Oh man. This looks incredible.

Put simply, Half-Life and Half-Life 2 are two of the best single player shooters ever made. Incredible plots, graphics, and presentation in both. Of course, Half-Life 2 pre-dates its sequel by some six years and now, ten years after the fact, the graphics in the original HL pale in comparison. Don't get me wrong, it's still incredible. But it looks nothing like HL2.

Steam, the makers of both games, have put the Source engine behind Half-Life 2 up for developers to tinker with. And a group of folks have undertaken an incredible task: Recreate the entire original Half-Life game using the newer Source engine. The project is called Black Mesa, after the facility in which much of the original game takes place. And it looks absolutely incredible.

Check out the trailer for starters.

And then check out the About page for more info:

Black Mesa (formerly Black Mesa: Source) is a Half-Life 2 total conversion remaking VALVe Software's award-winning PC game, Half-Life. Utilizing the Source engine, Black Mesa will reintroduce the player as Doctor Gordon Freeman, along with the original cast of memorable characters and environments seen in Half-Life. Black Mesa was built and founded on the basis that Half-Life: Source was inadequate as the Source engine port of Half-Life, regardless of the intentions of VALVe Software. As such, Black Mesa was founded to fully reconstruct the Half-Life universe utilizing Source to its fullest potential in terms of art detail, level sizes and code features. This total conversion will not require Half-Life: Source to play - only a copy of any Source Engine game installed on Steam.

Oh man. I can't wait.