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.

Military Duty - Mod Release

Military Duty - Mod Release

Jun 28, 2015 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

Jun 1, 2015 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...

2014 Kickoff Update

2014 Kickoff Update

Mar 29, 2014 27 comments

The latest news on Operation Black Mesa and Guard Duty!

Half-Life: Echoes Announcement

Half-Life: Echoes Announcement

Mar 6, 2014 27 comments

After 15 years of enjoying Half-Life, and the endless user-created content over those years, I wish to give back to the community and create my own take...

Lifesign detected

Lifesign detected

Sep 19, 2011 Hl Opposing Force - Firestorm 4 comments

I've returned once again. Several improvements have been made over the year.

The June Break

The June Break

Jun 7, 2010 Soldier's Adventures 4 comments

Due to exams, we can not work yet fully operational. Work will resume in early July.

Sitrep = Situation Report

Sitrep = Situation Report

May 19, 2010 Hl Opposing Force - Firestorm 12 comments

Today I have great news to tell. New models and maps are coming great along.

Welcome back in the Field Soldier!

Welcome back in the Field Soldier!

Feb 28, 2010 Hl Opposing Force - Firestorm 6 comments

Well I'm back people like promised fresh and with many news to tell you. Read the entire news if you want to know more about my mod and it's current status...

We are looking for a coder.

We are looking for a coder.

Sep 16, 2009 Hl Opposing Force - Firestorm 17 comments

We need help! Read the entire news to learn more about the latest progress and why we needing you....

Newstime

Newstime

Aug 29, 2009 Hl Opposing Force - Firestorm 10 comments

We're still building on the mod. Learn more about the latest progress when you read the entire news...

Status report

Status report

Aug 13, 2009 Hl Opposing Force - Firestorm 11 comments

I'm still building on the mod. Learn more about the latest progress when you read the entire news...

New Team members and an update

New Team members and an update

Jul 31, 2009 Hl Opposing Force - Firestorm 7 comments

Hey folks! Today is a great day for my mod. Welcome with me together some new team members and see a picture update.

Update

Update

Jul 24, 2009 Hl Opposing Force - Firestorm 4 comments

See some new pictures of my WIP stuff and enjoy. I'm Still working hard on the mod.

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Half-Life: Opposing Force
Platform
Windows
Developer
Gearbox Software
Engine
GoldSource
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Release Date
Released 1999
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