Doom 3 Source Code To Be Released This Year
An anonymous reader writes "John Carmack just confirmed during his QuakeCon 2011 keynote that the source code to Doom 3 will be released this year. The source drop will follow the release of their Rage game in October. Carmack has also challenged other game developers to release their old source code."
The reason for releasing source code as open source isn't so that you can download it for free, compile it, and have a working copy of Doom 3, it's so that people can look at the code, learn from it, port the game to new architectures or mod the source to add new features/take advantage of new technology. Several original games have been developed using previously released id source code: (Someone should really invent some kind of "Search" "Engine" for this internet thing...)
Nexuiz
Urban Terror
Tremulous
Sadly, I suspect that you won't appreciate the value of any of that, having phrased your questions the way you did.