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.

2014 Kickoff Update

2014 Kickoff Update

Mar 29, 2014 21 comments

The latest news on Operation Black Mesa and Guard Duty!

Operation: Thank You

Operation: Thank You

Dec 19, 2013 10 comments

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

Operation Black Mesa has been greenlit!

Operation Black Mesa has been greenlit!

Jul 28, 2013 33 comments

Opposing force remake for Source engine has been greenlit!

Progress update

Progress update

Jul 16, 2013 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

May 28, 2013 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

May 16, 2013 24 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!

Apr 12, 2013 18 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

Apr 1, 2013 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

Mar 23, 2013 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 !

Feb 16, 2013 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

Dec 8, 2012 12 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

Aug 26, 2012 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

Apr 30, 2012 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...

April Media Release

April Media Release

Apr 10, 2011 34 comments

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

Our progress & Voting

Our progress & Voting

Dec 4, 2010 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...

September Media Release

September Media Release

Sep 6, 2010 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

May 1, 2010 74 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

Dec 29, 2009 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 made...

Don't forget to vote.

Don't forget to vote.

Dec 22, 2009 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...

Ten years of Opposing Force

Ten years of Opposing Force

Nov 1, 2009 33 comments

Today is a special occasion in many respects as its the 10 year anniversary day for the original Opposing Force. Happy birthday Adrian Shephard!

Missing in Action

Missing in Action

Aug 18, 2009 8 comments

Operation Black Mesa is currently recruiting developers in almost every field!

April Media Release

April Media Release

Apr 25, 2009 46 comments

It's been a long time since you last heard from us, but now its time for another Media Release featuring four maps and concept art!

Christmas is here!

Christmas is here!

Dec 23, 2008 36 comments

Christmas is close at hand and before we take a short break (by newyears its back on track) and celebrate ourselves, we decided to show off some of our...

Unforseen Consequences

Unforseen Consequences

Dec 3, 2008 14 comments

Update of recent events and the unveiling of our new forum!

Media Release 3

Media Release 3

Oct 25, 2008 12 comments

It's been a month since last release, and THIS time, the HECU have moved into control and our website has been revamped!

Media Release 2

Media Release 2

Jul 8, 2008 4 comments

Here's finally Operation Black Mesa's second Media Release.

Operation Black Mesa got 5th place in MOTY 2007

Operation Black Mesa got 5th place in MOTY 2007

Jan 30, 2008 1 comment

Operation Black Mesa hot the 5th place in MOTY 2007 players choice ! We want to thank everyone who voted for us !

Preproduction Media Release 1

Preproduction Media Release 1

Dec 17, 2007 1 comment

This is a media release of preproduction content made for motY, we all hope you will enjoy it.

Project relaunched ! New Leader

Project relaunched ! New Leader

Sep 29, 2007 3 comments

Since a couple of day, the project is starting with a new breath. The new Leader, Eleval, will make everything to complete it. We will keep the same kind...

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Developer
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