Games like Half-Life: Source on Steam

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Half-Life: Opposing Force Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.

Similarity 95%
Price 4.99€
Rating 9.3
Release 01 Nov 1999
Half-Life: Blue Shift Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

Similarity 95%
Price 4.99€
Rating 9.0
Release 01 Jun 2001
Half-Life 2 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.

Similarity 93%
Price 9.75€
Rating 9.7
Release 16 Nov 2004
STAR WARS™ Dark Forces (Classic, 1995) Behind a veil of secrecy the evil Empire is creating a doomsday army - one that, if finished, will become the final cog in the Empire's arsenal of terror and domination. Your Mission? Join the Rebel Alliance's covert operations division, infiltrate the Empire.

Similarity 89%
Price 5.89€
Rating 8.6
Release 16 Sep 2009
Half-Life Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

Similarity 87%
Price 8.19€
Rating 9.5
Release 19 Nov 1998
Chaser Mars, 2044. The UN establishes MARSCORP (Martian Security and Economics Committee) under the leadership of Samuel Longwood. In the years that follow, the UN gradually loses control of MARSCORP, mainly due to the non-transparent licence policy of its director.

Similarity 87%
Price -92% 0.40€
Rating 6.8
Release 16 Jul 2010
STAR WARS™ Jedi Knight II - Jedi Outcast™ The Legacy of Star Wars Dark Forces™ and Star Wars® Jedi Knight lives on in the intense first-person action of Jedi Outcast.

Similarity 86%
Price 9.75€
Rating 8.8
Release 16 Sep 2009
STAR WARS™ Jedi Knight: Dark Forces II Jedi Knight: Dark Forces II picks up where the award-winning Dark Forces™ game left off...with even more features and firepower in dazzling 3D graphics. As Kyle Katarn, you must acquire a lightsaber and learn the ways of the Force to become a Jedi Knight.

Similarity 85%
Price 5.89€
Rating 7.7
Release 16 Sep 2009
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...

Similarity 85%
Price 2.99€
Rating 6.4
Release 16 Sep 2009
TRON 2.0 Over 35 levels of challenging gameplay -- Race at the speed of light, fight off computer Viruses and engage in violent digital combat.

Similarity 84%
Price -94% 0.65€
Rating 8.5
Release 10 Oct 2014
Quake II You are humanity’s last hope to stop the Strogg, a hostile alien race waging war against Earth. Play this military sci-fi FPS, now upgraded for modern platforms with improved visuals, new campaign content, online multiplayer/co-op, and more.

Similarity 82%
Price -95% 0.55€
Rating 9.3
Release 03 Aug 2007
Black Mesa Relive Half-Life.

Similarity 82%
Price -95% 1.06€
Rating 9.4
Release 06 Mar 2020
Aliens versus Predator Classic 2000 Aliens Versus Predator Classic 2000 features the Colonial Marine, Alien and Predator Campaigns and the frenetic single-player Skirmish mode from the original title: Alien Versus Predator Gold Edition, which was released to massive acclaim in 2000.

Similarity 82%
Price -79% 1.09€
Rating 8.4
Release 15 Jan 2010
Judge Dredd: Dredd vs. Death Welcome to Mega-City One, a city of over 400 million people - every one of them a potential criminal. It is the third decade of the 22nd Century, unemployment is widespread, boredom is universal and only the Judges can prevent total anarchy. Empowered to dispense instant justice, they are Judge, Jury and Executioner all in one.

Similarity 81%
Price -94% 0.55€
Rating 8.3
Release 26 Mar 2009
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.

Similarity 80%
Price -75% 4.99€
Rating 8.3
Release 17 Sep 2008
SiN Episodes: Emergence You are John Blade, commander of HardCorps, an elite security force dedicated to protecting the people of Freeport City. Four years have passed since your first battle with Elexis Sinclaire, a beautiful, brilliant, and ruthless scientist who is out to remake humanity according to her own twisted vision.

Similarity 79%
Price 8.19€
Rating 8.5
Release 10 May 2006
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.

Similarity 78%
Price -69% 3.14€
Rating 8.3
Release 05 Aug 2009
Delta Force 2 You're a member of the U.S. Army's best kept secret: the elite SPECIAL OPERATIONS unit known as Delta Force, formed to BATTLE TERRORISM throughout the world. When the best of the rest can't handle the op, YOU are called into action. Can you handle THE JOB? Features FREE NovaWorld™: online gaming supporting up to 50 players.

Similarity 78%
Price -61% 1.96€
Rating 8.1
Release 18 Jun 2009
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.

Similarity 77%
Price 9.75€
Rating 9.3
Release 08 Jul 2009
Quake 4 As part of the elite Rhino Squad, you must spearhead Earth’s military invasion of a hostile alien homeworld. But, in this desperate war for humanity’s survival against an unrelenting enemy, you may discover that the only way to defeat them...is to become one of them.

Similarity 77%
Price -93% 1.16€
Rating 8.4
Release 04 Aug 2011
Quake Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.

Similarity 76%
Price -75% 2.59€
Rating 9.4
Release 03 Aug 2007
Prospekt Prospekt begins in the Nova Prospekt prison in the Half-Life universe. Gordon Freeman is slowly being overrun by soldiers in the prison, however unknown to him, his Vortigaunt allies manage to find some help from a forgotten hero.

Similarity 76%
Price 4.99€
Rating 6.1
Release 18 Feb 2016
Crysis 2 - Maximum Edition Aliens are decimating New York City, only you have the technology to survive. Be The Weapon.

Similarity 76%
Price -78% 6.77€
Rating 8.3
Release 22 Mar 2011
DOOM 3 A demonic invasion has overwhelmed the Union Aerospace Corporation's Mars research facility. As one of only a few survivors, you must fight your way to hell and back against a horde of demons in this award-winning horror/action FPS and reimagining of the original DOOM.

Similarity 75%
Price -70% 3.09€
Rating 8.4
Release 18 Oct 2012
Strife: Veteran Edition Hailed as the original FPS-RPG game that spawned countless imitators, Strife: Veteran Edition is a love letter to the classic from 1996.

Similarity 75%
Price 9.99€
Rating 8.4
Release 12 Dec 2014
RoboCop: Rogue City Become the legendary part man, part machine, all cop hero and deliver justice in Old Detroit.

Similarity 74%
Price -95% 2.39€
Rating 8.7
Release 02 Nov 2023
Far Cry® A tropical paradise seethes with hidden evil in Far Cry®, a cunningly detailed action shooter that pushes the boundaries of combat to shocking new levels. Freelance mariner Jack Carver is cursing the day he ever came to this island.

Similarity 74%
Price 9.99€
Rating 8.0
Release 01 Apr 2008
Alien Rage - Unlimited 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!

Similarity 73%
Price -96% 0.99€
Rating 6.6
Release 24 Sep 2013
Project: Snowblind Experience the dramatic intensity of the frontlines of a war through the eyes of the first of a new breed of super soldiers in this gritty and epic first-person action game. An augmented super-soldier must stop a renegade regime from eradicating the civilized world. Hong Kong, 2065. 2nd Lt.

Similarity 73%
Price -85% 0.89€
Rating 7.2
Release 29 Mar 2007
Delta Force 1 As a member of Delta Force — The Army's Elite, top secret special forces unit — the word 'impossible' is not in your vocabulary. In Delta Force, you will conduct missions swiftly and silently, in every possible terrain, under every imaginable condition and through unconventional means.

Similarity 73%
Price 4.99€
Rating 8.5
Release 18 Jun 2009
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.

Similarity 73%
Price -95% 1.08€
Rating 8.2
Release 11 Oct 2016
Ricochet A futuristic action game that challenges your agility as well as your aim, Ricochet features one-on-one and team matches played in a variety of futuristic battle arenas.

Similarity 72%
Price 4.99€
Rating 8.0
Release 01 Nov 2000
STAR WARS™ Battlefront (Classic, 2004) Fight the greatest battles in the STAR WARS universe any way you want to. The choice is yours.

Similarity 72%
Price 9.75€
Rating 9.3
Release 01 May 2019
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.

Similarity 72%
Price 9.75€
Rating 7.3
Release 01 May 2006
DOOM 64 Play the enhanced version of the original game released on the Nintendo 64 in 1997. Years have passed since you stopped Hell’s invasion of Earth. Quarantined for humanity’s safety, the UAC research facilities on Mars were abandoned and forgotten...until now.

Similarity 72%
Price -92% 0.43€
Rating 9.1
Release 19 Mar 2020
Turok 2: Seeds of Evil Having defeated the Campaigner, Turok throws the Chronocepter into a waiting volcano to destroy it. Unfortunately the blast awakens an even deadlier force - The Primagen. Once again a Turok is tasked with restoring peace to the land and stopping the Primagen from merging Earth with the nether world.

Similarity 72%
Price -96% 0.94€
Rating 8.7
Release 16 Mar 2017