Both, Operation Black Mesa and Guard Duty are reimaginations of the Half-Life expansion packs Opposing Force (Operation Black Mesa) and Blue Shift (Guard Duty) and designed as total conversions for the Source engine.
What will I need to launch OBM / GD? How much will it cost?
Only a Steam account and the Source SDK base are required to run OBM / GD. The games as such will be completely free.
Are you still working on your projects? They seem dead to me!
Yes, we are working very hard, as a matter of fact! We keep in touch with our supporters constantly. You can always talk to us on the forum, check up on our ModDB page, Facebook or Twitter.
Release a media update!
Media updates are a very time consuming procedure, which is why we prefer to focus on mod development as our first priority.
Think of it this way: The less media releases, the harder we are working on our mods. Besides, releasing too much content out front will spoil your experience of the final product.
How much of your projects is done? How about a release date?
We cannot estimate the exact percentage of completion, neither an approximate release date. You can get a rough idea of our progress by looking at our media updates.
Until we are 100% sure we can make it and the exact release date is announced via a major update, don't bother asking developers about it. You will not get the answer.
Will you include the training missions in your games?
Yes, we will include Boot Camp (Operation Black Mesa) and Hazard Course (Guard Duty).
You are working on several projects simultaneously. How will you release them?
Operation Black Mesa and Guard Duty will be released separately, each with a different release date. At this stage, we cannot predict which one will be the first.
Will you release a demo or a beta?
We don't plan on releasing a Singleplayer demo, as it would slow down production considerably.
A Multiplayer beta is planned for Q1 2014. Stay tuned for more updates!
With Black Mesa released, will you use their assets? Will the games be consistent in terms of level design?
No, we won't be using Black Mesa content in any shape or form, for the following reasons:
We would have to scrap a lot (several years worth) of hard work.
Projects of this scale are a great opportunity to build a portfolio, being the main reason for many of us to contribute in the first place.
Using assets other than our own actually restricts and slows down our work. Our components are specifically tailored to the unique experiences we set out to create, rather than just a map pack.
Using their content without approval would be theft.
That being said, Tripmine Studios is in no way affiliated with the Black Mesa Modification Team.