Elegant and in-depth, WWN's tools and rules have given me a rich world and 3 months (so far!) of dense, terrific weekends. My table found it easy to pick up and intuitive to explore - and I can always stay a step ahead of them with so much sandbox advice inside. No other book has such a rich suite for creating and thinking about content instead of just playing it out.
I can say with certainty this is the definitive system for fantasy roleplay for my table, and I'd recommend it fully to anyone.
[5 of 5 Stars!]