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!

                                                                                                     COMING SOON
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Blog RSS Feed Report abuse Latest News: 2014 Kickoff Update

15 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

Media RSS Feed Latest Audio
Downloads RSS Feed Latest Downloads
Elevator to hell

Elevator to hell

Jun 15, 2011 Music 1 comment

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 1,379)
Kub Sep 29 2006, 3:54am says:

Source is a trademark of VALVe Corporation and all mods/projects that have Source in their title are thought to be developing by VALVe...

+1 vote     reply to comment
YKWIA Sep 28 2006, 8:31pm says:

I'm wondering, Shouldn't this be Blue Shift: Source instead of Barneys Tales?

+1 vote     reply to comment
tankkiller Nov 28 2006, 8:59pm says:

oh and this mod looks great can't wait till its out

+1 vote     reply to comment
MR.sugar Aug 4 2007, 9:05am says:

Yeah i agree.. Guard Duty sound really much better than Barney's Tales.

+1 vote     reply to comment
slister33 Aug 31 2006, 12:34am says:

Nice work man. THis mod is gonna be as great as the otehr hl1 to hl2 remakes like Black Mesa source :D

+1 vote     reply to comment
jonte00 Aug 16 2006, 6:32pm says:

Do not make eny more chapers to Blue Shift.
But you could allways make an continuing story MOD on how Barney got to City 17 and what happen to Dr. Rosenburg

+1 vote     reply to comment
slister33 Aug 8 2006, 7:39pm says:

Do u guys have any english forums? Thanks.

+1 vote     reply to comment
Kub Aug 9 2006, 3:53am says:

WFW-PREDATOR, there will be no view from the third person. So, I suppose, your question is incorrect. May be we'll just use his face.
slister33, yup, there are some. Visit There is an English thread below the russian one. Also you can change language to English or the forum design

+1 vote     reply to comment
PhenXDesign Aug 12 2006, 5:59am says:

Why don't you make this mod with the help of other teams who are making the same thing ??
there is another teams like that :

It qould be quicker and better, don't you think ?

+1 vote     reply to comment
slister33 Aug 9 2006, 12:15pm says:

Thanks for the info Kub. Look forward to seeign you all on the mod forums!

+1 vote     reply to comment
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