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Guard Duty is the name of the second campaign in Operation Black Mesa and is an upcoming fan-made remake of Half-Life: Blue Shift developed by Tripmine Studios. It is considered a companion to Black Mesa, though 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 both projects on Steam. . [7].

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

On March 29, 2014, they released screenshots and concept art from both games in a media update. [8]

On January 16, 2017, A monthly update and media release was posted on the Tripmine Studios Forum.

On July 28th, 2018, A summer update and media release detailing the studio's progress on both projects was posted on the Tripmine Studios Forum.

On June 3rd, 2019, Another summer update and media release gave fans a much closer look at in-game weapon and character animations.  


The main objectives of this project:

  • A Complete re-creation of the each chapter.
  • 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. This won't be in the initial release.
  • New voice acting, sounds, and visuals.
  • Level design of the chapter will be expanded. It will utilise the Source Engine.
  • An all-new soundtrack.


Concept Art




Externals links

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