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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Dread X Collection 4: The Hunt
A horror anthology shooter in the Dread X Collection series. Co-produced by DUSK creator David Szymanski. Featuring 7 new short games, a robust launcher world set in an abandoned arctic base.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.
9.1
657,608
55,973
27,355
players
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.
8.4
701,353
131,923
19,928
players
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.
8.2
324,290
66,074
13,416
players
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.
9.1
221,902
18,238
4,847
players
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.
8.3
179,563
33,605
4,757
players
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.
9.5
216,820
8,822
4,635
players
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.
9.0
87,371
8,895
3,248
players
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.
8.0
89,668
21,225
3,173
players
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.
9.0
50,283
4,942
2,614
players
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.
6.9
123,072
53,328
2,541
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 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.
9.1
2,606
119
-95%
31.20€
1.56€
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.
9
6,930
525
-95%
25.00€
1.25€
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.
6.9
2,265
923
-95%
20.00€
1.00€
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.
8.0
33,563
7,634
-93%
41.86€
2.93€
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.
7
9,005
3,635
-93%
19.71€
1.38€
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.
9.2
36,313
2,249
-92%
62.38€
4.99€
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.
9.0
87,371
8,895
-92%
18.75€
1.50€
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.
8.2
1,646
276
-91%
26.00€
2.34€
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.
9.5
110,759
3,615
-90%
10.00€
1.00€
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.
8.9
45,806
4,591
-90%
29.99€
2.99€
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.
1. 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 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
123,072
53,328
2,541
players
2. Quake Champions
Similarity 59% Step into the Arena. Compete against players from around the world in this fast-paced shooter that combines the dark mythos of the original Quake with the skill-based competition of Quake III Arena. Become a Champion. Quake Champions is a arena shooter, hero shooter and early access game developed by id Software and published by Bethesda Softworks. Released on August 18th 2022 has received 38,273 reviews of which 28,231 were positive and 10,042 were negative resulting in a rating of 7.3 out of 10. Thanks to its free to play tag and a daily player base of 247, this game has secured the #2 spot in the ranking of free games like Half-Life: Opposing Force.
7.3
28,231
10,042
247
players
3. America's Army: Proving Grounds
Similarity 55% 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 10,925 reviews of which 8,618 were positive and 2,307 were negative resulting in a rating of 7.7 out of 10. Thanks to its free to play tag and a daily player base of 186, this game has secured the #3 spot in the ranking of free games like Half-Life: Opposing Force.
7.7
8,618
2,307
186
players
4. TOXIKK™
Similarity 57% 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 5,794 reviews of which 4,471 were positive and 1,323 were negative resulting in a rating of 7.5 out of 10. Attracting a solid base of 109 players due to its free access, this strategy game has achieved the #4 position in the best free games like Half-Life: Opposing Force.
7.5
4,471
1,323
109
players
5. Classic Marathon
Similarity 61% 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 883 reviews of which 812 were positive and 71 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #5 spot among the most played free games like Half-Life: Opposing Force.
8.7
812
71
43
players
6. Quake II RTX
Similarity 60% 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 4,559 reviews of which 3,985 were positive and 574 were negative resulting in a rating of 8.4 out of 10. The game currently holds the #6 spot among the most played free games like Half-Life: Opposing Force.
8.4
3,985
574
15
players
7. The Lab
Similarity 60% Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free! The Lab is a free to play, vr and singleplayer game developed and published by Valve. Released on April 05th 2016 has received 6,339 reviews of which 6,024 were positive and 315 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #7 spot among the most played free games like Half-Life: Opposing Force.
9.2
6,024
315
12
players
8. Transmissions: Element 120
Similarity 60% TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls. The story takes place at a mysterious date & location. Where are you? Why have you been sent? Transmissions: Element 120 is a free to play, action and shooter game developed by Shokunin, Thomas M. Visser and Vincent Thiele and published by Self published. Released on June 16th 2016 has received 9,779 reviews of which 9,241 were positive and 538 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #8 spot among the most played free games like Half-Life: Opposing Force.
9.2
9,241
538
5
players
9. Shadow Warrior Classic (1997)
Similarity 58% Strap on your combat sandals...Lo Wang is coming to the Land of the Rising Sun to turn out the lights. Experience total blood immersion. If you can't touch, kill or drive something...then blow it away! Whether you're wielding shurikens, an Uzi, or a freshly plundered Guardian head...you've got your work cut out for you. Shadow Warrior Classic (1997) is a fps, classic and free to play game developed by 3D Realms and published by Devolver Digital. It has received 1,471 reviews of which 1,366 were positive and 105 were negative resulting in a rating of 8.8 out of 10. The game currently holds the #9 spot among the most played free games like Half-Life: Opposing Force.
8.8
1,366
105
3
players
10. Chex Quest HD
Similarity 61% Travel to the remote planet of Bazoik to free galactic citizens from the evil cereal-eating Flemoids! Venture deep into the caverns of Bazoik, using an array of "zorching" devices to send these nefarious foes back to their home dimension! Chex Quest HD is a free to play, action and indie game developed by Team Chex Quest HD and Flight School Studio and published by General Mills. Released on May 18th 2020 has received 2,012 reviews of which 1,612 were positive and 400 were negative resulting in a rating of 7.7 out of 10. The game currently holds the #10 spot among the most played free games like Half-Life: Opposing Force.
7.7
1,612
400
3
players