22 Half Life (series)

Half-Life is a series of first-person shooter (FPS) games developed and published by Valve. The games combine shooting combat, puzzles and storytelling.

Half-Life: Blue Shift is an expansion pack for the first-person shooter video game Half-Life (1998). It was developed by Gearbox Software with Valve and published by Sierra On-Line. Blue Shift was the second expansion for Half-Life, originally intended as part of a Dreamcast port of Half-Life. Although the Dreamcast port was cancelled, the Windows version was released as a standalone product on June 12, 2001 for Windows. It was released on Steam on August 24, 2005.

Black Mesa is a first-person shooter game developed and published by Crowbar Collective. It is a third-party remake of Half-Life (1998) made in the Source game engine. Originally published as a free mod in September 2012, Black Mesa was approved by Half-Life developers Valve for a commercial release; the first commercial version was published as an early-access version in May 2015, followed by a full release in March 2020 for Windows and Linux.

Concerned: The Half-Life and Death of Gordon Frohman is a webcomic authored by Christopher C. Livingston, parodying the first-person shooter video game Half-Life 2. The comic consists of game screenshots, with characters posed using Garry's Mod, a tool which facilitates manipulation of the Source engine used by Half-Life 2. The first issue was launched on May 1, 2005. The comic completed its run on November 6, 2006 with a total of 205 issues.

Half-Life: Decay is a multiplayer-only expansion pack for Valve's first-person shooter Half-Life. Developed by Gearbox Software and published by Sierra On-Line, Decay was released as part of the PlayStation 2 version of Half-Life in 2001. It is the third expansion pack for Half-Life, and like its predecessors, Decay returns to the setting and timeline of the original story, albeit portraying the story from the viewpoint of a different set of protagonists: two female scientists working in the Black Mesa Research Facility. Decay is a cooperative multiplayer game, designed to be played by two people working together to pass through the game's levels.

Half-Life 2: Episode Two is a 2007 first-person shooter game developed and published by Valve. Following Episode One (2006), it was the second in a planned trilogy of shorter episodic games that continue the story of Half-Life 2 (2004).

Freeman's Mind is a machinima series created by Ross Scott using the Source remake of the 1998 video game Half-Life. It follows the protagonist of the game, Gordon Freeman, also voiced by Scott, who acts as a combination of narrator and running commentary, often criticizing and satirizing the game world's conventions in a style similar to that in Mystery Science Theater 3000. The series ran from 2007 to 2014 and consists of 71 episodes. A sequel series, titled Freeman's Mind 2, debuted in 2017, and is ongoing with 16 episodes in total.

A gravity gun is a type of device in video games, particularly first-person shooters using physics engines, whereby players can directly manipulate objects in the world, often allowing them to be used as projectiles against hostile characters. The concept was popularized by the gravity gun found in Valve's Half-Life 2, as well as the Temporal Uplink found in Free Radical Design's TimeSplitters: Future Perfect; although a similar concept was used by id Software during the production of the earlier game Doom 3, eventually leading to the introduction of a physics-based weapon in the expansion pack Resurrection of Evil. Later games, such as Portal, BioShock, Crysis, and Dead Space, have been influenced by the success of these physics-based weapons, adopting their own styles of comparable abilities or weapons.

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.

Half-Life 2 is a 2004 first-person shooter game developed and published by Valve. Like the original Half-Life (1998), it combines shooting, puzzles, and storytelling, and adds features such as vehicles and physics-based gameplay. Set roughly twenty years after the events of the first game, players control Gordon Freeman as he joins a resistance movement to liberate the Earth from the control of an alien empire called the Combine.

Half-Life 2: Deathmatch is a multiplayer first-person shooter video game developed by Valve. Released on Steam on November 30, 2004, it uses many of the assets from Half-Life 2 and its Source engine. It features new levels, optimized for multiplayer arena play, and a few new weapons. Also included are portions of the game's source code, which were the basis for many early Source-based multiplayer modifications. The game is the successor to the popular multiplayer component of the original Half-Life, but is offered as a separate product from Half-Life 2. Deathmatch, like Half-Life's multiplayer, does not develop any part of the plot or story of the Half-Life series.

Half-Life 2: Episode One is a 2006 first-person shooter game developed and published by Valve. Like previous Half-Life games, it combines shooting, puzzle-solving, and narrative. Players control scientist Gordon Freeman, who, alongside his companion Alyx Vance, must escape City 17 before an explosion destroys it.

Half-Life VR but the AI is Self-Aware is a role-playing themed livestream and Machinima series staged within a virtual reality Garry's Mod recreation of the video game Half-Life. The series, live streamed to Twitch with highlights later uploaded to YouTube, follows Gordon Freeman accompanied by the Science Team as they traverse (loosely) the events of the original Half-Life game.

Half-Life: Alyx is a 2020 virtual reality (VR) first-person shooter developed and published by Valve. It was released for Windows in March 2020 and Linux in May 2020, with support for most PC-compatible VR headsets.

Half-Life: C.A.G.E.D. is a game modification of Half-Life by Cayle George and Future Games Select released on September 21, 2017. Made using the GoldSrc engine, the mod includes a single-player campaign in which the player must escape from a closely guarded prison.

Half-Life: Echoes is a game modification of Half-Life created by British developer James "MrGnang" Coburn, released on August 10, 2018. The mod was under development for four years and uses the GoldSrc engine.

Half-Life: Escape from City 17 is a two-part Canadian short film written, developed, and filmed by the Purchase Brothers. The film is set in the Half-Life universe, during the events of Half-Life 2 and Half-Life 2: Episode One. Both films were critically acclaimed. Part One was released on February 13, 2009; and Part Two was released on August 24, 2011.

Hunt Down the Freeman is a 2018 first-person shooter video game. Developed by Royal Rudius Entertainment, it is an independently developed unofficial installment to the Half-Life franchise.

Half-Life 2: Lost Coast is an additional level for the 2004 first-person shooter video game Half-Life 2. Developed by Valve, it was released on October 27, 2005, through the Steam content delivery service as a free download to owners of the Windows version of Half-Life 2. Lost Coast serves as a technology demonstration, specifically showcasing the high-dynamic-range rendering implemented in the Source engine. The level was designed with a variety of appropriate environments to emphasize these effects. Lost Coast was the first video game developed by Valve to allow developers to explain various elements of design as the player progresses through the level.

This is a list of GoldSrc mods (modifications) for the video game Half-Life.

Half-Life: Opposing Force is an expansion pack for the first-person shooter game Half-Life. The game was developed by Gearbox Software and Valve and published by Sierra On-Line for Windows on November 19, 1999. Opposing Force was the first expansion for Half-Life and was announced in April 1999. Lead designer Randy Pitchford noted that he believed Gearbox was selected to develop Opposing Force because Valve, the creators of Half-Life, wanted to concentrate on their future projects. Over the course of development, Gearbox brought in a variety of talent from other areas of the video games industry to help bolster various aspects of design.

The Orange Box is a video game compilation containing five games developed by Valve. Two of the games included, Half-Life 2 and its first stand-alone expansion, Episode One, had previously been released as separate products. Three new games were also included in the compilation: the second stand-alone expansion, Half-Life 2: Episode Two, the puzzle game Portal, and Team Fortress 2, the multiplayer game sequel to Team Fortress Classic. Valve also released a soundtrack containing music from the games within the compilation. A separate product entitled The Black Box was planned, which would have included only the new games, but was later canceled.