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.
User reviews: Overwhelmingly Positive (1,342 reviews)
Release Date: Nov 1, 1999

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Packages that include this game

Buy Half-Life 1 Anthology

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

Buy Half-Life Complete

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

Buy Valve Complete Pack

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

 

Recommended By Curators

"Return to Black Mesa in Half-Life’s first expansion. With new weapons, enemies, and story arcs, it clearly lives up to the standards set by the original"

About This 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.

System Requirements

Windows
Mac OS X
SteamOS + Linux

    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

    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
    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
98 of 109 people (90%) found this review helpful
2 people found this review funny
5.6 hrs on record
Posted: October 25, 2014
Military coverup simulator.
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71 of 80 people (89%) found this review helpful
1 person found this review funny
5.0 hrs on record
Posted: October 25, 2014
Adrian Shepard: ...
Gordon Freeman: ...
You don't need a character to talk to make a good game. Tenouttaten.
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42 of 45 people (93%) found this review helpful
15.1 hrs on record
Posted: September 27, 2014
Making an expansion pack to Half Life was no small task. But Gearbox was more than willing to set the bar.

Opposing Force is fundamentally a similar experience to Half Life 1. But it expanded on it's core foundation in numerous ways. There are new actually interesting weapons, friendly squad members who serve different non-combat roles and a few other things.

But what Opposing Force does well is it continues the legacy left by Half Life 1. It has consistantly good pacing and like Half Life dynamically goes from low-key puzzle segments to high octane action horror. It's just so much fun to play it's an actual challenge for me to pick between playing either Half Life or Opposing Force. Since both games compliment each other so well.

If you like Valve games, or even first person shooters. You owe it to yourself to play Opposing Force. It is one of those games that you just can't stop playing.
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58 of 73 people (79%) found this review helpful
5 people found this review funny
11.5 hrs on record
Posted: November 9, 2014
SNIPER SCHOOL SURE PAID OFF TODAY
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34 of 37 people (92%) found this review helpful
1 person found this review funny
4.4 hrs on record
Posted: October 8, 2014
You get to play as a mute special force unit who wrecks havoc upon Black Ops assassins, and aliens from an alternative dimension with a wrench.
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27 of 27 people (100%) found this review helpful
1 person found this review funny
5.7 hrs on record
Posted: January 16
TL:DR? See Conclusion

NOTE:
Also see my Half-Life (1) Review:
http://steamcommunity.com/id/miyumiayase/recommended/70

INTRODUCTION:
Half-Life: Opposing Force (also known as Government Cover-up Simulator 1999 or Call of Half-Life: Black Mesa Warfare) is a first-person action shooter game that serves as the first expansion to the critically acclaimed and award-winning Half-Life by Valve. Unlike Half-Life however, this title was made by Valve alongside Gearbox Software. Interestingly, unlike Half-Life, the player will see the Black Mesa incident through the eyes of a U.S. Marine(the Military enemies in the first game).

The player takes the role of Commander…(I mean)…Corporal Shephard, a U.S. Marine with the Hazardous Environment Combat Unit who were sent to the Black Mesa Complex for an unknown operation. While en route inside an Osprey to the Complex, Shephard and his team are attacked by Xen air-borne units forcing the Osprey to crash knocking him out. After regaining consciousness, Shephard learns that the Marines were being severely outnumbered and outgunned by the Xen forces which prompted High Command to call for a full evacuation and that anyone left behind is on their own (totally disregarding the U.S. Marine mantra “No man left behind”). Follow Shephard in his trek across the massive Black Mesa Complex in an attempt to escape while uncovering a government cover-up that would pitch Shephard against U.S. Black Operations Units, Xen forces, and a new alien threat called Race X.

PROS:
+ New enemy types with unique abilities and weapons (instead of just rehashing the materials of the main game)
+ Fun and interesting new weapons such as the Displacer Cannon and Shock Roach
+ Well made action-packed story which shows players a different side of the Black Mesa Incident
+ Introduction of new game mechanics such as Rope Climbing, Secondary heavy melee attacks, Grappling hooks (Barnacle hook?), Night vision and Portal guns that send you (or your target) to another dimension (See Displacer Cannon above)
+ Possibly the first FPS game to implement a Military Squad game mechanic
+ Entertaining Tutorial with cultural references
+ Story intersects with some important Half-Life 1 events
+ Good voice acting for its time
+ Andrian Shephard is possibly a descendant of Jack (protagonist of Bioshock) due to his uncanny ability to wield a Wrench in battle against Black Ops Soldiers and Aliens.

CONS:
- Relatively short game with me clocking around 5 hours of game time on hard mode.
- New squad mechanics is clunky (I can actually forgive this since it’s possibly the first squad mechanic on an FPS game)
- Puzzles are not that satisfying to solve
- Final chapter leading to the final boss feels rushed and underdeveloped
- Unsatisfying and easy final boss

CONCLUSION:
GREAT EXPANSION that I HIGHLY RECOMMENDED specially for those who played the first Half-Life game and I say this because it is littered with several subtle nods from the main game. Opposing Force is a good example on how to make an expansion; it introduces new game mechanics, new enemies, new weapons and all the while delivering a new story that still being closely related to the main Half-Life plot.

MUST BUY AND MUST HAVE. I, however, do recommend you purchase the Half-Life Anthology if you already have Half-Life 2 but if you do not have it, get Half-Life Complete.

---------------------------------------------------------
Like my Reviews? Follow my Curator's Page:

http://store.steampowered.com/curator/6861651-Miyumi%27s-Review-Corner/
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17 of 18 people (94%) found this review helpful
19.3 hrs on record
Posted: October 3, 2014
Best expansion for a game : EVER!
I haven't had so much enjoyment playing an expansion pack. As always, Valve never fails to impress, same goes to Gearbox for their legendary game developing skills.
Opposing Force not only expands the main game, but adds major updates to the already grand foundation laid out by Half-Life. The story starts right where Half-Life starts, but you're controlling a commando of the HECU unit (which was the army squadrons that were trying to kill you in the original game) and the plot cuts off to a different direction that we never got to see before and also you get to have super cool buddies and with so many additions to the game which are : MANY new weapons, different equipment, lots of new characters, better AI, squad teammates with different attributes, lots of new enemies.
And best thing was, I got this gem during the Valve special sale event along with the whole Half-Life collection just for 10 bucks. Best decision EVA!
10/10 - All hail Gaben, our lord.
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17 of 19 people (89%) found this review helpful
4.9 hrs on record
Posted: November 7, 2014
Fantastic expansion for the half-life universe.

New weapons, more pleasant encounters with scientist than in the first half-life.

More complex HECU units with more variety in the apperal aspect of the soldiers.

Different skillsets for soldiers in your platoon I.E.; Engineer Torching down sealed doors, medics for healing, etc.

I recommend you save frequently because them auto-saves are IMO not frequent enough.

Sadly the military still wants to kill you even though your on they're team

( Exluding the HECU soldiers known for their grey camo and Green PCV vest, enemy military units will be in all black. )
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13 of 13 people (100%) found this review helpful
18.5 hrs on record
Posted: October 27, 2014
Honestly....Better than the original hl. 9/10
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11 of 11 people (100%) found this review helpful
8.0 hrs on record
Posted: October 15, 2014
As someone loving a good setting and a great story with room for theories and mystery, this game gives me everything I could ask for.
If you love or even like Half Life, play this game!
It enhances the story for a big chunk.
This game is from 1999, so I won't even talk about graphics and stuff, you can imagine how it looks.

The only thing that bothers me is that you change weapon if you pick up the new one.
That killed me once as I got some Nades from a crate, but that is a little thing.
You can't change that in the options menu, if you know console commands feel free to change it, I don't know how.

Anyways, you should totally get this game.
I hate that I did not play it earlier.
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17 of 22 people (77%) found this review helpful
2 people found this review funny
210.0 hrs on record
Posted: November 9, 2014
Operation: Mother's House
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10 of 10 people (100%) found this review helpful
4.9 hrs on record
Posted: October 20, 2014
Well, no need to tell you what it is.
Opposing Force gives you different part of view on the Black Mesa accident, playing as Adrian Shepard, Miliary Specialist that has been sent to eliminate Gordon Freeman, but after arriving discovers that the best thing to do, is escape the facility.
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11 of 12 people (92%) found this review helpful
7.2 hrs on record
Posted: November 2, 2014
A nice long expansion at around 7 hours on my first playthrough on medium difficulty it's well worth $4.99. Especially if you want more Half Life while waiting for Episode 3/Half Life 3.
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25 of 40 people (63%) found this review helpful
2 people found this review funny
1.3 hrs on record
Posted: August 20, 2014
Call of Duty: Black Mesa
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14 of 20 people (70%) found this review helpful
0.9 hrs on record
Posted: November 3, 2014
make this game with hl2 engine
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7 of 7 people (100%) found this review helpful
14.7 hrs on record
Posted: December 8, 2014
best half life game in the series :)
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9 of 11 people (82%) found this review helpful
0.1 hrs on record
Posted: September 30, 2014
An excellent expansion pack from developer Gearbox! I wonder how many of us still know what expansions were... nowadays these extra stories would come in the form of DLCs not an expansion pack. It meant to indicate a longer story and this is definitely a bigger pack than a dlc which can be a single weapon or a new costume for a character in the game.

In any case, Opposing Force puts us in the shoes of a corporal, a certain Adrian Shepard, who - along with his fellow soldiers - is sent to neutralise the enemies invading the Black Mesa facility. As expected, things go awry and you are alone facing the good-old aliens. There is a new assortment of weapons, new enemies and new music. Oh, and there are fat security officers helping you!

By the way: the game comes with widescreen settings and vsync can be switched on! Just excellent!

A relatively long and challenging expansion pack that comes very cheap. It did age a lot throughout the 15 years but it is still a great game... at least for reminiscing purposes.
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6 of 7 people (86%) found this review helpful
5.2 hrs on record
Posted: January 4
Opposing Force was Gearbox's first game and they did not disappoint back then. As the first of two Half-Life expansions Opposing Force put you in the shoes of a military character sent in to take out Gordon Freeman. Same quality as the original Half-Life and another great storyline addition to the Half-Life world. This is what all expansions of games should look like.
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4 of 4 people (100%) found this review helpful
2.7 hrs on record
Posted: October 14, 2014
Half Life: Opposing force is an extension to the original Half Life game.
You play as a soldier interventing during the Black Mesa incident, so it happens (at least starts) during HL1's event.
It's a good extension and is worth giving a try if you liked HL1, as it brings a few new elements (weapons, some new gameplay possibilities like interaction with props) and it's always good to meet again these stupid Rambo sounding soldiers.
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4 of 4 people (100%) found this review helpful
2.9 hrs on record
Posted: September 29, 2014
A perfect add on for the original game, adds a whole new level of understanding and perspective to the events of Half Life. Worth buying, can't fault the game at all, as it still manages to entertain me as much as it did when I played it for the first time a few years ago, and has continued to do so for other people for years, great games never become "outdated" and this game is a truly shining specimen of a classic fps that delivers both action and reflection upon the original game. I urge you to buy it, no Half Life player should think twice before doing so

10/10
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