Introversion - developers of Defcon and Darwinia - have a treat in store for us. Following "unprecedented approval" from Microsoft, they've uploaded a paper trail documenting the journey a game takes from pitch to release.
And it is fascinating. Provided you find this kind of backroom stuff interesting, anyway. Available for perusal are bug reports, milestone reports and, most interesting of all, a log of some of the project emails between Introversion and Microsoft, including how the developer reacted to the ESRB leaking the game announcement and how Introversion flirted with the idea of releasing two Darwinia titles for Xbox Live Arcade before Microsoft said "no, thanks".