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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.

RSS feed Downloads
Operation Black Mesa soundtrack

Operation Black Mesa soundtrack

5 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  (60 - 70 of 3,502)
Guest Sep 22 2015 says:

you have my and various others thumb ups on steam , continue working guys :D

+4 votes     reply to comment
Guest Sep 20 2015 says:

Is been 9 months, did this dead?

0 votes     reply to comment
Tabajara77 Sep 21 2015 replied:

Not dead, always having progress in silence. You can check out a recent media we published in our Facebook and Greenlight page weeks ago.
We will announce any more news in the future!

+4 votes     reply to comment
AdrianShaneWalsh Sep 12 2015 says:

I have a question. But I don't know if you've answered that one before. The first scene of Opposing Force. Remember that scene where Goose 3 under attack by an Alien Aircraft. And then our helicopter (Goose 7) is shot down by Alien Aircrafts, along with several other V-22 Ospreys. Are we gonna see more action? Will our helicopter do some evasive maneuvers? Will there be more excitement?

+5 votes     reply to comment
TheComedian.be Sep 15 2015 replied:

We found this an iconic scene and we will try to make it more exciting. I will put it this way: the HECU won't give up without a fight.

+8 votes     reply to comment
E8S Sep 12 2015 says:

Keep up the very good work. This is gonna be awesome *thumps up*

+5 votes     reply to comment
Guest Sep 6 2015 says:

Will you be able to switch between MP5 or M4 etc, in an options tab, because some of my friends like the M4 more.

But MP5 will always be my fav

+4 votes     reply to comment
redyoshi8300 Sep 8 2015 replied:

I asked them before about this, their answer was yes, you can switch the MP5 for M4 [and Glock for Beretta] in the Options.

+2 votes     reply to comment
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
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Operation: Black Mesa
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