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.
Blue Shift casts you in the role of Barney Calhoun, a security guard at Black Mesa. It starts right around the beginning of the original Half-Life (you play as the security guard that's locked out of the door you see in the tram scene in the original HL), and has you running through the day to day of a Black Mesa guard. Blue Shift includes with it the High-Definition patch, which upgrades the visuals. I personally don't like it but it is just my opinion! One of the amusing things I find about this game, is that if you decide to run through the Hazard Course, instead of the female scientist in the hazard suit like in the original Half-Life there'll be a Barney there to instruct you. Blue Shift does go into Xen. Which, I must say is actually a slight bit better than it was in the original Half-Life (say what you will, Xen wasn't much fun). But you should play this before Opposing Force, since you won't find any new enemy, or a new weapon!
Half Life Blue shift is agreat installment for Half life. In 2001 this mod/game by Gearbox came with a hd pack for all half life mods and games. Ok, enough talking about hd packs and stuff. So in this Half life game you play as Barney Calhoun and well the same thing that happens in Black Mesa. a huge accident that makes a portal to another planet Called Xen and you fight the HECU army and aliens. Well HL Blue shift has no ending boss or gman ending. Its just a car scene. Well, although it was great it lagged most of the time alot of times loading screens would stay there and I had to restart my laptop too many times. ( That was probaly my pc or steam.) This one was really short. But it was still great I'm giving it a 9/10 !