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Half-Life: Opposing Force (1999)

Gearbox Software

Standalone expansion of Half-Life

Linux, Mac, PC (Microsoft Windows)

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Opposing Force returns to the same setting as Half-Life, but instead portrays the events from the perspective of a U.S. Marine, one of the enemy characters in the original game. The player character, Adrian Shephard, is sent in to neutralize the Black Mesa Research Facility after a scientific mishap causes it to be invaded by aliens, but quickly finds that … Opposing Force returns to the same setting as Half-Life, but instead portrays the events from the perspective of a U.S. Marine, one of the enemy characters in the original game. The player character, Adrian Shephard, is sent in to neutralize the Black Mesa Research Facility after a scientific mishap causes it to be invaded by aliens, but quickly finds that the Marines are outnumbered and slowly being beaten back by a second alien race and black operations units. Read more

Details

Developers
Gearbox Software
Publishers
Sierra Entertainment, Valve
Genres
Platform, Puzzle, Shooter
Themes
Action, Science fiction, Thriller, Warfare
Franchises
Half-Life
Series
Half-Life
Also known as
OP4 (Acronym) · OPFOR (Acronym) · HL: OPFOR (Acronym) · HL: OP4 (Acronym)

Release dates

  • Nov 10, 1999 (North America) PC (Microsoft Windows)
  • Nov 15, 1999 (Europe) PC (Microsoft Windows)
  • Jul 31, 2013 Linux, Mac

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