 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in games like Half-Life: Opposing Force.3. INDUSTRIA
Similarity 64% 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. INDUSTRIA is a fps, action and sci-fi game developed by Bleakmill and published by Headup. Released on September 30th 2021 has received 3,188 reviews of which 2,265 were positive and 923 were negative resulting in a rating of 6.9 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in games like Half-Life: Opposing Force.4. Borderlands: The Pre-Sequel
Similarity 59% Launch into the Borderlands universe and shoot ‘n’ loot your way through a brand new adventure that rockets you onto Pandora’s moon in Borderlands: The Pre-Sequel! Borderlands: The Pre-Sequel is a looter shooter, co-op and fps game developed by 2K Australia, Gearbox Software and Aspyr (Linux) and published by Aspyr (Linux) and 2K. Released on October 16th 2014 has received 41,197 reviews of which 33,563 were positive and 7,634 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 93% discount, this title has earned the #4 position in the best deals for games like Half-Life: Opposing Force.5. F.E.A.R. 3
Similarity 65% F.E.A.R. 3 delivers all the hallmarks that define the F.E.A.R. brand: terrifying paranormal experience, frenetic combat and a dramatic storyline. F.E.A.R. 3 is a fps, horror and co-op game developed by Day 1 Studios and published by Warner Bros. Interactive Entertainment. Released on June 21st 2011 has received 12,640 reviews of which 9,005 were positive and 3,635 were negative resulting in a rating of 7 out of 10. Currently offered at a significant 93% discount, this title has earned the #5 position in the best deals for games like Half-Life: Opposing Force.6. Marvel's Guardians of the Galaxy
Similarity 55% Fire up a wild ride across the cosmos with a fresh take on Marvel’s Guardians of the Galaxy. In this action-adventure game, you are Star-Lord leading the unpredictable Guardians from one explosion of chaos to the next. You got this. Probably. Marvel's Guardians of the Galaxy is a singleplayer, story rich and action game developed by Eidos-Montréal and published by Eidos Interactive Corp.. Released on October 26th 2021 has received 38,562 reviews of which 36,313 were positive and 2,249 were negative resulting in an impressive rating of 9.2 out of 10. Currently offered at a significant 92% discount, this title has earned the #6 position in the best deals for games like Half-Life: Opposing Force.7. Metro 2033 Redux
Similarity 65% In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the Earth's surface into a poisonous wasteland. A handful of survivors took refuge in the depths of the Moscow underground, and human civilization entered a new Dark Age. The year is 2033. Metro 2033 Redux is a post-apocalyptic, fps and atmospheric game developed by 4A Games and published by Deep Silver. Released on August 27th 2014 has received 96,266 reviews of which 87,371 were positive and 8,895 were negative resulting in a rating of 9.0 out of 10. Currently offered at a significant 92% discount, this title has earned the #7 position in the best deals for games like Half-Life: Opposing Force.8. Fobia - St. Dinfna Hotel
Similarity 57% Explore a decadent hotel across different timelines and uncover the dark history of a fanatical cult and your role in their plans. Fobia - St. Dinfna Hotel is a indie, survival horror and violent game developed by Pulsatrix Studios and published by Maximum Entertainment. Released on June 28th 2022 has received 1,922 reviews of which 1,646 were positive and 276 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 91% discount, this title has earned the #8 position in the best deals for games like Half-Life: Opposing Force.9. POSTAL 2
Similarity 58% Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong? POSTAL 2 is a violent, dark humor and open world game developed and published by Running With Scissors. Released on November 02nd 2012 has received 114,374 reviews of which 110,759 were positive and 3,615 were negative resulting in an impressive rating of 9.5 out of 10. Currently offered at a significant 90% discount, this title has earned the #9 position in the best deals for games like Half-Life: Opposing Force.10. Prey
Similarity 64% In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted. Prey is a sci-fi, immersive sim and space game developed by Arkane Studios and published by Bethesda Softworks. Released on May 04th 2017 has received 50,397 reviews of which 45,806 were positive and 4,591 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 90% discount, this title has earned the #10 position in the best deals for games like Half-Life: Opposing Force.Free games like Half-Life: Opposing Force on Steam
Check out this fantastic list of free-to-play games like Half-Life: Opposing Force you can enjoy on Steam right now, updated on April 26th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Half-Life: Opposing Force.