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. Read More...

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Welcome to our first media update this year!

Read Full Article.

Multiplayer Beta Release Q1 2014 Cancelled

Our plan to bring you the multiplayer beta of Operation Black Mesa early this year didn't work out, regrettably. Several factors and circumstances forced us to completely keep it under the hood until further notice.

Multiplayer Progress

Multiplayer will feature classic maps such as Yard, Crossfire and Boot Camp as well as brand-new ones like Deptcharge and Gambit from day 1.
Currently in development: CTF mode and weapon placement.


Singleplayer Campaign

Development is running smoothly; those NPCs aren't going to animate themselves though! If you're interested in joining our team, check out the jobs page where you can find all positions currently open. We look forward to welcoming you on board!

Pit Worm's Nest

Remember Guard Duty (Blue Shift: Source)? We're making solid progress here too:

Living Quarters Outbound

OBM: The Video Game?

We've been given the option of developing our projects as full indie titles to be sold on Steam!
This opens up a whole lot of attractive possibilities to consider; however no decision has been reached yet as to this matter.

Alien Controller

M1A1 Tank

Thanks for your support in making all of this possible!

Until next time,
Tripmine Dev Team

Operation: Thank You

Operation: Thank You

1 year ago News 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!

2 years ago News 33 comments

Opposing force remake for Source engine has been greenlit!

Progress update

Progress update

2 years ago 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

2 years ago 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.

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Operation Black Mesa soundtrack

Operation Black Mesa soundtrack

6 years ago Audio 27 comments

This is our current soundtrack. It may or may not change in the future. "Oslo by night" by xhale. "Hundred Miles" by alexey v. "Weird view" by alexey...

Post comment Comments  (70 - 80 of 3,494)
XxBronyBoyxX Sep 4 2015 says:

I love how 1 person claim that this mod is dead when the devs posted a media update on their social media page about a few days ago.
pay some respect they're working on it!

+10 votes     reply to comment
Maggy_ Sep 10 2015 replied:

They posted it AFTER i said what i said.

-3 votes     reply to comment
epicstufff Sep 4 2015 replied:

Two people actually.

+9 votes     reply to comment
Rhiz324 Oct 2 2015 replied:

Correction: Two idiots actually.

+3 votes     reply to comment
Maggy_ Sep 4 2015 says:

I'm really disappointed in people who just call you things because you don't think the way they think. **** 'em

-4 votes     reply to comment
epicstufff Sep 4 2015 replied:

And **** you too buddy :)

+5 votes     reply to comment
Guest Sep 1 2015 says:

I have been following this mod and Guard Duty for quite some time and I'm very impressed with what I have seen.
Thank you Tripmine Studios for remaking these wonderful games. I don't know about others but for me personally, I'm not worry about the release date at all. I would rather see a complete work than a rushed one. The only thing that concerns me is the possibility of Tripmine Studios canceling the projects, well if there is that possibility to begin with.
I do have a few questions though. Is there any Adrian Shephard's artwork or wallpaper? If there is, will he look different from other gas masked HECU marines?

+3 votes     reply to comment
TheComedian.be Sep 5 2015 replied:

We don't have a wallpaper of Adrian Shephard atm. We post our artwork if the time is right. Have a nice day :)

+1 vote     reply to comment
AdrianShaneWalsh Aug 31 2015 says:

I don't know if you answered that kind of questions. If you didn't answer them before, please answer them now. Are we gonna see that some marines helping each other? When one of them dies, will the other one say something about it? Like ''Private, down''. Are they gonna talk to each other through the radio? Will they run out of ammo? Will they ask for help through the radio? Like ''I'm surrounded by zombies, I need help''.

+2 votes     reply to comment
TheComedian.be Sep 5 2015 replied:

Yes we will add alot of elements the the AI so they react on changes in the environment and behaviour of the player and other npc's. We found this a key-element in the half life world and we will expand this in our games.

+2 votes     reply to comment
AdrianShaneWalsh Sep 6 2015 replied:

Ohh, man. This is awesome. I can't wait to see the AI of yours. Because all what I've learned this far, I see it's gonna be legend-friggin'-dary. I have no doubt about that. You're awesome. And thanks for the reply, dude.

+2 votes     reply to comment
TheComedian.be Sep 6 2015 replied:

No problem :) we are here for our fans

+2 votes     reply to comment
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Operation: Black Mesa
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