- gamespot.com reviews/half-life-opposing-force-…Opposing Force's story recounts the events of Half-Life, but from the opposing side's perspective as implied by the title.
- repacklab.com half-life-opposing-force-free-…Return to the Black Mesa Research Facility in Half-life Opposing Force as one of the military specialists assigned to eliminate Gordon Freeman.
- tvtropes.org pmwiki/pmwiki.php/VideoGame/…Half-Life: Opposing Force is the first Expansion Pack to Valve's Half-Life developed by Gearbox Software. Taking place shortly after the Resonance Cascade …
- gearboxsoftware.com game/half-life-opposing-force/In Half-Life: Opposing Force, Gearbox redefined what an action game expansion should be.
- developer.valvesoftware.com wiki/Half-Life:_…Gearbox composed the soundtrack for Opposing Force, which was later used again in Half-Life: Blue Shift Half-Life: Blue Shift.
- gamefront.com games/half-life-opposing-forceRemember the soldiers who gave you so much trouble in Half-Life? Now you are one of them–and life is not so easy as part of the Opposing Force.
- seamacgames.com 239-half-life-opposing-force-game…Half-Life: Opposing Force is a first person shooter for Mac OS. ... Half-Life: Opposing Force on Mac OS added another tutorial mission called "Boot Camp".
- gametrex.com half-life-opposing-force-free-…How to Download and Install Half-Life: Opposing Force. Note: Make sure you have the original Half-Life installed on your computer first.
- indirson.com half-life-opposing-force/Windows bilgisayarlarda ücretsiz olarak oynayabileceğiniz Half Life ‘ın en tutulan versiyonu Opposing Force mutlaka indirmenizi tavsiye ediyorum.
- mobygames.com game/1157/half-life-opposing-force/Opposing Force is the first official expansion for Half-Life, developed by Gearbox Software under the supervision of the original creator Valve.