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Half-Life: Uplink is a demo version of Valve Software's 1998 first-person shooter computer game Half-Life, released on February 12, 1999. Uplink features many of the common enemies, characters, and weapons from the full game, but unlike the first Half-Life demo (Half-Life: Day One) and the Half-Life 2 demo, the location and scenario in this demonstration do not appear in Half-Life. Day One is an OEM version that features roughly the first fifth of the entire game. The Half-Life 2 demo features one chapter and the first level taken directly from the game. Like its successor's demo, however, Uplink was made available for download after the release of the full retail version of the game.The Uplink chapters were cut during Half-Life's development phase, and roughly fit in prior to or during the Lambda Core chapter. They were, however, strongly revised for the demo release. Uplink also includes the same Hazard Course from the full release of Half-Life.Do remember that this is a stand alone demo, which doesn't need and cannot be run through Steam at all

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