The essential elements for building a world? I hesitated in using a $12 credit to buy this one. It’s short. Really short. Audible says, 4 hours and 42 minutes, and I tend to not spend my audible credits on anything less than 10-hours long. But I fell for their marketing and took the creative leap towards creating dazzling worlds of my own. I shouldn’t have used my audible credit for this book.   maybe the PDF is a better choice First, let’s talk positives. Everyone contributing to this book has serious RPG cred. There are essays by Keith Baker, Wolfgang Baur, David "Zeb" Cook, Monte Cook, Jeff Grubb, Scott Hungerford, Chris Pramas, Jonathan Roberts, Janna Silverstein, Michael A. Stackpole, and Steve Winter. The essays are good and offer solid, but rather vague advice. I think beginners will get more out of this than experienced world builders and game masters. Ray Greenley does a good job with the narration, but still comes off sounding like the friend with the pleasant voice