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Guard Duty is an upcoming conversion source modification of Half-Life 2 and a remake of Half-Life: Blue Shift. It is considered a companion to Black Mesa. Like Operation Black Mesa (Opposing Force Source), the two developer teams are not associated with each other.


Guard Duty began its development after Operation Black Mesa under the working title "Barney's Tales". Project updates may be found at [2].

In late 2008, the old team disbanded due to unknown reasons. The team didn't announce anything and the entire project went abandoned. Some of the team from Operation Black Mesa came to help revive the work, and one of their main level designers became the leader of the project, who then started contacting some of the former team members to release some of the work. However, they will start it from scratch. They released the teaser Media of the restarting project, only changing the title to Guard Duty a tribute to a former name of the original Blue Shift. [3].

On January 28, 2012, the team decided to merge with Operation Black Mesa and formed Tripmine Studios due to lacking developers and work. At the same time, It released the first update media for both projects.

On May 1, 2012, the team announced the second update of the media after the merging of the two team. [4].

On September 19, 2012, they released the cover art for the mod in Russian, posted on Facebook. [5].

On December 8, 2012, they released more screenshots and concept arts for the project in the following event of the 2012 MOD of the year. [6].

On February 17, 2013, they announced the greenlight vote for the both projects into Steam. At the same time, they release more screenshot for Projects to keeping much how it still alive. [7].

On May 28, 2013, they released a video demonstrating the AI.

On March 29, 2014, they released screenshots, concept art for chapters, and announced that alpha multi-player for the Operation Black Mesa have been canceled, as most of the work is not ready to be shown in the actual game-play [8]


The main objectives of this project:

  • A Complete re-creation of the each chapter including the Epilogue and the additional of new chapters that have never seen before in the original inspired from Barney's Mind.
  • Models and sequences will push the game engine to the limit.
  • Mutliplayer will be completely different then other modifications; rather than a Deathmatch, there will be Team Deathmatch and Capture the Flag. There will be a "running, surviving, and working together" gamemode, with the purpose of escaping the facility before it is completely destroyed. Just like Operation Black Mesa, this won't be in the early release.
  • New voice acting, spunds, and visuals.
  • Level design of the chapter will be expanded. It will utilize the Source Engine.
  • Remixed and all-new soundtracks.


Concept Art




Externals links