Lets talk about Half-Life: Blue Shift PC

Half-Life: Blue Shift allows fans of the franchise to explore areas of the
Black Mesa Research Facility where even Gordon Freeman never gained access.
Half-Life: Blue Shift is a stand-alone product that does not require
Half-Life to play. Exclusively in North America, Blue Shift will be sold
with a full version of Half-Life: Opposing Force, winner of the Academy of
Interactive Arts and Sciences Action Game of the Year Award. North American
owners of Half-Life: Opposing Force will be eligible for a $10 mail-in
rebate.

Half-Life combines great storytelling with intense action and advanced
technology to create an impressive, realistic world where players need to
think smart to survive.