You are Barney Calhoun, a security guard at the Black Mesa Research Facility. Unknowingly to you, the next few hours of your shift will change your life forever...
Re-live the exciting adventure of Blue Shift on the award winning Source Engine and prepare for the shift of your life!
Welcome to Guard Duty.


- As a total conversion mod, Guard Duty aims to be composed of entirely custom content
- All original maps re-created and re-envisioned for better realism and gameplay.
- Some maps are enlarge/extended to create a more lengthy and immersive game.
- Improved AI, making enemies smarter and even more dangerous than ever before.
- More enemy encounters to keep the action fresh.
- Scripted scenes with all the original Blue Shift characters to help bring the story to life.
- Textures and models that will push the limit of the Source Engine, to bring you as much artistic detail as possible.
- All new voices, sounds and music.
- Multiplayer, which may (or may not) contain various game modes.

And much more!

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Living quarters outbound Hazard Course Concepts
Blog RSS Feed Post news Report abuse Latest News: 2014 Kickoff Update

27 comments by Uphys on Mar 29th, 2014

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

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Elevator to hell

Elevator to hell

Jun 15, 2011 Music 4 comments

An example from our soundtrack. This track is made by "Becket007".



Jun 15, 2011 Music 2 comments

An example of Xen track. This track is created by 8BitLord.

Sigh of relief

Sigh of relief

Oct 16, 2009 Music 6 comments

An example from our soundtrack. This track is made by "Mordekai"

Post comment Comments  (1330 - 1340 of 1,454)
Kub Apr 11 2007, 7:58am says:

claytonian, exactly. But we are not planning to release any bonus or episodic content. This will be big complete mod with some delicious features. Stay tuned.
h.e.v.zombie, why don't you learn some Albanian, right?

+1 vote     reply to comment
h.e.v.zombie Apr 10 2007, 5:04am says:

I really think this mod is dead cause the update are toooooooooo sloooooooow!
and lol@ the language on the homepage!
At least there must be someone say something about it, right?

+1 vote     reply to comment
claytonian Apr 9 2007, 2:35pm says:

So, what i am reading is that this will be a complete remake of BS (lol) with added content on the source platform? if so this is awesome! Also, if you come out with episodic content for this, please include a tool to link it all together or just add it to the main mod.

+1 vote     reply to comment
Medkit Apr 2 2007, 3:25pm says:

Also, it suggest an episodic and not a stand alone mod.

I know what kind of response I'll get: "Don't like the name? Then cook up a better one for your own mod."
So excuse me for my sniveling.

+1 vote     reply to comment
sutra_668 Mar 20 2007, 11:26am says:

Is the wey to turn your site in englisch i don't now meybe it's posible but the buton is in rus:P and one fing englisch forum sugestions i get error:P

Relly relations with word abaut this mod is big but put into box with russion neme on it that only one contynent can understent:P that suck:(

When you relese it and don't have englisch actors in it meke some substiels at lest that we can't understand what's going on:D

nice work kip up the got work you meke i now it's some time very hard. GOOD LUCK!!

Ja nie rozumie wszystkiego w angielskim jakieś 90% ale w ruskim to nawet 1% nie kapuje poleprzcie relacje tworząc choć strone po angielsku. Tak narzekamy na to choć o wersje angielską aktorów się nie martwie ktoś tam się znajdzie i ją doda albo co:P

+1 vote     reply to comment
GMan003 Mar 18 2007, 5:49pm says:

Everything about this is good.

Except the name.

Maybe "Long Shift" or "Guard Duty" or something. "Barney's Tales" sounds like a kid show.

+1 vote     reply to comment
Kub Mar 14 2007, 11:37am says:

Winterlord , I suppose you'll change your mind soon ;)
Btw, Russian is the orginal language of the mod. :D

+1 vote     reply to comment
Winterlord Mar 14 2007, 10:44am says:

Mmmh, is the characters don't speak english, I'm not really interested. I only play games in their original language, and a Soviet Black Mesa doens't seem right to me :p

+1 vote     reply to comment
Ihminen Mar 12 2007, 1:17pm says:

I hope the Characters will pseak english

+1 vote     reply to comment
Kub Mar 12 2007, 1:00pm says:

cobo10201, it's too early so say. English, I suppose, maybe Russian with subtitles.

+1 vote     reply to comment
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