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.
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Outcast - Second Contact
Outcast – Second Contact is the complete remake of the cult title which sparked the open world, action-adventure genre. Take off on an exploration of Adelpha, an alien world as beautiful as it is dangerous, where your heroic journey places the fate of two worlds in your hands.
Hidden & Dangerous 2: Courage Under Fire
Hidden & Dangerous 2 is a first and third person tactical shooter that builds upon the tremendous success of Hidden & Dangerous. You lead a small squad of Allied soldiers deep behind enemy lines, to carry out secret missions during World War II.
Shadow Warrior
Shadow Warrior is a bold reimagining of the classic 3D Realms’ shooter from independent developer Flying Wild Hog (Hard Reset) starring the legendary and quick-witted warrior Lo Wang.
Silver
Silver, a corrupt and sinister sorcerer, rules the land of Jarrah with an iron fist. He and his henchmen have abducted the village women as part of a pact with the almighty god, Apocalypse. Now, only one man can put a stop to Silver and his minions. That man is you, David, a promising young knight whose wife is among the captured.
LOST PLANET® 3
The extreme and unpredictable conditions that characterized the Lost Planet series return, harsher than ever before. Lost Planet 3 reveals new truths about the foreboding planet and the colonial history of E.D.N. III.
Chasm: The Rift
Prepare for terror in this ground-breaking classic old-school FPS. Following the destruction of Time you are left to battle in this horrific hellhole of multilevel interconnected missions populated by gruesome grotesque creatures.
Painkiller Overdose
The critically-acclaimed and award-winning FPS franchise is back! Packed with tons of fast-paced, adrenaline-fueled single player and multiplayer action, Painkiller Overdose brings with it 6 innovative new demonic weapons, mind-bending physics, lightning-player maps, over 40 demented and sickly-twisted monsters from Hell and gigantic end...
Forgive Me Father 2
Embark on a journey into the darkest nightmares to restore your sanity. Blast your way through hordes of possessed enemies, unlock an arsenal of deadly weapons and unearthly abilities, and get ready to face even more Lovecraftian madness in this action-packed FPS sequel.
Sniper Ghost Warrior Contracts
Become the ultimate assassin in the most realistic modern warfare sniping game available. Engage in an immersive single-player campaign across large, open-ended maps. Tactical thinking, stealth approach and precision in execution of long shots required.
Realms of the Haunting
Forged in the Beginning and protected by the Seven Seals, there lies a place where thought and creation intertwine. The center for all realms of existence, it is the balancing force between good and evil, man and spirit. A focal point for all energies, and the one element that has kept the consuming nature of darkness at bay... Until now.
SUPERHOT
SUPERHOT is the smash-hit FPS where time moves only when you move. No regenerating health bars. No conveniently placed ammo drops. It's you, alone, outnumbered and outgunned. Snatch weapons from fallen enemies to shoot, slice and dodge through a truly cinematic hurricane of slow-motion bullets.
Tom Clancy's Rainbow Six® Vegas 2
Tom Clancy's Rainbow Six® Vegas 2 - the sequel to the award-winning next-generation first-person shooter - returns to Sin City. Tom Clancy's Rainbow Six Vegas 2 is your last chance to rescue America's sexiest city from an escalating terrorist siege that will force you into heart-pounding action from beginning to end.
Terminator: Resistance
Terminator: Resistance, is a first-person shooter set during the 'Future War' scenario that was only glimpsed at in the iconic films, 'THE TERMINATOR' and 'T2: JUDGMENT DAY'. The machines are destined to lose, but at what cost?
Advent Rising
A common legend pervades the galaxy-that of a powerful, highly intelligent ancient race that will one day deliver the universe. They are known as Humans. The Advent of Humanity Begins...
Atomic Heart
In a mad and sublime utopian world, take part in explosive encounters. Adapt your fighting style to each opponent, use your environment and upgrade your equipment to fulfill your mission. If you want to reach the truth, you'll have to pay in blood.
Alien Breed 3: Descent
Experience the final explosive chapter in the Alien Breed series and uncover the horrifying truth surrounding the existence of the Breed. Launch discount good thru Nov. 24 10am PST.
Severed Steel
An intense single-player FPS featuring a stylish movement system, completely destructible levels, and an acclaimed OST.
Disney's Hercules
Become a true hero in a battle of mythic proportions.
I Am Your Beast
Hunt the military-industrial complex across stylish comic book micro-sandboxes in this fast-paced covert revenge thriller FPS from the developers of El Paso, Elsewhere.
Operation Thunderstorm
The year is 1942. The British government decides to launch one of the most risky operations of World War II. The targets are the most important figures of the Third Reich. After several months of research, MI6 chose three people: the chances of eliminating them are slim to nothing.
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 June 16th 2025.
1. Counter-Strike: Source
Similarity 52% Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology. Counter-Strike: Source is a shooter, fps and action game developed and published by Valve. Released on November 01st 2004 has received 182,234 reviews of which 175,426 were positive and 6,808 were negative resulting in an impressive rating of 9.5 out of 10. The game has hit the top spot as the #1 most played game like Half-Life: Opposing Force, thanks to its 11,527 peak concurrent players over the last day.
9.5
175,426
6,808
11,527
players
2. STAR WARS™ Battlefront™ II
Similarity 55% Be the hero in the ultimate STAR WARS™ battle fantasy with STAR WARS™ Battlefront™ II: Celebration Edition! STAR WARS™ Battlefront™ II is a multiplayer, shooter and singleplayer game developed by DICE and published by Electronic Arts. Released on June 11th 2020 has received 71,208 reviews of which 62,342 were positive and 8,866 were negative resulting in a rating of 8.6 out of 10. While seeing 7,546 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.
8.6
62,342
8,866
7,546
players
3. Counter-Strike
Similarity 64% Play the world's number 1 online action game. Engage in an incredibly realistic brand of terrorist warfare in this wildly popular team-based game. Ally with teammates to complete strategic missions. Take out enemy sites. Rescue hostages. Your role affects your team's success. Your team's success affects your role. Counter-Strike is a action, fps and multiplayer game developed and published by Valve. Released on November 01st 2000 has received 250,245 reviews of which 243,818 were positive and 6,427 were negative resulting in an impressive rating of 9.6 out of 10. While seeing 6,697 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.
9.6
243,818
6,427
6,697
players
4. Call of Duty®: Black Ops III
Similarity 50% 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 215,026 reviews of which 181,306 were positive and 33,720 were negative resulting in a rating of 8.4 out of 10. With 5,173 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Half-Life: Opposing Force.
8.4
181,306
33,720
5,173
players
5. Halo: The Master Chief Collection
Similarity 62% 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 242,067 reviews of which 223,635 were positive and 18,432 were negative resulting in an impressive rating of 9.1 out of 10. With 4,418 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Half-Life: Opposing Force.
9.1
223,635
18,432
4,418
players
6. Battlefield™ 1
Similarity 51% Battlefield™ 1 takes you back to The Great War, WW1, where new technology and worldwide conflict changed the face of warfare forever. Battlefield™ 1 is a fps, multiplayer and singleplayer game developed by DICE and published by Electronic Arts. Released on June 11th 2020 has received 192,821 reviews of which 166,775 were positive and 26,046 were negative resulting in a rating of 8.6 out of 10. With 3,884 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Half-Life: Opposing Force.
8.6
166,775
26,046
3,884
players
7. Halo Infinite
Similarity 58% 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 177,041 reviews of which 123,333 were positive and 53,708 were negative resulting in a rating of 6.9 out of 10. With 3,405 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Half-Life: Opposing Force.
6.9
123,333
53,708
3,405
players
8. DOOM: The Dark Ages
Similarity 61% DOOM: The Dark Ages is the prequel to the critically acclaimed DOOM (2016) and DOOM Eternal that tells an epic cinematic story worthy of the DOOM Slayer’s legend. Players will step into the blood-stained boots of the DOOM Slayer, in this never-before-seen dark and sinister medieval war against Hell. DOOM: The Dark Ages is a action, fps and demons game developed by id Software and published by Bethesda Softworks. Released on May 14th 2025 has received 21,671 reviews of which 18,891 were positive and 2,780 were negative resulting in a rating of 8.5 out of 10. With 2,635 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Half-Life: Opposing Force.
8.5
18,891
2,780
2,635
players
9. Half-Life 2
Similarity 90% 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. Half-Life 2 is a fps, action and sci-fi game developed and published by Valve. Released on November 16th 2004 has received 245,627 reviews of which 239,721 were positive and 5,906 were negative resulting in an impressive rating of 9.7 out of 10. With 1,626 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Half-Life: Opposing Force.
9.7
239,721
5,906
1,626
players
10. Battlefield 4™
Similarity 56% Embrace unrivaled destruction in Battlefield 4™. Revel in the glorious chaos of all-out war packed with rewarding, tactical challenges in an interactive environment. Battlefield 4™ is a multiplayer, fps and singleplayer game developed by DICE and published by Electronic Arts. Released on June 11th 2020 has received 71,148 reviews of which 60,650 were positive and 10,498 were negative resulting in a rating of 8.4 out of 10. With 1,444 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Half-Life: Opposing Force.
8.4
60,650
10,498
1,444
players
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 June 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Half-Life: Opposing Force.
1. Overload
Similarity 65% A new six-degree-of-freedom shooter with intuitive controls, amazing lighting and graphics. From the creators of Descent, Overload is the best zero-gravity robot-blasting combat ever. Overload is a action, 6dof and fps game developed and published by Revival Productions and LLC. Released on May 31st 2018 has received 2,022 reviews of which 1,903 were positive and 119 were negative resulting in a rating of 9.0 out of 10. Featuring a massive 98% discount, this game currently holds the #1 spot in the best deals for games like Half-Life: Opposing Force.
9.0
1,903
119
-98%
24.99€
0.59€
2. Hard Reset Redux
Similarity 69% Hard Reset Redux is an action-packed and hardcore single-player shooter which embraces the best qualities that the genre has it offer. It includes over-the-top destruction, loads of enemies, great weapon variety, a challenging campaign and a beautifully realized cyberpunk setting. Hard Reset Redux is a action, fps and adventure game developed by Flying Wild Hog and published by Good Shepherd Entertainment. Released on June 03rd 2016 has received 2,245 reviews of which 1,823 were positive and 422 were negative resulting in a rating of 7.8 out of 10. Thanks to its incredible 98% discount, this game is now the #2 best deal in games like Half-Life: Opposing Force.
7.8
1,823
422
-98%
19.99€
0.44€
3. F.E.A.R. 3
Similarity 56% 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 12,758 reviews of which 9,070 were positive and 3,688 were negative resulting in a rating of 7.0 out of 10. Thanks to its incredible 98% discount, this game is now the #3 best deal in games like Half-Life: Opposing Force.
7.0
9,070
3,688
-98%
19.99€
0.45€
4. Alien Rage - Unlimited
Similarity 74% 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! Alien Rage - Unlimited is a action, shooter and fps game developed and published by CI Games. Released on September 24th 2013 has received 3,455 reviews of which 2,334 were positive and 1,121 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 98% discount, this title has earned the #4 position in the best deals for games like Half-Life: Opposing Force.
6.6
2,334
1,121
-98%
19.99€
0.54€
5. Enemy Front
Similarity 60% ENEMY FRONT is the first truly modern WW2 FPS, featuring stunning visuals, open-ended levels and a richly interactive combat experience that breaks out of the standard model of highly linear scripted FPS experiences, giving the player full freedom to own their playing style. Enemy Front is a action, fps and world war ii game developed and published by CI Games. Released on June 10th 2014 has received 5,436 reviews of which 3,599 were positive and 1,837 were negative resulting in a rating of 6.5 out of 10. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like Half-Life: Opposing Force.
6.5
3,599
1,837
-98%
19.99€
0.53€
6. Necromunda: Hired Gun
Similarity 58% Become a Hired Gun. The money’s good, the dog’s loyal, and the gun’s reliable. Embark on a fast-paced, violent, and thrilling FPS set in the darkest reaches of Warhammer 40,000’s most infamous hive city. Necromunda: Hired Gun is a action, warhammer 40k and adventure game developed by Streum On Studio and published by Focus Entertainment. Released on May 31st 2021 has received 7,422 reviews of which 4,864 were positive and 2,558 were negative resulting in a rating of 6.5 out of 10. Currently offered at a significant 98% discount, this title has earned the #6 position in the best deals for games like Half-Life: Opposing Force.
6.5
4,864
2,558
-98%
39.99€
1.15€
7. Metal: Hellsinger
Similarity 55% Slay to the rhythm of metal and vengeance on an infernal journey through the eight Hells. Make them fear the beat. Metal: Hellsinger is a rhythm FPS bursting with demons, badass weapons, and heavy metal music. Metal: Hellsinger is a rhythm, fps and atmospheric game developed by The Outsiders and published by Funcom. Released on September 15th 2022 has received 15,766 reviews of which 15,140 were positive and 626 were negative resulting in an impressive rating of 9.4 out of 10. Currently offered at a significant 97% discount, this title has earned the #7 position in the best deals for games like Half-Life: Opposing Force.
9.4
15,140
626
-97%
29.99€
1.10€
8. The Darkness II
Similarity 54% An intense first person shooter that delivers a twisted and gripping narrative of tragedy, modern crime drama, and supernatural horror. The Darkness II is a fps, action and gore game developed by Digital Extremes and published by 2K. Released on February 09th 2012 has received 19,772 reviews of which 18,121 were positive and 1,651 were negative resulting in a rating of 9.0 out of 10. Currently offered at a significant 97% discount, this title has earned the #8 position in the best deals for games like Half-Life: Opposing Force.
9.0
18,121
1,651
-97%
29.99€
1.07€
9. Hidden & Dangerous 2: Courage Under Fire
Similarity 53% Hidden & Dangerous 2 is a first and third person tactical shooter that builds upon the tremendous success of Hidden & Dangerous. You lead a small squad of Allied soldiers deep behind enemy lines, to carry out secret missions during World War II. Hidden & Dangerous 2: Courage Under Fire is a action, strategy and fps game developed by Illusion Softworks and published by 2K. Released on December 20th 2017 has received 877 reviews of which 836 were positive and 41 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 97% discount, this title has earned the #9 position in the best deals for games like Half-Life: Opposing Force.
8.9
836
41
-97%
9.99€
0.39€
10. Duke Nukem 3D: 20th Anniversary World Tour
Similarity 74% 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. Duke Nukem 3D: 20th Anniversary World Tour is a fps, classic and action game developed by Nerve Software, Gearbox Software and LLC and published by Gearbox Publishing. Released on October 11th 2016 has received 5,684 reviews of which 4,802 were positive and 882 were negative resulting in a rating of 8.2 out of 10. Currently offered at a significant 97% discount, this title has earned the #10 position in the best deals for games like Half-Life: Opposing Force.
8.2
4,802
882
-97%
19.99€
0.76€
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 June 16th 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.
1. Halo Infinite
Similarity 58% 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 177,041 reviews of which 123,333 were positive and 53,708 were negative resulting in a rating of 6.9 out of 10. With 3,405 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Half-Life: Opposing Force.
6.9
123,333
53,708
3,405
players
2. Black Squad
Similarity 52% Black Squad is a free-to-play military first-person-shooter. Players can master their skills and show off their strategies with a wide range of game maps, modes, and weapons to choose from. Join thousands of FPS players worldwide in one of the most played games on Steam! Black Squad is a free to play, fps and shooter game developed by VALOFE and NS STUDIO and published by VALOFE. Released on June 26th 2019 has received 81,714 reviews of which 62,042 were positive and 19,672 were negative resulting in a rating of 7.5 out of 10. Thanks to its free to play tag and a daily player base of 197, this game has secured the #2 spot in the ranking of free games like Half-Life: Opposing Force.
7.5
62,042
19,672
197
players
3. Zula Global
Similarity 50% Zula is an intense free-to-play FPS in which you can play cooperatively with your teammates to overthrow the enemy side. You can enjoy new content weekly and receive gifts every day. Variety of maps and weapons from the real world so you can immerse yourself 100%. Zula Global is a free to play, fps and action game developed and published by Madbyte Games. Released on January 12th 2018 has received 7,595 reviews of which 5,310 were positive and 2,285 were negative resulting in a rating of 6.9 out of 10. Thanks to its free to play tag and a daily player base of 161, this game has secured the #3 spot in the ranking of free games like Half-Life: Opposing Force.
6.9
5,310
2,285
161
players
4. America's Army: Proving Grounds
Similarity 54% America’s Army: Proving Grounds is the official game of the U.S. Army and part of the highly acclaimed America’s Army game series. This free military game focuses on small unit tactical maneuvers and puts you to the test in a wide variety of new America’s Army maps and AA fan favorites. America's Army: Proving Grounds is a free to play, fps and action game developed and published by U.S. Army. Released on August 29th 2013 has received 10,952 reviews of which 8,637 were positive and 2,315 were negative resulting in a rating of 7.7 out of 10. Attracting a solid base of 160 players due to its free access, this strategy game has achieved the #4 position in the best free games like Half-Life: Opposing Force.
7.7
8,637
2,315
160
players
5. TOXIKK™
Similarity 55% FRAG LIKE IT'S 1999! TOXIKK plays as if today's military shooters never existed: Designed as a spiritual successor to the FPS giants of the late 90s and early 2ks, TOXIKK carefully evolves their mechanics with modern technology and fresh ideas elaborated with Arena-FPS enthusiasts. TOXIKK™ is a fps, action and free to play game developed by Reakktor Studios and published by Schwiezer System GmbH. Released on September 10th 2016 has received 5,811 reviews of which 4,485 were positive and 1,326 were negative resulting in a rating of 7.5 out of 10. Attracting a solid base of 105 players due to its free access, this strategy game has achieved the #5 position in the best free games like Half-Life: Opposing Force.
7.5
4,485
1,326
105
players
6. Hired Ops
Similarity 52% Hired Ops is a session-based online shooter dedicated to fierce conflicts between rival mercenary groups battling on a global scale. Hired Ops is a fps, multiplayer and free to play game developed by Absolut Soft LLC and published by . Released on April 13th 2021 has received 15,641 reviews of which 10,532 were positive and 5,109 were negative resulting in a rating of 6.6 out of 10. The game currently holds the #6 spot among the most played free games like Half-Life: Opposing Force.
6.6
10,532
5,109
68
players
7. PAPERHEAD EP.0
Similarity 51% In this cute cardboard world, something went horribly wrong... You wake up in a prison cell. A strange voice calls to you from the depths of dark corridors covered in runic symbols and blood. Reload your trusty shotgun and find out... WHY WOULD CARDBOARD... BLEED? PAPERHEAD EP.0 is a fps, fast-paced and singleplayer game developed by Paperhead te4m and published by HypeTrain Digital. Released on November 14th 2024 has received 1,842 reviews of which 1,717 were positive and 125 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #7 spot among the most played free games like Half-Life: Opposing Force.
8.9
1,717
125
32
players
8. Quake II RTX
Similarity 54% Quake II RTX is a cutting-edge, ray-traced reimagining of id software’s old school classic, by NVIDIA’s Lightspeed Studios. Global lighting effects, including realistic reflections, refraction, shadows, ambient occlusion and global illumination are a result of the path-traced simulation of light. Quake II RTX is a free to play, action and fps game developed by Lightspeed Studios™ and published by NVIDIA. Released on June 06th 2019 has received 4,590 reviews of which 4,009 were positive and 581 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #8 spot among the most played free games like Half-Life: Opposing Force.
8.4
4,009
581
14
players
9. Classic Marathon
Similarity 52% From the team that brought you Aleph One, the classic sci-fi FPS Marathon from Bungie on Mac revived for modern hardware by the fan community. Classic Marathon is a fps, shooter and pvp game developed and published by Aleph One Developers. Released on May 10th 2024 has received 935 reviews of which 858 were positive and 77 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #9 spot among the most played free games like Half-Life: Opposing Force.
8.6
858
77
8
players
10. Puppet Master: The Game
Similarity 51% This free-to-play online multiplayer game celebrates the series' 30-year legacy. Revisit iconic locations, select from a large roster of playable characters from the movies, and play a variety of online multiplayer game modes, each inspired by the Puppet’s many adventures. Puppet Master: The Game is a action, shooter and fps game developed by October Games and published by October Games and Full Moon Features. Released on May 03rd 2024 has received 1,265 reviews of which 1,101 were positive and 164 were negative resulting in a rating of 8.3 out of 10. The game currently holds the #10 spot among the most played free games like Half-Life: Opposing Force.
8.3
1,101
164
7
players