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 again everyone!

After 20 years of enjoying everything that the Half-Life community has had to offer, I am incredibly happy to finally release my own contribution to you all.
This Half-Life mod will let you experience the Black Mesa incident from a different perspective, with some insights into mysterious events which Gordon Freeman was not present for.

This is my first real modding effort, which I began around 5 years ago.
I initially had just hoped to make a short and simple campaign that I myself would enjoy, working on it sporadically over the years in my spare time.
I never expected it to be as large an undertaking as it turned out to be, and I also could have never anticipated that I would get married and become a father in the time I worked on this project! It has been a long journey, but very much worth it.

This mod has been created and tested for the Windows version of Half-Life on Steam, and it is not compatible with Half-Life Source or the old WON version of Half-Life.
Music is integral to this mod, and the soundtrack may not work if this is played any other way.
Lastly, due to the detail in some areas, I would recommend running this on a more modern computer than what Half-Life was designed for originally.

There are two ways to get the mod below, either a Windows installer which will find your Steam Half-Life directory automatically, or a zip file.
Please run this using the shortcut created for Half-Life: Echoes in your Steam game library, this avoids the "ED_Alloc: no free edicts" crash by increasing the entity limit. If you change games from within Half-Life this command will not be run.
Select your format below - setup instructions are included with each download.

ExeEchoes zip Download


I have put a lot of time, energy and care into this, and I hope that you enjoy playing this as much as I did making it!
Thank you to all who supported me while I created this.

Cheers,
James Cockburn

TROUBLESHOOTING
This mod is designed for the current Steam version of Half-Life on Windows.
I cannot guarantee it will fully function any other way.

Ensure that you run the game using the "Half-Life: Echoes" game library shortcut in Steam.
This increases the entity limit and avoids the crash "ED_ALLOC: NO FREE EDICTS"
Do not load Half-Life and change to Echoes from within the game.
This will skip the command to allocate extra memory.

You can set this manually if you wish, by adding
-num_edicts 2048
To the Steam launch options for Half-Life: Echoes.
To do this, right click on the game title, and select properties.
Then go to the "General" tab, then "Set launch options".
Or alternatively, add this to the Half-Life launch options:
-game echoes -num_edicts 2048
Remember to remove this if you wish to play Half-Life normally.

If this fails, try to load a saved game from a previous map and try to continue from there.
Report any issues that cannot be fixed by the above to the moddb page.
Moddb.com

20180720151747 1

20180720151923 1

20180720152239 1

20180720152146 1

Half-Life : Echoes Release Date and Trailer

Half-Life : Echoes Release Date and Trailer

News 49 comments

Playtesting is complete. A release is imminent. Come check out the trailer!

Half-Life : Echoes final polish

Half-Life : Echoes final polish

News 31 comments

A complete version of Echoes is being play-tested for final bug testing and polish. I will be releasing soon.

Help needed

Help needed

News 6 comments

Map developers needed.

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.

Add file RSS Files
Echoes v1.1.zip

Echoes v1.1.zip

Full Version 20 comments

Half-Life: Echoes .zip file - Version 1.1 - Requires Windows and the Steam version of Half-Life. This will not be compatible with old saves.

Echoes_v1.1.exe

Echoes_v1.1.exe

Full Version 8 comments

Half-Life: Echoes .exe file - Version 1.1 - Requires Windows and the Steam version of Half-Life. This will not be compatible with old saves.

Echoes_v1.zip

Echoes_v1.zip

Full Version 26 comments

Half-Life: Echoes .zip file - Version 1.0 - Requires Windows and the Steam version of Half-Life

Echoes_v1.exe

Echoes_v1.exe

Full Version 20 comments

Half-Life: Echoes .exe file - Version 1.0 - Requires Windows and the Steam version of Half-Life

Opposing Force 2 Soundtrack

Opposing Force 2 Soundtrack

Music

Soundtracks from the cancelled Half-Life 2 mod, Opposing Force 2.

Opposing Force 2 Mix

Opposing Force 2 Mix

Demo 4 comments

Every version of Opposing Force 2 mixed together into one file.

Comments  (0 - 10 of 77)
Leonioruc
Leonioruc

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

Reply Good karma Bad karma+2 votes
Lateralus10k
Lateralus10k

Opposing Force is Canon.


Fight me.

Reply Good karma Bad karma+2 votes
taakuu
taakuu

Hi all, if you want a great CTF mod with bot, it’s here : Moddb.com

Reply Good karma Bad karma+2 votes
Fakistill
Fakistill

Are there any subtitle mod?

Reply Good karma Bad karma+3 votes
_revenant.4K
_revenant.4K

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

Reply Good karma Bad karma+3 votes
Khatgami
Khatgami

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

Reply Good karma Bad karma+2 votes
Blue199
Blue199

or just didn't play them

Reply Good karma Bad karma+2 votes
ExtremeGamerXL
ExtremeGamerXL

Very good.

Reply Good karma Bad karma+2 votes
Guest
Guest

great mod

Reply Good karma Bad karma+1 vote
Riesbyfe
Riesbyfe

No, it's an expansion.

Reply Good karma Bad karma+4 votes
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Half-Life: Opposing Force
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Developer
Gearbox Software
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Highest Rated (3 agree) 10/10

One of the best Expansion Packs out there for any PC Game!

Jan 15 2018 by Khatgami

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