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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  (2280 - 2290 of 3,502)
UnknownMerc Sep 9 2010 says:

wow im waiting this and the black mesa source like crazy!!!
btw is there a blue shift remake?

+2 votes     reply to comment
ArturoPahua Sep 9 2010 replied:

Yes Sir, Guard Duty


+2 votes     reply to comment
UnknownMerc Sep 10 2010 replied:

wow lol all the 3 hl1 games have theyr remakes
just wow

+2 votes     reply to comment
Demenzuz Sep 9 2010 replied:

Yes it's called ''guard duty'' :D

+3 votes     reply to comment
akak88 Sep 8 2010 says:

looks awesome,just wanted to say what i miss in a mod is a rifle,maybe people don't miss it maybe just me,and when i mean rifle i mean like kar98k.

-3 votes     reply to comment
ArturoPahua Sep 9 2010 replied:

We love rifles too!! and we have one: the M40A1 Sniper Rifle

+3 votes     reply to comment
Black-Operative Sep 8 2010 says:

Very cool!

Everything is good but the Gonome still needs a bit of polishment.

There are moments in which you can see sharp polygon edges between the meat clothing.

+3 votes     reply to comment
nrd2001 Sep 8 2010 replied:

you are correct sir. I haven't finished merging the verts around the clothes so I am just using a simple smooth bind with a few modifications so we could show the animations as best I could for the MR.

The final version should be a lot better, well spotted.

+4 votes     reply to comment
Yuri69 Sep 8 2010 says:

One of the best upcoming SP mods. Keep it up!

+2 votes     reply to comment
WarlockSyno Sep 8 2010 says:

This is so epic... This is no ordinary mod. I would consider this a AAA game.

+4 votes     reply to comment
Phenixtri Sep 7 2010 says:

there is an M4 I saw it in one of the videos. god forbid them from removing it >> both the MP5M203 & M4M203 were iconic in the original HL games both pre & post HD versions.

-1 votes     reply to comment
DragonNOR Sep 8 2010 replied:

MP5 was standard for HL and Opfor, The M4 didn't arrive until the HD pack. Having both wouldn't really serve any function imo.
But we're looking into it :)

+2 votes     reply to comment
Unknown12345678900 Sep 7 2010 says:

No m4?I hope there will be.Please answer.

0 votes     reply to comment
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