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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Sandbot v0.4.2

Sandbot v0.4.2

Full Version 6 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch and capture the flag), Day of Defeat (territorial control), Gunman...

HL CTF Mod + HPB Bot with waypoints (DM and CTF)

HL CTF Mod + HPB Bot with waypoints (DM and CTF)

Full Version 1 comment

A CTF Mod Pack for Half-Life with HPB Bot and waypoints.

Opposing Force 2 - 2009 files

Opposing Force 2 - 2009 files

Demo 1 comment

in 2009, some rogue developer released the original files of the mod, it contains everything you can wish for, even if in early/beta version, such as...

Opposing Force 2 RED 1.35 demo version

Opposing Force 2 RED 1.35 demo version

Demo 4 comments

This is Opposing Force 2 « Red" Demo or 1.35 version, as released by NeverHolle Team.

Sandbot v0.4.1.1

Sandbot v0.4.1.1

Full Version 18 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch and capture the flag), Day of Defeat (territorial control), Gunman...

Half-Life: Opposing Force Classic 1.0
Half-Life: Opposing Force

Half-Life: Opposing Force Classic 1.0

Half-Life: Opposing Force Classic Full Version

This is the first version. There are some broken animations with some weapons, but so far everything's good.

Half-Life:Platinum Trailer

Half-Life:Platinum Trailer

Trailers

This is an official trailer for Half-Life Platinum:A collection consisting of Half-Life, Counter-Strike, Team Fortess Classic, and Half-Life:Opposing...

Sandbot v0.4.1

Sandbot v0.4.1

Full Version 4 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch and capture the flag), Day of Defeat (territorial control), Gunman...

Sandpit v3.7.1 (ZIP)

Sandpit v3.7.1 (ZIP)

Full Version 22 comments

Fixed crash on map change (thanks SylvesterBarry@ModDB). Extract the .zip to steamapps\common\Half-Life\ and restart Steam to play.

Sandpit v3.7 (ZIP)

Sandpit v3.7 (ZIP)

Full Version 25 comments

Extract the .zip to steamapps\common\Half-Life\ and restart Steam to play.

Sandbot v0.4.0.1

Sandbot v0.4.0.1

Full Version 15 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch), Day of Defeat (territorial control), Gunman Chronicles, Natural...

Parabot CB 0.92.1(Android)

Parabot CB 0.92.1(Android)

Full Version 5 comments

Custom Build of Parabot - Human-like Artificial player for Half-Life and some other games on GoldSrc and Xash3D game engines.

Parabot CB 0.92.1(Win32, Linux)

Parabot CB 0.92.1(Win32, Linux)

Full Version 13 comments

Custom Build of Parabot - Human-like Artificial player for Half-Life and some other games on GoldSrc and Xash3D game engines.

Worlds Collide's Music Fix [Steam]

Worlds Collide's Music Fix [Steam]

Music

This will fix the music problem for of6a5 when the elevator goes down in the chapter Worlds Collide (since it starts playing at of6a4b and it stops when...

Sandbot v0.3.1

Sandbot v0.3.1

Full Version 7 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch), Day of Defeat, Gunman Chronicles, Natural Selection (Combat) and...

Sandbot v0.3.0.1

Sandbot v0.3.0.1

Full Version 7 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch), Day of Defeat, Gunman Chronicles, Natural Selection (Combat) and...

Sandbot v0.3

Sandbot v0.3

Full Version 3 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch), Day of Defeat, Gunman Chronicles, Natural Selection (Combat) and...

Xash studioMDL Goldsrc Large Model Compiler

Xash studioMDL Goldsrc Large Model Compiler

Modelling Tool 4 comments

Large Model compiler for Half-Life mods by Xash-Team. for more info please click

Military Duty Version 1.0.1 Final
Half-Life: Opposing Force

Military Duty Version 1.0.1 Final

Military Duty Full Version 20 comments

This is the final release of Military Duty fixing numerous bugs which popped up during the initial release. I wish everyone fun and advice reading the...

Sandbot v0.2.1

Sandbot v0.2.1

Full Version 2 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch), Gunman Chronicles, Natural Selection (combat) and They Hunger. Extract...

Sandbot v0.2

Sandbot v0.2

Full Version 2 comments

Beta release of Sandbot - a bot for Half-Life, Half-Life Opposing Force (deathmatch), Gunman Chronicles, Natural Selection (combat) and They Hunger. Extract...

Hi-Def Gman HL1 "Wisely done Mister Freeman"

Hi-Def Gman HL1 "Wisely done Mister Freeman"

Audio 12 comments

A bit of clever editing with some Michael Shapiro lines to re-create the final words spoken in the canon ending of Half-Life, spoken by the gman: "Wisely...

Half-Life Updates Pre & Post 1.1.0.0

Half-Life Updates Pre & Post 1.1.0.0

Patch 6 comments

This is a collection of what will be needed to get Half-life (1998 Release) up to date. Also includes the 3Dfx MiniGL driver update if you have a voodoo...

HL Sierra SD MODEL PACK

HL Sierra SD MODEL PACK

Full Version 1 comment

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 11 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 21 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
Half-Life

Opposing Force Assault v1.4 Alpha Demo

Opposing Force Assault Demo 12 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 4 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 6 comments

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

Half-Life: Opposing Force SP Map fixes patch

Half-Life: Opposing Force SP Map fixes patch

Patch 3 comments

Contains bug fixes for various maps for Half-Life: Opposing Force - single player. To note that the structure of the maps isn't changed at all , only...

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Half-Life: Opposing Force
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