Operation: Black Mesa is a total Source remake of Half Life: Opposing Force. Using the Source engine, the developers plan to recreate the Black Mesa research Facility as it was seen by Corporal Adrian Shephard of the H.E.C.U. Half-life: Opposing Force is still an amazing game, although it's not nearly as amazing as it was when it was released.

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Dev.blog summ(er)ary

Dev.blog summ(er)ary

News 13 comments

Why hello there! The Summer season is nearing it´s conclusion and it might be the right time to say goodbye to hot summer days with our short summary...

Guard Duty summer media update

Guard Duty summer media update

News 38 comments

We work hard even during hot summer days and we would like to share some of our work with you. Enjoy this new Guard Duty update.

Operation Black Mesa Update

Operation Black Mesa Update

News 19 comments

We are excited to share some more information and media. A brief look at what 2016 was like and what future might bring. Find out more in the update and...

Players Choice - Best Upcoming Mod 2016

Players Choice - Best Upcoming Mod 2016

Feature 28 comments

After 20 days of voting, it is time to present the top still-in-development mods as picked by you, the players.

Life Signs 2015

Life Signs 2015

News 34 comments

Operation Black Mesa and Guard Duty are back! It's been a very busy year and here's what we've been up to.

2014 Kickoff Update

2014 Kickoff Update

News 30 comments

The latest news on Operation Black Mesa and Guard Duty!

Best Upcoming Mod of 2013 Players Choice

Best Upcoming Mod of 2013 Players Choice

Feature 187 comments

The final votes have been tallied these are your picks for Upcoming Mods of 2013

Operation: Thank You

Operation: Thank You

News 9 comments

Thanks to everyone who supported us in year's MOTY competition!

Operation Black Mesa has been greenlit!

Operation Black Mesa has been greenlit!

News 33 comments

Opposing force remake for Source engine has been greenlit!

Progress update

Progress update

News 15 comments

What's new about Operation Black Mesa and Guard Duty? Both mods will release on MAC and Linux, and first multiplayer beta is releasing in Q1 2014.

Operation Black Mesa DEV.BLOG: Advanced AI

Operation Black Mesa DEV.BLOG: Advanced AI

News 52 comments

Our team proudly presents our new AI system we implement for our NPCs. Check out this dev.blog for more information and a video.

Greenlight report

Greenlight report

News 7 comments

We are back with short report and some new media. Read to know what we have for you in the near future!

Join the team!

Join the team!

News 16 comments

Join our team and help us to progress even faster! And we are in TOP 100 on Greenlight!

Greenlight update part 2

Greenlight update part 2

News 18 comments

Second part of the Greenlight update, introducing some in-game screenshots and... Announcing the release date for the multiplayer part!

Operation: Greenlight

Operation: Greenlight

News 16 comments

Operation Black Mesa, a remake of award-winning expansion pack Opposing force for Half-Life finally hit the Steam Greenlight!

Greenlight incoming for Blue shift and Opposing force remakes !

Greenlight incoming for Blue shift and Opposing force remakes !

News 29 comments

Few words about Greenlight, progress and more about Guard Duty and Operation Black Mesa.

Guard Duty and Operation Black Mesa- MOTY update

Guard Duty and Operation Black Mesa- MOTY update

News 10 comments

Tripmine studios decided to give you some new media from Operation Black Mesa and Guard Duty. Hope you enjoy them.

Report for duty

Report for duty

News 15 comments

Small update and invitation to our multiplayer session in the original Opposing Force: Multiplayer.

Operation Black Mesa and Guard Duty update

Operation Black Mesa and Guard Duty update

News 20 comments

Tripmine studios just released the very first update for Operation Black Mesa and Guard Duty. Check it out to find out latest info and media about the...

MOTY Players Choice - Upcoming

MOTY Players Choice - Upcoming

Feature 65 comments

Welcome to the Players Choice - Upcoming top 5 award for Mod of the Year 2011.

April Media Release

April Media Release

News 32 comments

Spring is here, and with it, the Operation Black Mesa April media release!

Players Choice - Upcoming Modification

Players Choice - Upcoming Modification

Feature 75 comments

Mod of the Year 2010 Players Choice - Upcoming Modification

Our progress & Voting

Our progress & Voting

News 13 comments

It's that time of the year again here on moddb and thanks to your votes we are again among the top 100! Now we here, on the Operation Black Mesa team...

Voice Acting Tutorial #3

Voice Acting Tutorial #3

Voice Acting Tutorial 2 comments

In this third and final VA tutorial, I cover the basics in editing your recorded file and preparing it for sendoff!

Voice Acting Tutorial #2

Voice Acting Tutorial #2

Voice Acting Tutorial 3 comments

In this tutorial we get down and dirty with the text content and record the line!

Voice Acting Tutorial #1

Voice Acting Tutorial #1

Voice Acting Tutorial 4 comments

Hello and welcome to this Voice Acting tutorial! I thought I'd write a short piece on what I consider to be relevant for a Voice actor in training. This...

September Media Release

September Media Release

News 39 comments

In this update we'd like to present a few changes that are going to take place in how we present our media in addition to showing the actual material...

May Media Release

May Media Release

News 73 comments

Hello everyone! Long time no read and write. I'd like to open this article by informing you all that the unconfirmed rumours that have been running wild...

New Years summary

New Years summary

News 6 comments

We figured we’d round up the year with a summary of OBM this year; the events that have taken place, developers that have come and gone and progress...

Don't forget to vote.

Don't forget to vote.

News 16 comments

It's that special time of the year again...Winter break you say? Yes, but no. You can start voting for the Mod of the Year 2009 and we would love to get...

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