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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op4ctf_orange_snow

op4ctf_orange_snow

Multiplayer Map 0 comments

Name: op4ctf_orange_snow Info: Map for: Half-Life: Opposing Force Type: Capture the Flag. Credits: Original map(fy_snow) - by Punkki, porting - Cybermax...

op4ctf_orange_bridge_v2

op4ctf_orange_bridge_v2

Multiplayer Map 2 comments

Name: op4ctf_orange_bridge_v2 Info: Map for: Half-Life: Opposing Force Type: Capture the Flag. Credits: Original map(gg_the_bridge_v2) - Terrorkarotte...

op4ctf_orange

op4ctf_orange

Multiplayer Map 7 comments

Name: op4ctf_orange Type: Half-Life: Opposing Force map Info: You attention a little CTF map in orange and gray colors. This card - the conversion of...

New Maps Omesa

New Maps Omesa

Singleplayer Map 1 comment

The new map created by Ted321 map works on "Half-Life Opposing Force" and "Sven-Coop All versions"

Pete's Franchi SPAS 12

Pete's Franchi SPAS 12

Weapons Model 2 comments

Franchi SPAS 12. Some variants. Many hands... but not those ones.

Hornetech

Hornetech

Weapons Model 2 comments

A technological abomination. Replaces the Hornetgun.

CSO Female Hands (HD Valve Weapons) - OpFor

CSO Female Hands (HD Valve Weapons) - OpFor

Skin Pack 0 comments

I did this pack as a follow up to my earlier skin pack, where I fitted the CSO Female Hands to the Valve HD Weapons.

New Skins Hecu

New Skins Hecu

Models Pack 2 comments

The new skins created by Jocker's model works on "Opposing Force" and "Sven-Coop" is the original texture of "Half-Life Source created TheUnbeholden"

zs subway ZOMBIE SCENARIO MAP

zs subway ZOMBIE SCENARIO MAP

Multiplayer Map 5 comments

This map was made by NEXON Corperation for Counter Strike Online and was ported by me SLeNd3rMaN23 This map is extension of the maps zm_metro and dm_Tunnel...

USMC Opposing Force Alien Warfare

USMC Opposing Force Alien Warfare

Models Pack 2 comments

United States Marine Corps Opposing Force Alien Warfare This is the skins of US Marines's Shephard teams. Introducing the Gunnery Sgt "George Clooney...

Black Mesa Otis v2

Black Mesa Otis v2

Animal Model 0 comments

Removed Chrome, change the texture, desert eagle, remove the helmet otis, change the color vest (it looked very blue), Add, beard to the otis,

Operation Black Mesa: Menu Background + Theme

Operation Black Mesa: Menu Background + Theme

Music 0 comments

This new version of the Operation Black Mesa main theme. We would like to ask you for the feedback. It will help us to determinate the direction we should...

Kimono's Glock 17

Kimono's Glock 17

Weapons Model 3 comments

A Glock, model 17. Every possible combination of hands, muzzle brake and LASER Aiming Module via 57 compiles.

MP5 M203 LD

MP5 M203 LD

Weapons Model 3 comments

The same completely original idea, now available in lo-fi. Fo' rizzle.

MP5 M203

MP5 M203

Weapons Model 5 comments

TOTALLY ORIGINAL NEVA BEEN DONE BEFO' New animations though. So there's that.

Half Life Opposing Force Map Pack

Half Life Opposing Force Map Pack

Singleplayer Map 0 comments

The new map created by Jocker's and Xeno-J includes seven maps for "Opposing-Force" works on all versions Sven-Coop

AREA MOD

AREA MOD

Singleplayer Map 0 comments

New map created by Xeno-J works in "Opposing Force" and "Sven-Coop" and "Residual Life". in full "AREAMOD" includes. Human_Grunt, Human_Grunt_Ally No...

Improved Gearbox Desert Eagle

Improved Gearbox Desert Eagle

Weapons Model 7 comments

Has anyone else ever wondered why Opposing Force's desert eagle looked nothing like a desert eagle? I have, and so I've decided to correct this. Enjoy.

Sonic playermodel pack for goldsource games/mods

Sonic playermodel pack for goldsource games/mods

Players Model 1 comment

Found this on the web a few years ago when won2 svencoop 3.0 was more active and remembered i had saved it somewhere on a old install of Half-Life. Image...

Pancor Jackhammer

Pancor Jackhammer

Weapons Model 7 comments

The Pancor Jackhammer (likely Mk3A1) from The Wastes, a shotgun replacement.

Steam Splash Creator

Steam Splash Creator

GUIs 4 comments

This little tool allows you to create custom menu backgrounds for your Half-Life games.

[mdl]OP4 HD HEW weapon pack

[mdl]OP4 HD HEW weapon pack

Models Pack 1 comment

Hev suit hands replacement for default soldier hands. Like this models, leave ratings and comments ;)

[mdl]OP4 LD HEV weapon pack

[mdl]OP4 LD HEV weapon pack

Models Pack 2 comments

Hev suit hands replacement for default soldier hands. Known bugs: no model penguin with a grenade. It was too lazy to do, because it uses only the CTF...

[mdl]OP4 HD Barney weapon pack

[mdl]OP4 HD Barney weapon pack

Models Pack 5 comments

It replaces the standard weapon models to hev suit hands models. Like this models, leave ratings and comments ;)

Epic huge props pack for goldsource!

Epic huge props pack for goldsource!

Models Pack 2 comments

(I do not own any of this, i just modified some of them) I hope this helps goldsource developers, but know that you can't use this for commercial purposes...

Paul Blart Mall Cop reskin for Otis

Paul Blart Mall Cop reskin for Otis

Animal Model 1 comment

Have you ever wanted to fight alongside Paul Blart in Black Mesa? Me neither. But here it is.

Half-Life: Further Data + dm_office

Half-Life: Further Data + dm_office

Multiplayer Map 6 comments

Disclaimer: I take no credit for developing this addon or putting it on the internet. All credit goes to Valve, Gearbox, and Ryan Finnie. I am only placing...

OP4 DeamonD Pack

OP4 DeamonD Pack

Models Pack 2 comments

This is the DeamonD weapon view and world model version for Opposing Force. See description for details.

Hev charger & health charger from Half-life Decay

Hev charger & health charger from Half-life Decay

Prop Model 9 comments

those 2 models with they're animations, they're not made by me, they have animations and a retexture could make them look better, but im not going to...

Gold Source Anthology Add On Content Pack

Gold Source Anthology Add On Content Pack

Multiplayer Map 3 comments

This Pack Contains Multiplayer Map Packs, SDK Tool Kits & Game Fixes.

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