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Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.
Release Date: Nov 1, 1999

Buy Opposing Force

$4.99

Packages that include this game

Buy Half-Life 1 Anthology

Includes 4 items: Half-Life: Blue Shift, Team Fortress Classic, Half-Life: Opposing Force, Half-Life

Buy Half-Life Complete

Includes 10 items: Team Fortress Classic, Half-Life: Opposing Force, Half-Life, Half-Life: Blue Shift, Half-Life 2, Half-Life: Source, Half-Life 2: Deathmatch, Half-Life 2: Lost Coast, Half-Life 2: Episode One, Half-Life 2: Episode Two

Buy Valve Complete Pack

Includes 24 items: Counter-Strike, Team Fortress Classic, Day of Defeat, Deathmatch Classic, Half-Life: Opposing Force, Ricochet, Half-Life, Counter-Strike: Condition Zero, Half-Life: Blue Shift, Half-Life 2, Counter-Strike: Source, Half-Life: Source, Day of Defeat: Source, Half-Life 2: Deathmatch, Half-Life 2: Lost Coast, Half-Life 2: Episode One, Half-Life Deathmatch: Source, Left 4 Dead, Half-Life 2: Episode Two, Team Fortress 2, Portal, Left 4 Dead 2, Portal 2, Counter-Strike: Global Offensive

About the Game

Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.

PC System Requirements

    Minimum: 500 mhz processor, 96mb ram, 16mb video card, Windows XP, Mouse, Keyboard, Internet Connection

    Recommended: 800 mhz processor, 128mb ram, 32mb+ video card, Windows XP, Mouse, Keyboard, Internet Connection

Mac System Requirements

    Minimum: OS X Snow Leopard 10.6.3, 1GB RAM, 4GB Hard Drive Space,NVIDIA GeForce 8 or higher, ATI X1600 or higher, or Intel HD 3000 or higher Mouse, Keyboard, Internet Connection

Linux System Requirements

    Minimum: Linux Ubuntu 12.04, Dual-core from Intel or AMD at 2.8 GHz, 1GB Memory, nVidia GeForce 8600/9600GT, ATI/AMD Radeaon HD2600/3600 (Graphic Drivers: nVidia 310, AMD 12.11), OpenGL 2.1, 4GB Hard Drive Space, OpenAL Compatible Sound Card
Helpful customer reviews
26 of 28 people (93%) found this review helpful
90 products in account
27 reviews
12.4 hrs on record
Another expansion pack for the original HL, this time giving us a look into the "enemy side" and the way that the events of Black Mesa affected the Marine Corps called to "contain" the situation. The main character Corporal Adrian Sherpard is brought into the facility but things dont go like planned and all hell is broken loose.
Another short game that complements the original story of Gordon Freeman, but the ending of this game leads me to believe that we might see more of this character in future installements of HL, so it might not be just an expansion pack game.

9/10.
Posted: May 17th, 2014
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25 of 28 people (89%) found this review helpful
337 products in account
39 reviews
17.0 hrs on record
The multiplayer in this game is steller! Id buy it with a couple of friends souly for that! and its still a great game. I mean come on its half life.
Posted: April 10th, 2014
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15 of 16 people (94%) found this review helpful
16 products in account
1 review
2.3 hrs on record
This game is an endless classic addition to the base Half-Life universe, a nice continuation of the feel of the original game that no fan should be without.
Posted: June 20th, 2014
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10 of 11 people (91%) found this review helpful
173 products in account
3 reviews
4.2 hrs on record
Honestly, it IS incredible.
Now I remember HL1 when it has only come out and it was splendid. It looked so detailed back there, so long, filled with puzzles and crazy stuff.
As far as I remember, when HL Opposing Force came out, it was also praised as an awesome and one hell of an Add-on (yeah no freaking DLCs back there). I remember, I was using cheats since HL was hard (and it still is) and I simply couldn't pass through it otherwise.

Now I've finished it honestly with only my skill alone, or should I say.. Survived it. With a constant save/load, trying to stuck as much of the little HP given as possible, using up ALL of the weapons, tools and explosives given, and Honestly, after years of modern shooters with, you know Health Regen, Dumb AI that's standing still and shooting after a huge pause, linear gaming and a hell lot of ammo on round I'm voting for that era of FPS games to be back here.

Forget the graphics I was SO concentrated on the action, simply sucked into game, I really couldn't stop. For the first time in YEARS I have finally had challenge, and if you, my friend is still willing to have challenge in the one genre that puts your reflexes and aim to the test, you HAVE to fight through this game. You can either realize what it trully means an old-school way of making FPS games, or you might remind yourself of that wonderful era, when we were really proud of ourselves to get to the title in the end where you sit there relaxed and realizing it's over. No wonder modern FPS can't possibly make you feel the thrill, they don't have the guts for this.
Posted: March 8th, 2014
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10 of 12 people (83%) found this review helpful
105 products in account
5 reviews
2.2 hrs on record
What an awesome and epic expansion for Half-Life! (Best expansion in my opinion)
We've got new weapons, cool enemies and more stuff that made the gameplay really good.
The story is amazing just like Half-Life and i highly recommend you to buy it!
However the Steam version got some problems. But i still recommend it!
Posted: June 23rd, 2014
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79 of 82 people (96%) found this review helpful
457 products in account
13 reviews
6.5 hrs on record
Status: Approved
Highly recommend this one
It consists of 12 Chapters, but overall, is just as short as Blue Shift
What i liked about it, was the Boot Camp. basically it's a typical traning mission, but well, a nicely done training mission. Had a lot of Army stereotypes and Full Metal Jacket references
Now, unlike Blue Shift the game has a lot of new things added to it:
You get nightvision instead of the flashlight
sniper instead of the crossbow
pistol with a laser pointer instead of the revolver
wrench and a knife instead of the crowbar
2 new alien weapons, one is like a bazooka, the other has infinite ammo(shoots lightning balls)
Instead of long jumps, your protagonist climbs on ropes
1 new Black Mesa prototype weapon, that teleports you to Xen. The location you get teleported in has a lot of loot.
1 completely new weapon, not just an alternative model - a machine gun (M249 SAW)
There are new alien types to fight
Also, throughout the game, you will encounter your comrades, the most important ones are medic and engineer. Medic can patch you up, while the engineer can drill through doors.
And you would probably want to buy it for the plot
Though just like with Blue Shift, it doesn't really collide with Half Life 1 plot, you see Freeman once and that's it, but unlike Blue Shift, it has some important stuff to bring to the table
Posted: November 20th, 2013
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