Music done by the talented Joel Neilsen. You can download the trailer song and his other great work from his website here:
Black Mesa is a Mod made by a non proffiting group of individuals in their spare time, NOT VALVE.
Q. What build is this on?
A. Currently it is on the Orange Box build of the source engine (You are required to have at least one source engine game to play it. Portal, TF2, HL2, CSS, L4D, Ect.)
Q. Is this a remake of HL1?
A. Yes, though with MAJOR improvements to the look and feel of the game to meet todays standards.
Q. What platforms is it availible on?
A. It's a MOD so PC only.
Q. Can i buy it?
A. No, It is a completely free project in every respect.
Q. Will my computer be able to play this?
A. As long as you can play any orange box game (HL2:Ep2, TF2, Portal) you shouldn't have a problem.