Games like Half-Life: Source on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Half-Life: Source are available at the bottom of the page.
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Day of Defeat: Source
Valve's WWII Multiplayer Classic - Now available for Mac.
E.Y.E: Divine Cybermancy
In a dark Cyberpunk world, you (and up to 3 friends) wage war against the all-powerful Federation in this Source-powered FPS/RPG.
Masked Forces
Masked Forces is an action-packed game where your main purpose is to eliminate your enemies using any means necessary. You have a great singleplayer campaign and multiple online game modes that you can use to show your might.
Deus Ex: Human Revolution - Director's Cut
You play Adam Jensen, an ex-SWAT specialist who's been handpicked to oversee the defensive needs of one of America's most experimental biotechnology firms. Your job is to safeguard company secrets, but when a black ops team breaks in and kills the very scientists you were hired to protect, everything you thought you knew about your job...
Global Agenda: Free Agent
2155. From the ashes of the devastating Third Great War rose the Commonwealth, an oppressive world government determined to control the entire planet. The few remaining independent factions retaliate the only way they can, with elite teams of special operatives trained in advanced warfare tactics and equipped with high-tech weaponry.
Pirate Fighting Simulator
Pirate Fighting Simulator is a free multiplayer PVP game developed in UE5 in which you fight other players using typical pirate weaponry.
Rebel Forces
Are you ready to be the ultimate soldier and fight until you defeat all of your enemies?
Warhammer 40,000: Battle Sister
Welcome to the grim darkness of the far future! Experience the war-torn universe of Warhammer 40,000 brought into jaw-dropping, visceral reality for the first time in VR. Immerse yourself in a gripping, action-filled story spanning the galaxy.
WARMODE
Free to play shooter about the confrontation of two irreconcilable sides, represented by the government military housings and the armed hirelings. Try your hand at virtual battles with off-scale dynamics and hurricane gameplay in the spirit of the classical shooters.
Vanquish
PlatinumGames’ revolutionary sci-fi action shooter slide-boosts onto PC. Battle legions of future-tech enemies using a vast arsenal of weapons, including all DLC. Fully unlocked framerate and gorgeous HD resolutions up to 4K. The definitive way to play: war has accelerated.
Nightmare of Decay
A first-person action horror game set in a nightmarish manor infested with zombies, psychotic cultists, and a horde of other horrors. Utilize an assortment of different weapons in a brutal fight for survival as you try to escape from the Nightmare of Decay.
Counter-Strike: Source
Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology.
Oblivity - Find your perfect Sensitivity
Oblivity is an advanced aim training software that provides everything you need to improve your aim! Find your perfect, intuitive mouse sensitivity with Oblivity's sensitivity finder. Or detect your bad aiming habits in the extensive analysis and replay space.
Zula Global
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%.
Sanctum 2
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
STRAFE: Gold Edition
STRAFE® is the worlds bloodiest roguelike first-person shooter! Featuring mind melting secrets and persistent gore that allows you to paint levels red with the excessive entrails of your enemies. 30+ weapons, 20+ enemies, & a red hot soundtrack.
America's Army: Proving Grounds
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.
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.
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.
Most played games like Half-Life: Source on Steam
Take a look at the top games like Half-Life: Source that are currently attracting the largest player bases on the Steam platform, as of June 16th 2025.
1. STAR WARS™ Battlefront™ II
Similarity 54% 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. The game has hit the top spot as the #1 most played game like Half-Life: Source, thanks to its 9,213 peak concurrent players over the last day.
8.6
62,342
8,866
9,213
players
2. Counter-Strike
Similarity 63% 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 7,323 players online at once in the last 24 hours, this game is currently ranked #2 among games like Half-Life: Source based on player count.
9.6
243,818
6,427
7,323
players
3. Counter-Strike: Source
Similarity 50% 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. While seeing 6,187 players online at once in the last 24 hours, this game is currently ranked #3 among games like Half-Life: Source based on player count.
9.5
175,426
6,808
6,187
players
4. Call of Duty®: Black Ops III
Similarity 56% 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 5,414 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Half-Life: Source.
8.4
181,306
33,720
5,414
players
5. DOOM: The Dark Ages
Similarity 62% 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 3,518 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Half-Life: Source.
8.5
18,891
2,780
3,518
players
6. Halo: The Master Chief Collection
Similarity 66% 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 3,362 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Half-Life: Source.
9.1
223,635
18,432
3,362
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 2,275 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Half-Life: Source.
6.9
123,333
53,708
2,275
players
8. KovaaK's
Similarity 55% Master your aim with KovaaK’s, the world’s best aim trainer. With over 200,000 scenarios, playlists and more! Embrace total customization, including a map editor and game physics. More than just a trainer, it’s a dynamic, community-driven platform that elevates your gameplay. KovaaK's is a action, shooter and simulation game developed and published by KovaaK Games. Released on April 03rd 2018 has received 35,305 reviews of which 32,776 were positive and 2,529 were negative resulting in an impressive rating of 9.1 out of 10. With 1,719 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Half-Life: Source.
9.1
32,776
2,529
1,719
players
9. DOOM
Similarity 59% Now includes all three premium DLC packs (Unto the Evil, Hell Followed, and Bloodfall), maps, modes, and weapons, as well as all feature updates including Arcade Mode, Photo Mode, and the latest Update 6.66, which brings further multiplayer improvements as well as revamps multiplayer progression. DOOM is a fps, gore and action game developed by id Software and published by Bethesda Softworks. Released on May 12th 2016 has received 207,279 reviews of which 198,001 were positive and 9,278 were negative resulting in an impressive rating of 9.4 out of 10. With 1,590 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Half-Life: Source.
9.4
198,001
9,278
1,590
players
10. Half-Life 2
Similarity 93% 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 1,555 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Half-Life: Source.
9.7
239,721
5,906
1,555
players
Best deals on games like Half-Life: Source on Steam
Discover fantastic savings with the best discounts on a variety of games like Half-Life: Source 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: Source.
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: Source.
9.0
1,903
119
-98%
24.99€
0.59€
2. Battlezone 98 Redux
Similarity 56% 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. Battlezone 98 Redux is a strategy, action and first-person game developed by Big Boat Interactive and published by Rebellion. Released on April 18th 2016 has received 1,064 reviews of which 975 were positive and 89 were negative resulting in a rating of 8.7 out of 10. Thanks to its incredible 98% discount, this game is now the #2 best deal in games like Half-Life: Source.
8.7
975
89
-98%
19.99€
0.58€
3. ShootMania Storm
Similarity 55% ShootMania the FPS “Powered By Players”ShootMania Storm is revolutionizing the multiplayer FPS by adding a community dimension and unlimited replayability. Developed by the Nadeo studio, renowned for community racing game, TrackMania, ShootMania Storm boasts quick-fire matches and epic battles, where only your talent will distinguish you... ShootMania Storm is a action, shooter and fps game developed by Nadeo and published by Ubisoft. Released on April 10th 2013 has received 854 reviews of which 729 were positive and 125 were negative resulting in a rating of 8.1 out of 10. Thanks to its incredible 98% discount, this game is now the #3 best deal in games like Half-Life: Source.
8.1
729
125
-98%
19.99€
0.46€
4. Hard Reset Redux
Similarity 66% 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. Currently offered at a significant 98% discount, this title has earned the #4 position in the best deals for games like Half-Life: Source.
7.8
1,823
422
-98%
19.99€
0.48€
5. 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. Currently offered at a significant 98% discount, this title has earned the #5 position in the best deals for games like Half-Life: Source.
7.0
9,070
3,688
-98%
19.99€
0.45€
6. Alien Rage - Unlimited
Similarity 73% 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 #6 position in the best deals for games like Half-Life: Source.
6.6
2,334
1,121
-98%
19.99€
0.54€
7. Enemy Front
Similarity 57% 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 #7 position in the best deals for games like Half-Life: Source.
6.5
3,599
1,837
-98%
19.99€
0.53€
8. Necromunda: Hired Gun
Similarity 56% 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 #8 position in the best deals for games like Half-Life: Source.
6.5
4,864
2,558
-98%
39.99€
1.15€
9. The Darkness II
Similarity 52% 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 #9 position in the best deals for games like Half-Life: Source.
9.0
18,121
1,651
-97%
29.99€
1.07€
10. Duke Nukem 3D: 20th Anniversary World Tour
Similarity 73% 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: Source.
8.2
4,802
882
-97%
19.99€
0.76€
Free games like Half-Life: Source on Steam
Check out this fantastic list of free-to-play games like Half-Life: Source 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: Source.
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 2,275 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Half-Life: Source.
6.9
123,333
53,708
2,275
players
2. Zula Global
Similarity 49% 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 170, this game has secured the #2 spot in the ranking of free games like Half-Life: Source.
6.9
5,310
2,285
170
players
3. America's Army: Proving Grounds
Similarity 49% 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. Thanks to its free to play tag and a daily player base of 132, this game has secured the #3 spot in the ranking of free games like Half-Life: Source.
7.7
8,637
2,315
132
players
4. Hired Ops
Similarity 50% 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. Attracting a solid base of 108 players due to its free access, this strategy game has achieved the #4 position in the best free games like Half-Life: Source.
6.6
10,532
5,109
108
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. The game currently holds the #5 spot among the most played free games like Half-Life: Source.
7.5
4,485
1,326
67
players
6. 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 #6 spot among the most played free games like Half-Life: Source.
8.9
1,717
125
44
players
7. BLOCKADE
Similarity 50% BLOCKADE Classic! First Person Shooter in an editable procedural cubic world. A large arsenal of weapons, 4 teams at the same time and up to 32 players on one map. A large number of game modes! BLOCKADE is a free to play, action and fps game developed and published by Novalink. Released on May 21st 2019 has received 11,459 reviews of which 8,570 were positive and 2,889 were negative resulting in a rating of 7.3 out of 10. The game currently holds the #7 spot among the most played free games like Half-Life: Source.
7.3
8,570
2,889
21
players
8. Classic Marathon
Similarity 54% 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 932 reviews of which 856 were positive and 76 were negative resulting in a rating of 8.7 out of 10. The game currently holds the #8 spot among the most played free games like Half-Life: Source.
8.7
856
76
7
players
9. Shadow Warrior Classic (1997)
Similarity 70% 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: Source.
8.8
1,366
105
5
players
10. Pirate Fighting Simulator
Similarity 50% Pirate Fighting Simulator is a free multiplayer PVP game developed in UE5 in which you fight other players using typical pirate weaponry. Pirate Fighting Simulator is a fps, action and simulation game developed and published by Uncommon UTD. Released on November 13th 2023 has received 824 reviews of which 744 were positive and 80 were negative resulting in a rating of 8.5 out of 10. The game currently holds the #10 spot among the most played free games like Half-Life: Source.
8.5
744
80
5
players