Half-Life (video game)

Half-Life
Developer(s)	Valve Corporation
Publisher(s)	Sierra Entertainment (CD-ROM) Valve Corporation (Steam)
Composer(s)	Kelly Bailey
Series	Half-Life
Engine	GoldSrc (GoldSource, Previously Named Half-Life Engine)
Platform(s)	Linux macOS Microsoft Windows PlayStation 2
Release	November 8, 1998
Genre(s)	First-person shooter science fiction video game
Mode(s)	Singleplayer/Multiplayer

Half-Life is a science fiction first-person shooter computer game developed by Valve Software and published by Sierra Entertainment in 1998, based on a very changed Quake game engine. It was first published for PCs running Microsoft Windows, and was later ported to Sony's PlayStation 2 video game console. A port for the Dreamcast was planned, but was cancelled. It is the first game in the Half-Life series.

Half-Life, often shortened to HL, has been thought to be very great by computer game critics for its gripping in-depth storyline, which has influenced the development of many other first-person shooters after it. It became very popular after it was released and still has many fans.

The name and logo reference the science term half-life, which is represented by the Greek letter lambda.