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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Help needed

News 5 comments

EVERYONE OR EVERY MAPPER OUT THERE !

without mappers the mod could die! and or beloved half-life source is going to be forgotten in a complete dark room where nobody will care about it !

RTSL Awards 2016

RTSL Awards 2016

News

Later, way later than I had hoped, but here are the full details of the RTSL Awards 2016.

J.A.C.K. 1.1.1212 Available in Steam Store

J.A.C.K. 1.1.1212 Available in Steam Store

News 29 comments

J.A.C.K. (previously known as Jackhammer) is a brand new level editor for games with a quake-style BSP architecture (Half-Life, Quake, Hexen II, Quake...

Military Duty release V1.0 final

Military Duty release V1.0 final

Half-Life Opposing Force Fans 5 comments

A mod update for a Half-Life Opposing Force Single Player adventure. (standalone) Make sure to check it out.

Opposing Force Assault 2015 recap and future plans

Opposing Force Assault 2015 recap and future plans

Opposing Force Assault 1 comment

2015 Recap, Demo feedback, updates, 2016+ plans.

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Sandpit v3.7.1

Sandpit v3.7.1

Full Version 12 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

Sandpit v3.7

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 3 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 10 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...

Comments  (0 - 10 of 74)
Fakistill
Fakistill

Are there any subtitle mod?

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Invader4000
Invader4000

The only game i liked (along with Blue Shift) from Gearbox ever since.

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JuleRose
JuleRose

I take it that you didn't enjoy Borderlands or Halo Combat Evolved?

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ExtremeGamerXL
ExtremeGamerXL

Very good.

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Guest
Guest

great mod

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StarboyP
StarboyP

No, it's an expansion.

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RolandDeschain79
RolandDeschain79

You can play Opposing Forces on your Android phone or tablet with Xash3D!

Half Life: Opposing Forces on Android Fixed with Xash3D (Note 2)

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staffssuckshit
staffssuckshit

This game rocks... it brings me many of my childhood.

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Half-Life: Opposing Force
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Windows
Developer
Gearbox Software
Engine
GoldSource
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Highest Rated (2 agree) 10/10

No Half-Life or FPS player would hate this mod! Awesome gameplay, a satisfying arsenal of weapons, the enemies... AND SO MUCH MORE!!! HL:OF rocks! \m/

Jan 7 2011 by DeathReaperGrim

Style
Theme
Sci-Fi
Players
Single Player
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AAA
Expansions
Half-Life: Blue Shift
Half-Life: Blue Shift First Person Shooter
Half-Life: Decay
Half-Life: Decay First Person Shooter
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Half-Life
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Half-Life: Opposing Force
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