Half-Life: Blue Shift

Half-Life: Blue Shift is the second (after Opposing Force) expansion pack for the original first-person shooter Half-Life. The game setting is the same as the one in the original game: the story takes place in the science laboratory called Black Mesa Research Facility in New Mexico. However, the game portrays the events of Half-Life through the eyes of Barney Calhoun a security guard employed by Black Mesa. Till the things have gone the wrong way the protagonist was responsible for the lab equip...