This is an awesome product. At 374 pages with very little filler, the book covers everything you need to create and run a Kerberos Club campaign, including a complete set of Fate rules and lots of detail about the setting. This version of Fate, while mostly similar to standard Fate, has a very nicely done system for creating custom skills and powers. It manages to be wildly versatile, yet has a calculus that rarely leaves single digits.
In addition, Kerberos Club uses a power tier system that is unique to my knowledge, which adds a twist to the standard Fate dice and makes advancement seem more meaningful and sustainable over the course of a campaign.
If you're looking for a Fate book with a complete package, here you go.
[5 of 5 Stars!]