• Oyunun Adı : Half-Life: Blue Shift
• Yapımcısı : Gearbox Software
• Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

DLC