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 (1,238 reviews)
Release Date: 1 Nov, 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

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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

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36,99€
18,49€

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

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Recommended By Curators

"Still one of my favorite expansions ever. Kill aliens (or scientists) with a wrench, a tentacle or a labia that shoots green eggs and ham. Recommended."

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
56 of 62 people (90%) found this review helpful
5.6 hrs on record
Posted: 25 October
Military coverup simulator.
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45 of 50 people (90%) found this review helpful
5.0 hrs on record
Posted: 25 October
Adrian Shepard: ...
Gordon Freeman: ...
You don't need a character to talk to make a good game. Tenouttaten.
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43 of 50 people (86%) found this review helpful
11.5 hrs on record
Posted: 9 November
SNIPER SCHOOL SURE PAID OFF TODAY
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28 of 29 people (97%) found this review helpful
15.1 hrs on record
Posted: 27 September
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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18 of 19 people (95%) found this review helpful
4.4 hrs on record
Posted: 8 October
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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12 of 12 people (100%) found this review helpful
19.3 hrs on record
Posted: 3 October
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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12 of 13 people (92%) found this review helpful
4.9 hrs on record
Posted: 7 November
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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10 of 10 people (100%) found this review helpful
8.0 hrs on record
Posted: 15 October
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.
Was this review helpful? Yes No
14 of 18 people (78%) found this review helpful
210.0 hrs on record
Posted: 9 November
Operation: Mother's House
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9 of 9 people (100%) found this review helpful
4.9 hrs on record
Posted: 20 October
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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10 of 11 people (91%) found this review helpful
7.2 hrs on record
Posted: 2 November
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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7 of 7 people (100%) found this review helpful
18.5 hrs on record
Posted: 27 October
Honestly....Better than the original hl. 9/10
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9 of 11 people (82%) found this review helpful
0.1 hrs on record
Posted: 30 September
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 6 people (100%) found this review helpful
14.7 hrs on record
Posted: 8 December
best half life game in the series :)
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11 of 17 people (65%) found this review helpful
0.9 hrs on record
Posted: 3 November
make this game with hl2 engine
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4 of 4 people (100%) found this review helpful
2.7 hrs on record
Posted: 14 October
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: 29 September
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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4 of 4 people (100%) found this review helpful
10.1 hrs on record
Posted: 27 December
Opposing the Forces

Half life, which I used to pass the time again and again, is still my favorite FPS game. There are many reasons for that (including countless LAN parties in my teenage years), but the thing is, only recently, and thanks to my friend who bought me HL pack, I've discovered that apart from Blue Shift, (which I personaly call The Blue Sh*t) there has been another expansion. This time more interesting, since we get to see the Black Mesa events from perspective of a Solider. After beating the game, I decided to share my thoughts on it.

1. The Lord is our Shephard. - The main character, the idea of the game

Shephard. Well that's basically who our protagonist is, just like in the first HL, we play the part of the people's hero, leading the frightened flock through the dangers of the warzone that the Black Mesa compound has become. Groups of two, three soliders can be found scattered along the whole game. I think it's a good idea to view the original HL story from a different perspective. The point of view is the key here, for it gives greater insight to certain things, like:
- Humanizing the Grunts, whom, in the first HL we understandably percive as an evil force, not very much different from the aliens from Xen. Here, we realise they are just pawns, placed in a similar position to the BM personnel.
- Outside of Black Mesa, we get to see what happens on a larger scale, exploring the military grounds.
- We revisit certain places, like the laboratory in which Freeman teleports to Xen, and get to see what happens then.
The entire storyline follows in the wake of Gordon Freeman, so it has a nice feeling to it, for the players who enjoyed the plot of the original game.

2. Panta Rhei - What's different from the original HL

I must say I'm not a fan of the changes to the armory, or for that matter, to the way we can fight here. Some of the weapon options recived a failry mirrored replacement, like the Colt Python. Some, in fact about a half, remained unchanged - Glock 9mm, the HK MP5, Spas-12, and RPG. The new weapons include three alien biological weapons, which are very ammo efficient since each of them posesses a way of replenishing the ammunition indefinitely. I don't like their concepts however, since for me, they don't serve any purpose in expanding our combat possibilities (except for the melee weapon, but it's nearly impossible to use in serious combat, due to it's nature).
I don't understand the replacement of the crowbar. It has been devided into two weapons - Pipe Wrench, which has 2 attack modes (a normal hit and a loaded attack which takes 3 seconds to fully load) and a knife, quick and low damage/range weapon. For me, the crowbar was perfect. After getting the glock I barely even used the wrench, since there is plenty of 9mm ammo everywhere, despite playing on Hard difficulty. The explosives remain unchanged. We get the granades, Laser Tripmines and Satchel Charges. More new weapons include Sniper Rifle, Heavy Machinegun or an experimental Displacer Cannon.
Casual, Casual.. ehh. C'mon, the three best weapons of the series, being (in my humble opinion) The Crowbar, The Crossbow and The Gauss Riffle, are gone. What fun is there in slashing Xen'ians with a regular knife?
The enemies are also different, considerably tougher and more challanging than in the first HL, altough less fun in my opinion. We hardly see any zombies or headcrabs. We mostly battle organised Xen soliders and their.. warmachines?

3. Nihil novi sub sole - So what is this game all about

It's Half Life. Reskinned, rearranged, rewritten. But it's all the same. The ideas were eaten, chewed and spat out in a mixture of green paint. I like the game, I really do. It's just - we don't do anything new (oh ok except for using a rope two times). Literally. It's all crawling through the pipes, trying to figure out how to get out of old storage-like places, fighting, jumping. There is no new element. We don't even have a chance, despite being a Corporal, to actually implement this element, for commanding people or anything. We just run around exactly like Gordon did, and fight a war we don't understand. there is one thing worthy of mentioning here though - The game passes on, and even expands the element which is one of the reasons for my deep affection for the first HL, this being the nessecity of strategic usage of the enviorment. There are situations and places in which you have to actually figure out what to do. In most of today's games you are given a minimap that shows you where to go. These games explain, step by step, what button to touch and what wire to cut. In this series you've got to rely on your instinct, and that's awesome.

4. Leave a light on for me - More about concepts, changes and the game

Am I the only person who hates the night vision? Man, it's such a terrible concept. I understand that we play a solider and military has to possess some high tech, but damn. You (or at least I) can hardly even see anything in this green light, even in the dark. I'd like a regular flashlight instead, please. What's the deal - couldn't they just leave the flashlight AND add the night vision? If they could implement 3 melee weapons, why not 2 light variants? I know not. Besides, there are like 3 or 4 places in the game where it actually comes in handy. Let's say HL has way more to do with a solid horror climate, where you had to use the flashlight actually more than the pistol and the battery was almost always red. The game is too long. Most of the locations are artificially stretched by repetition. In my opinion the game could be reduced to the 60% of its current length and still have the same, if not the better impact. By the way - there are hardly any bosses here, the ones that do exist are reused HL 1 bosses or boss ideas. Sad. Also, what the hell is with this Displacer Cannon's secondary fire mode? So we can basically teleport to safety at any moment we just need ammo. Did I mention that I hated the Night Vision?

5. Too much love will kill you - my final opinion

The game is decent, overall. It lacks some elements of the original HL atmosphere, which made it a hit, but perhaps it was meant to be this way. Despite playing as a solider I almost haven't felt the military spirit in the process, except for some parts when the combat music carried us. As I mentioned earlier the action is stretched like granny's breasts. There were moments where I've felt like I was meeting some kind of a Force Opposing my completion of the level. Oh, lest I forget - my ultimate complaint. The game was way too easy. Playing on the Hard difficulty, through the most of the game, save for perhaps two last chapters, I was running around will full health... and armor. For old HL veterans this must sound like a blasphemy since HEV armor was hard to come by in HL 1. There are also way too many medpacks in this game. Well perhaps I am tainted with my multiplayer experience. Anyways, I recommend this game, adding 0.5 to my original score, for the sentiment towards the series.

Half Life: Opposing Force - 6.5 / 10

Proxym 2014
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18 of 31 people (58%) found this review helpful
1.3 hrs on record
Posted: 20 August
Call of Duty: Black Mesa
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5 of 6 people (83%) found this review helpful
1.4 hrs on record
Posted: 28 September
HL: OpF was a great add on part to the Half-Life 1 story, where you play as Adrien Shepard...hope I spelt that correctly...I really don't like describing things, but I recommend because it was AWESOME FUN!
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