Half-Life 2 is a 2004 first-person shooter (FPS) game developed and published by Valve Corporation. It was published for Windows on Valve's digital distribution...

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

Half-Life 2: Episode Two is a 2007 first-person shooter game developed and published by Valve. Following Episode One (2006), it is the second of two shorter...

Half-Life 2: Episode One is a 2006 first-person shooter game developed and published by Valve for Windows. It continues the story of Half-Life 2 (2004);...

Half-Life 2: Episode Three is a canceled first-person shooter game developed by Valve. It was planned as the last in a trilogy of episodic games continuing...

and the sequels Half-Life 2 (2004), Half-Life 2: Episode One (2006), Half-Life 2: Episode Two (2007) and Half-Life: Alyx (2020). Half-Life is a first-person...

This is a list of characters in the Half-Life video game series, which comprises Half-Life, Half-Life 2, Half-Life: Alyx, and their respective expansion...

before Half-Life 2 (2004), players control Alyx Vance on a mission to seize a superweapon belonging to the alien Combine. Like previous Half-Life games...

They are encountered throughout Half-Life 2, Half-Life 2: Episode One, and Half-Life 2: Episode Two, as well as Half-Life: Alyx, as hostile non-player characters...

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...

publisher of the original Half-Life, canceled a port for Dreamcast after Sega announced its discontinuation. After releasing Half-Life 2: Episode Two in 2007...

Half-life (symbol t½) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics...

Half-Life 2: Lost Coast is an additional level for the 2004 first-person shooter game Half-Life 2. Developed by Valve, it was released on October 27,...

Half-life is a mathematical and scientific description of exponential or gradual decay. Half-life, half life or halflife may also refer to: Half-Life...

Biological half-life (elimination half-life, pharmacological half-life) is the time taken for concentration of a biological substance (such as a medication)...

five games developed and published by Valve. Two of the games included, Half-Life 2 and its first stand-alone expansion, Episode One; had previously been...

game engine created by Valve for most of their games, including Half-Life, Team Fortress 2, and Portal, as well as licensed to third parties. This list is...

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...

GoldSrc was succeeded by the Source engine with the releases of Half-Life: Source, Half-Life 2, and Counter-Strike: Source in 2004. The basis of GoldSrc is...

those directed by John Woo. Action Half-Life is the second mod in the "Action" series. The first was Action Quake 2 and the third was Action Unreal Tournament...

Half-Life VR but the AI Is Self-Aware (sometimes shortened to Half-Life VR: Self Aware AI and abbreviated HLVR: AI) is a role-playing themed livestream...

Two and a Half Men is an American television sitcom created by Chuck Lorre and Lee Aronsohn that originally aired on CBS from September 22, 2003, to February...

successor to GoldSrc in 2004 with the releases of Half-Life: Source, Counter-Strike: Source, and Half-Life 2. It is most well-known for its usage by Valve...

This is a list of GoldSrc mods (modifications) for the video game Half-Life. Cry of Fear – The spiritual successor of Afraid of Monsters, it puts the...

followed by Half-Life 2 (2004), the episodic sequels Half-Life 2: Episode One (2006) and Episode Two (2007), the multiplayer games Team Fortress 2 (2007) and...

Half-Life: Blue Shift is an expansion pack for the first-person shooter video game Half-Life (1998). It was developed by Gearbox Software and published...

episodes for Half-Life 2 and later packaged those games together with the puzzle game Portal and the multiplayer shooter Team Fortress 2 in a collection...

Half-Life: Echoes is a modification of the first-person shooter video game Half-Life created by British developer James "MrGnang" Coburn and released on...

Half-Life: Opposing Force is an expansion pack for the first-person shooter game Half-Life. It was developed by Gearbox Software and published by Sierra...

ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between...