Stay Awhile and Listen is an interesting one on the development of Diablo

https://www.amazon.com/Stay-Awhile-Listen-Legendary-Video-Ga...

The book Stay a While and Listen does a good job of explaining the background behind the pitch and subsequent changes that made Diablo what it is today: http://www.amazon.com/Stay-Awhile-Listen-Blizzards-Video-Gam...

You might also enjoy the Blizzard book:

Stay Awhile and Listen: How Two Blizzards Unleashed Diablo and Forged a Video-Game Empire [1]

[1] http://www.amazon.com/Stay-Awhile-Listen-Blizzards-Video-Gam...