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.

Add addon RSS Addons  (0 - 30 of 79)
Halls2 (HL 1 DM Map)

Halls2 (HL 1 DM Map)

Multiplayer Map

Halls2 was a Half-Life Deathmatch map created by Chris Ashton, co-founder of Turtle Rock Studios; developed while he was a member of Presto Studios. Halls2...

Hold down the Fort

Hold down the Fort

Singleplayer Map 1 comment

Inspired by a particular "game" that has quite the unfortunate fate, this map basically is a defense map where you have to stay alive for a long time...

Generic Testing Map for GoldSrc

Generic Testing Map for GoldSrc

Singleplayer Map

IT'S A GENERIC TESTING MAP, WITH A SKYBOX, WITH A SLOPE TEST, WITH A JUMP HEIGHT MARKER, WITH A LENGTH MARKER, WITH ALL THE HALF LIFE ONE GUNS! VIDEO...

Increased Fonts For HL1

Increased Fonts For HL1

GUIs

This file contains fonts settings for HL1 which increases size of on screen text.

Female Scientists

Female Scientists

Models Pack 7 comments

This model pack contains 4 female Scientists in typical Black Mesa dress code. They are fully animated and use the standard hl1 Scientist Animations...

Valve/Gearbox HL:DM Collection (FIXED!)

Valve/Gearbox HL:DM Collection (FIXED!)

Multiplayer Map 3 comments

UPDATE: THIS IS A REUPLOAD OF MY THE SAME COLLECTION; THIS TIME WITH WORKING PLAYER MODELS! This is a collection of all known official Valve/Gearbox made...

HL PS2 Deathmatch maps for PC/Steam (OUTDATED!)

HL PS2 Deathmatch maps for PC/Steam (OUTDATED!)

Multiplayer Map 3 comments

OUTDATED! SEE LINK IN DESCRIPTION FOR FULL COLLECTION! Thanks to a wonderful github team (Triang3l/BS2PC on github) the Half-Life Playstation 2 port's...

Half Life Log Prop Models

Half Life Log Prop Models

Prop Model

Half-Life log models. 256x256 textures and low poly

Dead Space Isaac Clarke Player Sound Mod!

Dead Space Isaac Clarke Player Sound Mod!

Players Audio

This mod replaces the Default player pain/hit sounds, with the sounds of Isaac Clarke, From Dead Space!

JoeDoof by Gman

JoeDoof by Gman

Animal Skin

Thanks to : H.I.T Team And H.I.T Forums for hosting this prior.

BAR for OP4

BAR for OP4

Weapons Model

Browning Automatic Rifle for Opposing Force SAW: Model: Ankalar Skin: Ripa, Devin Kryss (skin credits might be wrong cause it just gave "Ankalar, Ripa...

CSO Male Metal Arena Hands - OpFor

CSO Male Metal Arena Hands - OpFor

Skin Pack 4 comments

CSO Male Metal Arena Hands rigged to both HD and Classic Valve Weapons, and OpFor Weapons.

CSO Female Metal Arena Hands - OpFor

CSO Female Metal Arena Hands - OpFor

Skin Pack

CSO Female Metal Arena Hands fitted to the OpFor Weapons and Classic Valve Weapons

Steam Opposing Force Booster Pack

Steam Opposing Force Booster Pack

HUDs

Fixes and small improvements for Opposing Force on Steam.

Minor Half-Life Blue Shift and Decay Patches

Minor Half-Life Blue Shift and Decay Patches

HUDs 5 comments

This addon contains two patches, one for Half Life: Blue Shift which fixes some HUD icons to display as the color blue as intended instead of incorrect...

circlepit_b2

circlepit_b2

Multiplayer Map 2 comments

Here is another DM Map I just created today, 4 hours of work. 8 Player_Deathmatch but should be played with 4-6 people :) Enjoy the Circlepit, feedback...

CSO Male Hands (HD Valve Weapons) - OpFor

CSO Male Hands (HD Valve Weapons) - OpFor

Skin Pack 1 comment

A follow up to the CSO Male Hands pack that I did previously for the Half-Life Valve HD Weapons.

DeadPixel's Pipe Wrench

DeadPixel's Pipe Wrench

Weapons Skin 1 comment

Nothing really special .. done in short time ! :D i found this model in the deep parts of gamebanana's Models section, so i decided to rig it with all...

Plasma Rifle | HL (2 Versions, all hands)

Plasma Rifle | HL (2 Versions, all hands)

Weapons Skin 4 comments

Hey guys .. finally back to Goldsrc again, i love to mod it because it's easy ... now for the legendary Half-Life and it's expansions i ported the Plasma...

TV Advertisement/Beta Sniper Rifle

TV Advertisement/Beta Sniper Rifle

Weapons Model 5 comments

Remember that TV Advertisement for Half-Life: Opposing Force that had a Different Model for the M-40A1 Sniper Rifle that was Borrowed from Action Half-Life?...

Half-Life Barney Pack

Half-Life Barney Pack

Models Pack 4 comments

Данный пак, изменяет лица всех моделей людей (солдаты HECU, учёные, GMan и.т.д.) в игре, на...

op4ctf_orange_snow

op4ctf_orange_snow

Multiplayer Map

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

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 3 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 2 comments

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 3 comments

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

Hornetech

Hornetech

Weapons Model 3 comments

A technological abomination. Replaces the Hornetgun.

CSO Female Hands (HD Valve Weapons) - OpFor

CSO Female Hands (HD Valve Weapons) - OpFor

Skin Pack

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 4 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...

Follow Report Profile
Icon
Half-Life: Opposing Force
Platforms
Windows
Developer
Gearbox Software
Engine
GoldSource
Contact
Send Message
Release date
Game watch
Follow
Purchase
Addon Statistics
Files
79
Size
3.06gb
Downloads
34,416
Downloads Today
19
New
Add addon
Feed
RSS
Popular Addons
Valve Hammer Editor 3.4
Valve Hammer Editor 3.4 Singleplayer Map 2.04mb
Halls2 (HL 1 DM Map)
Halls2 (HL 1 DM Map) Multiplayer Map 231.03kb
Female Scientists
Female Scientists Models Pack 2.41mb
Valve/Gearbox HL:DM Collection (FIXED!)
Valve/Gearbox HL:DM Collection (FIXED!) Multiplayer Map 18.33mb
Improved Gearbox Desert Eagle
Improved Gearbox Desert Eagle Weapons Model 180.6kb
New Geneworm
New Geneworm Animal Skin 1.1mb
Kimono's Glock 17
Kimono's Glock 17 Weapons Model 41.23mb
Prefabs Pack
Prefabs Pack Prefabs 4.88mb
MP5 M203 LD
MP5 M203 LD Weapons Model 9.95mb
Half Life Opposing Force Map Pack
Half Life Opposing Force Map Pack Singleplayer Map 441.79kb
Hold down the Fort
Hold down the Fort Singleplayer Map 32.3mb
Addon Categories
- Multiplayer Map
16
- Singleplayer Map
14
- Prefabs
1
- Animal Model
5
- Players Model
2
- Prop Model
2
- Weapons Model
10
- Models Pack
12
- Animal Skin
3
- Weapons Skin
3
- Skin Pack
4
- Music
1
- Players Audio
1
- Language Sounds
1
- GUIs
2
- HUDs
2