Half-Life: Opposing Force is an expansion pack for Valve Software's science fiction first-person shooter video game Half-Life. The game was developed by Gearbox Software and published by Sierra Entertainment on November 1, 1999. Opposing Force is the first expansion for Half-Life and was first announced in April 1999. Randy Pitchford, the lead designer on the game, later noted that he believed Gearbox was selected to develop Opposing Force because Valve wanted to concentrate on their future projects. Over the course of development, Gearbox brought in a variety of outside talent from other areas of the video games industry to help bolster various aspects of design. 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.

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RTSL: 2015 Awards

News 7 comments

Our friends over at RUN. THINK. SHOOT. LIVE. Recently ran their 2015 awards showcasing the best Half-Life content!

Featuring amazing single player maps and mods, covering the whole Half-Life series, there's something for everyone, on to the winners!

Best Source Release - Transmissions: Element 120

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Best GoldSource Release - Arctic Incident

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Best Ville Release - RunThinkShootLiveVille

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Best Moment in a Release - VerticalVilleTwo

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Most Anticipated Release - The Core

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There's over 1300 other maps for you to enjoy, go expand your Half-Life mod catalog!

Congratulations to all winners, we look forward to your creations in 2016, Keep up the awesome work!

Life Signs 2015

Life Signs 2015

News 26 comments

Operation Black Mesa and Guard Duty are back! It's been a very busy year and here's what we've been up to.

Alpha Demo available

Alpha Demo available

Opposing Force Assault 7 comments

Well here it is. The long awaited alpha demo I've been talking about.

Military Duty - Mod Release

Military Duty - Mod Release

Military Duty 14 comments

Hello people. Today I'm proud to announce you the release of a new Hl1 Opposing Force mod.

Project announcement

Project announcement

Hl Opposing Force - Firestorm 8 comments

Today I'm announcing a smaller side project of mine. One I've been working on for quite some time now but just recently have I made massive breakthroughs...

HL Sierra SD MODEL PACK

HL Sierra SD MODEL PACK

Full Version 0 comments

This SD Pack is for the old school sierra half-life Version, to replace that old ugly low definition pack, I did not make this I only repacked it into...

HL : New SD Model Pack

HL : New SD Model Pack

Full Version 2 comments

Half-life New Super definition pack, done this long time, re-uploaded to be download, this all model and redone, and repacked, special thanks to Diamondd...

Half-Life 1 WON 1.1.1.0 Patch

Half-Life 1 WON 1.1.1.0 Patch

Patch 8 comments

With this, you can upgrade Half-Life versions and even downgrade it. You can only use this in the WON version.

Opposing Force Assault v1.4 Alpha Demo

Opposing Force Assault v1.4 Alpha Demo

Opposing Force Assault Demo 4 comments

This is an Alpha demo version so the game is not complete and will be longer , expect bugs , crashes ... ect. Bug reporting is always welcomed to improve...

Opposing Force: Source Models 1.0 Beta

Opposing Force: Source Models 1.0 Beta

Demo 5 comments

Ok before i say anything about this i need to say this: AW HECK YA ITS OUT!!! Its not out its just what i made so far OH that reminds me sense this is...

Half-Life: Opposing Force FGD for Jackhammer

Half-Life: Opposing Force FGD for Jackhammer

Mapping Tool 5 comments

This FGD file modified for the Half-Life: Opposing Force enables the visualization of models (weapons, enemies, items ...) in Jackhammer editing screen...

Post comment Comments  (20 - 30 of 69)
Garyn Dakari

Just finished HL1, HL:OF, and HL:BS.

HL was near perfect in my mind, 10/10 all the way.

OF added some fun new weapons and gameplay mechanics, but almost nothing to the story. And the main character and villain just seemed to be copies of the ones from HL. I liked that one boss fight though, where you had to turn on the Gearbox, activate the Steam vents, and turn the Valve to kill the beast :P 8/10

BS didn't add any new gameplay or weapons, which was slightly annoying, but it made sense. It cleared up a few things about the story which was good, and the Gordan cameos were pretty funny. It was also really short and REALLY easy. I didn't ever die against an enemy in the whole game, and it only took 2 hours to play. And, without spoiling anything, I thought the ending was kinda lame. I'd give it a 7/10

All in all, I loved HL, and liked the expansions. I'll call HL a "Must play" and recommend the expansions if you like HL.

Haven't played HL2 yet, so no rating on that ;)

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E3Pointman
E3Pointman

I love this Game , i just love it!!!!Ahhh good memories :P

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AmaroqDricaldari
AmaroqDricaldari

I want someone to make the LongJump Module useable in Half-Life 2, GMod, and Half-LIfe Opposing Force. I am starting to get annoyed that nobody has done that yet.

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notasinglenamedperso
notasinglenamedperso

They cannot do it for HL2 or Gmod because that is on the source engine and that would be porting and if they did port it it would be illegal and it wouldn't work. For opposing force you do not need to download anyhting just when your in the main menu open the console and type "sv-cheats 1" without the quotes and load a level and then open the console again and type "give item_longjump" without the quotes. it will automaticaly give you hl1's longjump and you can use it.

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RangerC
RangerC

OP4 + Joebama's server = maximum WIN

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sasasa
sasasa

anyone interested in making new/ high quality drill instructor, 9mm, 9mmAR,.. And all of the others?
don't mention about the redux
oh, and HD map textures???

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JrComissarValvatorez
JrComissarValvatorez

Right now I'm just crossing my fingers and hoping Opposing Force is the next thing Richard does after Half Life for his Ultra definition packs.

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JrComissarValvatorez
JrComissarValvatorez

Some up to date models packs would be most appreciated, I haven't been able to find decent replacements for the M249 Saw and the Sniper Rifle and am now using conversions from CS:S with crappy low resolution textures.

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JrComissarValvatorez
JrComissarValvatorez

Found a decent M249 converted from Condition Zero even though it's compiled for Sven Coop, still looking around for a decent M24 for sniper rifle though.

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[OTC]SMOKEY
[OTC]SMOKEY

As long as u dont scrap the project, I dont really feel betrayed. Meaning that this and any other op4 mods progress, for me, is anxiously anticipated. Thanks for the update

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Half-Life: Opposing Force
Platforms
Windows
Developer
Gearbox Software
Engine
GoldSource
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9.5

243 votes submitted.

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Highest Rated (4 agree) 10/10

The campaign is almost as good as HL's but the multiplayer is just the icing on the cake, Oh but the the cake is lie... oh well.

Nov 21 2010 by X-LAyer2

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