It is true, you are not dreaming Platform Nation Community, Black Mesa: Source is now available for download!
Here are the system requirements for you to take a look at.
Windows XP, Vista, or 7
6.9 GB of free hard drive space (not including *free* Source Sdk Base 2007, installed seperately)
Minimum: Pentium 4 3.0 GHz or AMD Processor, 1 GB RAM, Shader model 2.0, ATI 9600, NVidia 6600 or better, DirectX 8.1 compatible sound
Recommended: Intel core 2 duo 2.4GHz or AMD Processor, 1 GB RAM, Shader model 3.0, NVidia 7600, ATI X1600 or better, DirectX 9.0c compatible sound
Now for some information and important links you may be interested in:
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 didn’t fully live up to the potential of a Source engine port of Half-Life. 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. It should be noted that the project is being built from the ground up and is not a simple port of Half Life maps and models into the Source Engine. The idea is to remake the storyline used in Half Life into a new polished Source Engine version with new models, maps, soundtrack, voice acting and textures.
So what are you still doing here, you got go all the information you need to download your free game now!