| Console: | PC |
| TV Standard: | Region Not Set |
| Developer(s): | Gearbox Software, Valve Corporation |
| Publisher(s): | Sierra |
| Release Date: | 2001-06-12 |
| Players: | 4 |
| Co-op: | No |
| ESRB: | M - Mature 17+ |
| Type: | Shooter |
Half Life: Blue Shift is the second stand-alone expansion pack for Half-Life and was released in 2001. Returning to the Black Mesa Reasearch Facility as a security guard who allied with Gordon Freeman in the original Half Life, players explore previously restricted game's levels, fight hostile creatures or characters and solve a variety of puzzles to advance.
