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As Barney, the player attempts to escape the alien invasion caused by the resonance cascade and the ensuing military cover-up.īlue Shift has now been released via Steam for USD $4.99.
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Like Gearbox's other expansions, Half-Life: Opposing Force and Half-Life: Decay, Blue Shift returns to the setting and timeline of the original story, but with a different player character: the ubiquitous Black Mesa Research Facility security guard Barney Calhoun. Half-Life: Blue Shift, commonly referred to as Blue Shift, is the second stand-alone expansion pack for Half-Life, developed by Gearbox Software and was released on June 12, 2001.
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