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Half-Life is a software product developed by Valve Corporation and published by Sierra Entertainment. The game falls under the first-person shooter genre and is named after the scientific term "half-life". Half-Life was initially published on November 19, 1998 and is a part of the larger video game, software, and gaming industries.
The game has been released on multiple platforms, including Microsoft Windows, MacOS, Linux, and PlayStation 2. Half-Life's business model falls under the domain of commerce.
Some of Half-Life's competitors within the video game industry include The Sims, Mass Effect, Saints Row IV, Garry's Mod, and Cuphead.