Half-Life: Blue Shift
- Source
- Steam
- App ID
- 130
- Developer
- Gearbox Software
- Publisher
- Valve
- Released
- June 1, 2001
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.