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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Hello. It's been a while, eh?

Spirinity v0.4 is almost ready but I'm not going to publish the mod files yet. You can download and build it from GitHub. OR you can download the OP4 version, which is basically Spirinity v0.4 but with Opposing Force entities.

Ah, yes. OP4 version is available now. It works in general but the campaign is a bit buggy and I'm working on fixing that. But now, this version should be very well enough for prototyping and beta mapping.

Back to Spirinity v0.4, what's changed?

Added Grayscale post-processing effect.
Added Borderless Fullscreen option. (Check the advanced tab)
Added Blood Puddles.

Known Issues (Will be fixed)

Water is not rising
Buttons are a bit broken ( Thanks for reporting the bug, MatNie )

I'm working on fixing these issues and will be fixed fastly, I hope. When these issues are dealt with, I will release the new version of Spirinity.

Until then, have a good lifetime.


Important updates about media contents and news

Important updates about media contents and news

News

Since a while, im on full development of Black Lambda, and i'd like to share such experiments with the community.

J.A.C.K. major update: 1.1.2800

J.A.C.K. major update: 1.1.2800

News 5 comments

New versions of J.A.C.K. editor have been in beta status for ages, and now the time has come to publish a major update for all our users!

10 years of Sandpit and Sandpit v4 released

10 years of Sandpit and Sandpit v4 released

News 6 comments

In planning since 2010 and in development for 3+ years, Sandpit v4 has been released to coincide with the 10th anniversary of the first release of Sandpit...

Half-Life : Echoes Release - Thank you

Half-Life : Echoes Release - Thank you

News 23 comments

A massive thank you to everyone who played and enjoyed my mod.

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XBLAH's Modding Tool

XBLAH's Modding Tool

Full Version 1 comment

A fantastic tool for creating and running mods.

boring force v2.0 update
Half-Life: Opposing Force

boring force v2.0 update

Boring-Force Full Version 1 comment

half life opposing force.boring force mod 2.0 update

boring force
Half-Life: Opposing Force

boring force

Boring-Force Full Version

difficulty level of the mod: medium.mod.v1.2 update comming soon

Goldsource Games FGD Collection
Half-Life: Blue Shift

Goldsource Games FGD Collection

Blue Shift Coop Script 1 comment

Contains, Half Life FGD, HL Blue Shift FGD, HL Opposing Force FGD, Team Fortress Classic FGD, Ricochet FGD, Deathmatch Classic FGD, Day of Defeat FGD...

Half-Life: Civve Duty

Half-Life: Civve Duty

Demo 6 comments

Half-Life: Civve Duty is a mod for Half-Life: Opposing Force where you play as Otis Laurey, a Level 1 Security Guard at Black Mesa, and you need to get...

SpirinityOP4 v0.4.0

SpirinityOP4 v0.4.0

Full Version 2 comments

WARNING: REQUIRES OPPOSING FORCE A buggy trial of OP4 merge. Buggy but works. Will be very clean soon.

Comments  (0 - 10 of 85)
doitall
doitall

Half-Life, Opposing Force, and Blue Shift have made it on to modded Nintendo Switch's ✌️😎

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knb128pl
knb128pl

Well Gearbox don't lie about new Half-Life experience.

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Nfsfan83
Nfsfan83

Opposing Force M136 At4

Opposing Force 80's action movies weapons pack

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coolmods1
coolmods1

opposing force in 2020

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RecycledDoom
RecycledDoom

I've gotten tired of not being able to reliably find games for old Gold Source (GoldSrc, HL1, Half Life 1) mods or Source (Half Life 2, HL2) mods, so I made a discord about just that. I am also trying to make this place an informational hub. I'm trying to centralize and unite the multiplayer mod communities for all of the various multiplayer mods out there. We play a mod of the week every Friday/Saturday.

Check us out.

Discord.gg

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GetSillyDownInPhilly
GetSillyDownInPhilly

It's surprising this expansion pack is gonna turn twenty this year!

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jonatasv
jonatasv

a guy from the modb community made a unofficial blue shift port for ps2, it will be possible to leave an unofficial port of opposing force for ps2
his name is supadupaplex
I also saw and already played a game that you enter into the skin of a black table visitor, the name of the game is half life visitors, he is in this group to download, works only via steam, it will be possible someday convert it to ps2.
Nothing, as you can dream

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Leonioruc
Leonioruc

One of the best expansions of the original Half-life story.

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