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Half-Life (video game)

From Wikipedia, the free encyclopedia
This article is about the video game. For other uses, see Half-Life (disambiguation).

Half-Life
Half-Life Cover Art.jpg
Developer(s)Valve
Publisher(s)Sierra Studios
Valve (digital)
Writer(s)Marc Laidlaw
Composer(s)Kelly Bailey
SeriesHalf-Life
EngineGoldSrc
Platform(s)
Release
November 19, 1998
  • Windows
  • PlayStation 2
    • NA: November 11, 2001
    • EU: November 30, 2001
  • OS X, Linux
    • WW: February 14, 2013
Genre(s)First-person shooter
Mode(s)Single-player, multiplayer

Half-Life is a first-person shooter (FPS) game developed by Valve and published by Sierra Studios for Windows in 1998. It was Valve's debut product and the first game in the Half-Life series. Players assume the role of Gordon Freeman, a scientist who must escape the Black Mesa Research Facility after it is invaded by aliens. The core gameplay consists of fighting alien and human enemies with a variety of weapons and solving puzzles.

Unlike many other games at the time, the player has almost uninterrupted control of the player character, and the story is told mostly through scripted sequences seen through his eyes. Valve co-founder Gabe Newell said the team were disappointed with the lack of exploration in the FPS genre, and aimed to create an immersive world rather than a "shooting gallery". They developed using GoldSrc, a heavily modified version of the Quake engine, licensed from id Software. Science fiction novelist Marc Laidlaw was hired to shape the story and assist design.

Half-Life received acclaim for its graphics, realistic gameplay and seamless narrative. It won over 50 PC "Game of the Year" awards and is considered one of the most influential FPS games and one of the best video games ever made. By 2008, it had sold over 9 million copies. It was followed by the expansion packs Opposing Force (1999) and Blue Shift (2001), developed by Gearbox Software. It was ported to the PlayStation 2 in 2001, along with another expansion Half-Life: Decay, and to macOS and Linux in 2013. Valve ported Half-Life to its Source engine in 2004, while a third-party remake, Black Mesa, was released in 2020.

Half-Life inspired numerous fan-made mods, some of which became standalone games, such as Counter-Strike, Day of Defeat and Sven Co-op. The story continued with Half-Life 2 in 2004, followed by Half-Life 2: Episode One (2006), Episode Two (2007), and Half-Life: Alyx (2020).

Gameplay[]

In this scene, the player must bypass a dam reservoir guarded by an AH-64 Apache attack helicopter, a squad of marines, and a gun emplacement.

Half-Life is a first-person shooter that requires the player to perform combat tasks and puzzle solving to advance through the game. Unlike most of its peers at the time, Half-Life uses scripted sequences, such as a Vortigaunt ramming down a door, to advance major plot points. Compared to most first-person shooters of the time, which relied on cut-scene intermissions to detail their plotlines, Half-Life's story is told mostly using scripted sequences (bar one short cutscene), keeping the player in control of the first-person viewpoint. In line with this, the player rarely loses the ability to control the player character, who never speaks and is never actually seen in the game; the player sees "through his eyes" for the entire length of the game. Half-Life has no "levels"; it instead divides the game into chapters, whose titles flash on the screen as the player moves through the game. Progress through the world is continuous, except for short pauses for loading.[3]

The game regularly integrates puzzles, such as navigating a maze of conveyor belts or using nearby boxes to build a small staircase to the next area the player must travel to. Some puzzles involve using the environment to kill an enemy, like turning a valve to spray hot steam at their enemies. There are few bosses in the conventional sense, where the player defeats a superior opponent by direct confrontation. Instead, such organisms occasionally define chapters, and the player is generally expected to use the terrain, rather than firepower, to kill the boss. Late in the game, the player receives a "long jump module" for the HEV suit, which allows the player to increase the horizontal distance and speed of jumps by crouching before jumping. The player must rely on this ability to navigate various platformer-style jumping puzzles in Xen toward the end of the game.[3]

For the most part, the player battles through the game alone, but is occasionally assisted by non-player characters; specifically security guards and scientists who help the player; the guards will fight alongside the player, and both guards and scientists can assist in reaching new areas and impart relevant plot information. An array of alien enemies populate the game, including headcrabs, bullsquids, and headcrab zombies. The player also faces human opponents including the Hazardous Environment Combat Unit (HECU) Marines and black ops assassins.[citation needed]

Half-Life includes online multiplayer support for both individual and team-based deathmatch modes.[2]

Plot[]

Theoretical physicist Gordon Freeman arrives late for work at the Black Mesa Research Facility. As part of an experiment, he pushes an unusual material into a machine, called the anti-mass spectrometer, for analysis. The spectrometer explodes, creating a "resonance cascade" that severely damages the facility and opens a portal to another dimension, Xen. Surviving scientists urge Gordon to head to the surface, where he defends himself against hostile Xen creatures and the HECU (Hazardous Environment Combat Unit), a special unit of United States Marines sent to cover up the incident by killing all of the hostile aliens and any Black Mesa personnel they find.

Heading to the surface, Gordon learns that scientists from the Lambda Complex may have found a way to close the portal. Gordon travels to the other end of the facility to assist them. Along the way, he activates a rocket engine test facility to destroy a giant tentacled creature and uses a disused railway system to reach and launch a satellite rocket. After he is captured by marines and left for dead in a garbage compactor, he escapes and makes his way to an older part of the facility. There, he discovers Xen specimens collected before the incident. Overwhelmed by the alien forces, the HECU Marines pull out of Black Mesa and begin airstrikes. Scaling cliffs, navigating destroyed buildings, and traversing through underground water channels, Gordon arrives at the Lambda Complex, where scientists learn the portal is being forced open on the other side by an immensely powerful entity. They have developed teleportation technology that allows Gordon to travel to Xen, where he is tasked to stop the entity.

In Xen, Gordon encounters the remains of researchers who ventured there before him and defeats the Gonarch, a huge egg-laying headcrab. At a factory creating alien soldiers, he enters a portal that sends him to a vast cave. There, Gordon confronts the Nihilanth, the entity maintaining the rift, and destroys it. Gordon is summoned by the mysterious G-Man, who has been watching his progress in Black Mesa and praises him. The G-Man explains his "employers" wish to employ Gordon. If Gordon refuses, he is teleported to an area full of alien soldiers to be killed immediately. If Gordon accepts, the G-Man congratulates him and places him into stasis to await his next assignment.

Development[]

Half-Life in many ways was a reactionary response to the trivialization of the experience of the first-person genre. Many of us had fallen in love with video games because of the phenomenological possibilities of the field and felt like the industry was reducing the experiences to least common denominators rather than exploring those possibilities. Our hope was that building worlds and characters would be more compelling than building shooting galleries.

—Valve president Gabe Newell[4]

Valve, based in Kirkland, Washington, was founded in 1996 by former Microsoft employees Mike Harrington and Gabe Newell.[5] For its first product, Valve settled on a concept for a horror first-person shooter (FPS) game using the Quake engine licensed from id Software.[6] Gabe Newell has stated that the GoldSrc engine was built by picking and choosing from the source code to the original DOS Quake, Win Quake, GL Quake, Quake World, Quake II, and all of the various patches,[7] though developer Ken Birdwell noted it is fundamentally just a heavily modified Quake 1 engine.[8] Valve implemented a lot of their own sub-systems (animation, AI, GL and software renderer),[7] adding skeletal animation and Direct3D support,[5] and as a result about 75% of the new engine's code was their own.[7] Valve was also developing a fantasy role-playing game, Prospero; as the Half-Life project grew, it absorbed the Prospero team and Prospero was cancelled.[9]

Half-Life was inspired by FPS games Doom (1993) and Quake (1996), Stephen King's 1980 novella The Mist, and a 1963 episode of The Outer Limits titled "The Borderland".[10] According to designer Harry Teasley, Doom was a major influence, and the team wanted Half-Life to "scare you like Doom did". The project had the working title Quiver, after the Arrowhead military base from The Mist.[11] The name Half-Life was chosen because it was evocative of the theme, not clichéd, and had a corresponding visual symbol: the Greek letter λ (lower-case lambda), which represents the decay constant in the half-life equation.[10] According to designer Brett Johnson, the level design was inspired by environments in the manga series Akira.[12]

Valve struggled to find a publisher, as many believed the game was too ambitious for a first-time developer. Sierra On-Line signed Valve for a one-game deal as it was interested in making a 3D action game, especially one based on the Quake engine.[13] Valve first showed Half-Life in early 1997; it was a success at E3 that year, where Valve demonstrated the animation and artificial intelligence.[14] Novel features of the artificial intelligence included fear and pack behavior.[15]

Valve aimed for a November 1997 release to compete with Quake II.[16][17] By September 1997, the team found that while they had built some innovative aspects in weapons, enemies, and level design, the game was not fun and there was little design cohesion.[16] The company postponed the release and reworked every level. They took a novel approach of assigning a small team to build a prototype level containing every element in the game and then spent a month iterating on the level.[16] When the rest of the team played the level, which designer Ken Birdwell described as "Die Hard meets Evil Dead", they agreed to use it as a baseline.[16] The team developed three theories about what made the level fun. First, it had several interesting things happen in it, all triggered by the player rather than a timer, so that the player would set the pace of the level. Second, the level responded to any player action, even for something as simple as adding graphic decals to wall textures to show a bullet impact. Finally, the level warned the player of imminent danger to allow them to avoid it, rather than killing the player with no warning.[16]

To move forward with this unified design, Valve sought a game designer but found no one suitable. Instead, Valve created the "cabal", initially a group of six individuals from across all departments that worked primarily for six months straight in six-hour meetings four days a week. The cabal was responsible for all elements of design, including level layouts, key events, enemy designs, narrative, and the introduction of gameplay elements relative to the story.[16] The collaboration proved successful, and once the cabal had come to decisions on types of gameplay elements that would be needed, mini-cabals from other departments most affected by the choice were formed to implement these elements. Membership in the main cabal rotated since the required commitment created burnout.[16]

The cabal produced a 200-page design document detailing nearly every aspect of the game. They also produced a 30-page document for the narrative, and hired science fiction novelist Marc Laidlaw to help manage the script.[11][16] Laidlaw said his contribution was to add "old storytelling tricks" to the team's ambitious designs: "I was in awe of [the team]. It felt to me like I was just borrowing from old standards while they were the ones doing something truly new."[18] Rather than dictate narrative elements "from some kind of ivory tower of authorial inspiration", he worked with the team to improvise ideas, and was inspired by their experiments.[18] For example, he conceived the opening train ride after an engineer implemented train code for another concept.[18]

Within a month of the cabal's formation, the other team members started detailed game development, and within another month began playtesting through Sierra. The cabal was intimately involved with playtesting, monitoring the player but otherwise not interacting. They noted any confusion or inability to solve a game's puzzles and made them into action items to be fixed on the next iteration. Later, with most of the main adjustments made, the team included means to benchmark players' actions which they then collected and interpreted statistically to fine-tune levels further.[16] Between the cabal and playtesting, Valve identified and removed parts that proved unenjoyable. Birdwell said that while there were struggles at first, the cabal approach was critical for Half-Life's success, and was reused for Team Fortress 2 from the start.[16]

Much of the detail of Half-Life's development has been lost; according to employee Erik Johnson, two or three months before release, their Visual SourceSafe source control system "exploded"; logs of technical changes from before the final month of development were lost, and code had to be recovered from individual computers.[19]

Release[]

Half-Life was released in November 1998.[20] The revised version of Half-Life shown at E3 1998 was given Game Critics Awards for "Best PC Game" and "Best Action Game".[17] Valve released two demos for Half-Life. The first, Half-Life: Day One, contained the first fifth of the game and was distributed with certain graphic cards. The second demo, Half-Life: Uplink, was released on February 12, 1999, and featured original content.[21] A short film based on Half-Life, also titled Half-Life: Uplink, was developed by Cruise Control, a British marketing agency, and released on February 11, 1999.[22] The film's protagonist is a journalist who infiltrates the Black Mesa Research Facility, trying to discover what has happened there.[23]

Half-Life was heavily censored for its German release as to comply with the Federal Department for Media Harmful to Young Persons (BPjM by its German abbreviation). Newell had stated at the time of Half-Life's release that to comply with the BPjM's regulations on violence against humans, they had to replace all the humans in the game with robots, replacing any blood with oil and body parts with gears, among other changes. This allowed for the game to be released but was placed on a list maintained by BPjM that prevent sales of the game to anyone under 18 years old. In 2017, BPjM removed Half-Life from its list, and to acknowledge this, Valve released Half-Life Uncensored, free downloadable content for those in Germany to patch Half-Life and revert these changes.[24]

Ports[]

Captivation Digital Laboratories and Gearbox Software developed a port of Half-Life for the Dreamcast console, with new character models and textures and an exclusive expansion, Blue Shift.[25] Following the cancellations of several third-party Dreamcast games, Sierra canceled the port weeks before its scheduled release in June 2001, citing "changing marketing conditions".[26] Blue Shift was ported to Windows.[27] The Dreamcast port became the basis of the Half-Life port for PlayStation 2, released in late 2001. This version added competitive play and a co-op expansion, Half-Life: Decay.[28] A late build of the Dreamcast version was eventually leaked onto the internet.[26]

A version of Half-Life for Mac OS 9, ported by Logicware, was announced but never released.[29] On January 29, 2013, Valve released beta versions of ports for OS X and Linux.[30] Valve finalized them on February 14, 2013.[31]

Media[]

Expansions[]

Main articles: Half-Life: Opposing Force, Half-Life: Blue Shift, and Half-Life: Decay

Two expansion packs by outside developer Gearbox Software have been released for the PC version: Half-Life: Opposing Force (1999) and Half-Life: Blue Shift (2001). The former returns the player to Black Mesa during the events of Half-Life's storyline, but this time from the perspective of Adrian Shephard, one of the Marines in the Hazardous Environment Combat Unit sent to cover up evidence of the incident. It introduced several new weapons, new non-player characters, both friendly and hostile and new, previously unseen areas of the facility.

Blue Shift returns the player to Half-Life's Black Mesa timeline once more, this time as Barney Calhoun, one of the facility's security guards. The expansion was initially developed as a bonus mission for the canceled Dreamcast version. Blue Shift came with the High Definition pack, that gave the player the option to update the look of Half-Life, Opposing Force, and the new Blue Shift content.

Decay was another expansion by Gearbox, released only as an extra with the PlayStation 2 version of Half-Life. The add-on featured co-operative gameplay in which two players could solve puzzles or fight against the many foes in the Half-Life universe.

In 2000, a compilation pack, Half-Life: Platinum Pack, was released, including (with their respective manuals) Half-Life, Counter-Strike, Team Fortress Classic, Half-Life: Opposing Force. In 2002, the pack was re-released under the new titles Half-Life Platinum Collection[32] and Half-Life: Generation.[33] These new iterations also included the Half-Life: Blue Shift expansion pack; though if registered on Steam, Day of Defeat, as well as Ricochet and Deathmatch Classic were also included. In 2005, Half-Life 1: Anthology was released, containing Steam-only versions of the following games on a single DVD: Half-Life, Half-Life: Opposing Force, Half-Life: Blue Shift, and Team Fortress Classic.[34]

Remakes[]

To experience firsthand the processes mod-makers would have to go through with the new engine, Valve ported Half-Life (dubbed Half-Life: Source) and Counter-Strike to their new Source engine. Half-Life: Source is a straight port, lacking any new content or the Blue Shift High Definition pack. However, it does take advantage of vertex and pixel shaders for more realistic water effects, as well as Half-Life 2's realistic physics engine. They also added several other features from Half-Life 2, including improved dynamic lightmaps, vertex maps, ragdolls, and a shadowmap system with cleaner, higher resolution, specular texture and normal maps, as well as utilization of the render-to-texture soft shadows found in Half-Life 2's Source engine, along with 3D skybox replacements in place of the old 16-bit color prerendered bitmap skies. The Half-Life port possesses many of the Source engine's graphical strengths as well as control weaknesses that have been noted in the Source engine. Later updates added a field of view option, support for OS X and Linux, an optional high-definition texture pack, among other improvements.[35] Half-Life: Source is available with special editions of Half-Life 2, or separately on Steam.[36] Half-Life Deathmatch: Source, the multiplayer portion of the original game, much in the same fashion as the earlier released Half-Life: Source, was released in July 2005.[37]

Half-Life: Source had been criticized for not fully using many of the features of the Source engine found in Half-Life 2, as it still uses textures and models from the original game. There were also a large variety of bugs, ranging from scientists floating above their chairs, to the ability to skip large sections of chapters in the game. In response to this, a third-party mod remake called Black Mesa was developed with Valve's approval.[38] Black Mesa, a fan-made remake of Half-Life utilizing the Source engine, began development in 2005[39] and was released as a free download on September 14, 2012, lacking only the final Xen chapter.[40][41] The Xen portion was held back until December 2019 as the project team wanted to revamp this to try to address how the original Xen was poorly received compared to the rest of the game.[42][43][44] The free 2007 Source SDK base is needed to run the game. Black Mesa is also distributed via Steam; the remake was among the first ten games whose release on the platform was approved using Valve's crowd voting service Steam Greenlight.[45] The Steam version of "Black Mesa", called "Black Mesa: Definitive Edition" is very different compared to it's original 2012 release, featuring brand new menus, Steam Workshop compatibility (allowing community content, such as weapon replacements, to be more easily found), and more. A separate effort, Project Lambda, is attempting to recreate Half-Life in the Unreal Engine, allowing the game to support more advanced graphic features.[46]

Sequels[]

Half-Life 2 was announced at E3 2003 and released in 2004. The player controls Freeman 20 years after the Black Mesa incident in the dystopic City 17, where he joins a rebellion against an alien regime. It was followed by the episodic games Half-Life 2: Episode One (2006) and Half-Life 2: Episode Two (2007).[47] Another sequel, Half-Life: Alyx, was released in 2020.[48]

Reception[]

Sales[]

According to Newell, Half-Life was budgeted with the expectation of lifetime sales around 180,000 units.[49] However, following its November 19 release,[50] the game became a surprise hit.[49] In the United States, Half-Life debuted at #8 on PC Data's weekly computer game sales chart for the November 15–21 period, with an average retail price (ARP) of $49.[51] It rose to sixth place the following week,[52] before dropping to position 10 for the week ending December 5.[53] During the December 6–12 period, the game climbed back to sixth place; by this time, its ARP had dropped to $36.[54] It placed between sixth and eighth on PC Data's weekly charts through the end of December,[55][56][57] and its ARP rose back to $45 by the week ending January 2.[57] PC Data declared Half-Life November's sixth-best-selling computer game in the United States,[58] a position it held for the month of December.[59] While its US sales were below 100,000 copies by November 30,[50] by 1999 it had sold 212,173 copies and earned revenues of $8.6 million in the United States by the end of 1998.[60]

In January 1999, Half-Life debuted at #3 on Chart-Track's computer game sales rankings for the United Kingdom,[61] and remained in PC Data's weekly top 10 for the entire month, peaking at #4.[62][63][64][65][66] By January 19, after two full months of availability, global sales of Half-Life surpassed 500,000 units.[49] In the United States, it was the fifth-best-selling computer game for the month of January.[67] On PC Data's weekly charts, it rose to #2 from February 7–20, with an ARP of $35.[68][69] Holding a position in the weekly top 10 for the rest of February,[69][70] it climbed to fourth for the month.[71] The game remained in PC Data's weekly top 10 until the week of March 21[72][73] and dropped to position 11 for March as a whole.[74] In the United Kingdom, it placed second in February—behind the debut of Baldur's Gate—and fifth in March.[75][76] In April, it claimed #3 on Chart-Track's rankings and dropped to #16 on those of PC Data.[76][77] On April 23, Sierra announced that global sales of Half-Life had reached almost 1 million copies.[78]

After maintaining the 16th place for May in the US,[79] Half-Life exited PC Data's monthly top 20 in June.[80] Half-Life became the fifth-bestselling computer game of the first half of 1999 in the US.[81] Its domestic sales during 1999 reached 290,000 copies by the end of September.[82] During 1999, it was the fifth best-selling computer game in the US, with sales of 445,123 copies. These sales brought in revenues of $16.6 million, the sixth-highest gross that year for a computer game in the US.[83] The following year, it was the 16th best-selling computer game in the US, selling another 286,593 copies and earning $8.98 million.[84]

The PlayStation 2 version received a "Silver" sales award from the Entertainment and Leisure Software Publishers Association (ELSPA),[85] indicating sales of at least 100,000 copies in the United Kingdom.[86] Half-Life's global sales reached 2.5 million units by July 2001.[87] Edge noted in 2003 that "a significant number of the 7.5m copies of the PC version were bought because the game offered such potential for community-driven expansion".[88] As of November 16, 2004, eight million copies of the game had been sold,[89] by 2008, 9.3 million copies had been sold at retail.[90] Guinness World Records awarded Half-Life the world record for Best-Selling First-Person Shooter of All Time (PC) in the Guinness World Records: Gamer's Edition 2008.

Reviews[]

Half-Life has a score of 96 out of 100 on aggregate review website Metacritic. Computer Gaming World's Jeff Green said that the game "is not just one of the best games of the year. It's one of the best games of any year, an instant classic that is miles better than any of its immediate competition, and – in its single-player form – is the best shooter since the original Doom".[94] IGN described it as "a tour de force in game design, the definitive single player game in a first-person shooter".[2] GameSpot claimed that it was the "closest thing to a revolutionary step the genre has ever taken".[96]

Next Generation reviewed the PC version of the game, rating it five stars out of five, and stated that "It is fast paced, it is dramatic, and it brings the very idea of adventure on a PC out of the dark ages and into a 3D world. All that and not a single Orc in sight."[97]

Several reviewers cited the level of immersion and interactivity as revolutionary.[93] AllGame said, "It isn't everyday that you come across a game that totally revolutionizes an entire genre, but Half-Life has done just that."[93] Hot Games commented on the realism, and how the environment "all adds up to a totally immersive gaming experience that makes everything else look quite shoddy in comparison".[99] Gamers Depot found the game engaging, stating that they have "yet to play a more immersive game period".[100] The Electric Playground said that Half-Life was an "immersive and engaging entertainment experience", but noted that this only lasted for the first half of the game, explaining that the game "peaked too soon".[101]

The final portion of the game, taking place in the alien world of Xen, was generally considered the weakest. Besides introducing a wholly new and alien setting, it also featured a number of low-gravity jumping puzzles. The GoldSrc engine did not provide as much precise control for the player during jumping, making these jumps difficult and often with Freeman falling into a void and the player restarting the game.[102][103] Wired's Julie Muncy called the Xen sequence "an abbreviated, unpleasant stop on an alien world with bad platforming and a boss fight against what appeared, by all accounts, to be a giant floating infant".[104]

During the 2nd Annual AIAS Interactive Achievement Awards (now known as the D.I.C.E. Awards), Half-Life won the awards for "Computer Game of the Year" and "Computer Action Game of the Year", along with nominations for "Game of the Year", "Outstanding Achievement in Art/Graphics", "Outstanding Achievement in Character or Story Development", "Outstanding Achievement in Interactive Design" and "Outstanding Achievement in Software Engineering".[105]

Jeff Lundrigan reviewed the PlayStation 2 version of the game for Next Generation, rating it three stars out of five, and stated that "It may be getting old, but there's still a surprising amount of life in Half-Life".[98] the PlayStation 2 version of Half-Life was a nominee for The Electric Playground's 2001 Blister Awards for "Best Console Shooter Game", but lost to Halo: Combat Evolved for Xbox.[106]

In the November 1999, October 2001, and April 2005 issues of PC Gamer, Half-Life was named Best Game of All Time/Best PC Game Ever. In 2004, GameSpy held a Title Fight, in which readers voted on what they thought was the greatest game of all time, and Half-Life was the overall winner of the survey.[107] Gamasutra gave it their Quantum Leap Award in the FPS category in 2006.[108] GameSpot inducted Half-Life into their Greatest Games of All Time list in May 2007.[109] In 2007, IGN described Half-Life as one of the most influential video games,[110] and in 2013 wrote that the history of the FPS genre "breaks down pretty cleanly into pre-Half-Life and post-Half-Life eras".[111] In 2021 the Guardian ranked Half-Life the third greatest video game of the 1990s, writing that "Valve’s masterpiece of a first-person shooter helped write the rulebook for how games tell their stories without resorting to aping the conventions of film".[112]

Legacy[]

Further information: Counter-Strike (video game), Counter-Strike: Condition Zero, Day of Defeat, Gunman Chronicles, Sven Co-op, Team Fortress Classic, and List of GoldSrc mods

Half-Life saw fervent support from independent game developers, due in no small part to support and encouragement from Valve. Worldcraft, the level-design tool used during the game's development, was included with the game software. Printed materials accompanying the game indicated Worldcraft's eventual release as a retail product, but those plans never materialized. Valve also released a software development kit, enabling developers to modify the game and create mods. Both tools were significantly updated with the release of the version 1.1.0.0 patch. Supporting tools (including texture editors, model editors, and level editors such as the multiple engine editor QuArK) were either created or updated to work with Half-Life.

The Half-Life software development kit served as the development base for many multiplayer mods, including the Valve-developed Team Fortress Classic and Deathmatch Classic (a remake of Quake's multiplayer deathmatch mode in the GoldSrc engine).[113] Other mods such as Counter-Strike and Day of Defeat (DOD) began life as the work of independent developers (self-termed "modders") who later received aid from Valve. Other multiplayer mods include Action Half-Life, Firearms, Science and Industry, The Specialists, Pirates, Vikings and Knights, Natural Selection and Sven Co-op.

Numerous single-player mods have also been created. Notable examples include USS Darkstar (1999, a futuristic action-adventure on board a zoological research spaceship), They Hunger (2000–2001, a survival horror total conversion trilogy involving zombies), Poke646 (2001, a follow-up to the original Half-Life story with improved graphics), and Someplace Else (2002, a side-story to the original Half-Life).

In 2003, Valve's network was infiltrated by hackers. Among the files that were stolen included an unreleased Half-Life modification: Half-Life: Threewave, a canceled remake of the mod Threewave CTF from Quake. The files were later found by independent reporter Tyler McVicker of Valve News Network on a Vietnamese FTP server in February 2016, and were unofficially released to the public in September 2016.[114]

Some Half-Life modifications eventually landed on retail shelves. Counter-Strike was the most successful, having been released in six different editions: as a standalone product (2000), as part of the Platinum Pack (2000), as an Xbox version (2003), and as a single-player spin-off titled Counter-Strike: Condition Zero (2004), as well as in two versions using the Source engine. Team Fortress Classic, Day of Defeat, Gunman Chronicles (2000, a futuristic Western movie-style total conversion with emphasis on its single-player mode) and Sven Co-op were also released as standalone products. Half-Life is also the subject of the YouTube improv roleplaying series Half-Life VR but the AI is Self-Aware and Freeman's Mind.[115][116][117]

References[]

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