This book is everything you could ever want out of a player's guide. It expands the understanding of Beast Psychology and it even reveals societies of Begotten, which to many fans of the Chronicles of Darkness or the World of Darkness is a known and beloved aspect of their games. I find them to be diverse and well written so that is something, and i like how the different societies can be grouped into larger categories. Cults of Incarnate Beasts, Societies devoted to the Dark Mother and more are to be found in this book.
It helps us with understanding the inhuman and primordial mindsets of the Begotten and how they react to various things, like being subjected to a Hero's Anathema. They help us with understanding the world view of each family and each hunger, from everything to other supernaturals to the pursuit of inheritance. 3 new Inheritances are added to the game, and i personally think that this ends the circle as each inheritance has now a contrasting one.
There is not only fluff however there are many new mechanical additions to the game. We have merits related to every notable aspect of the game; General Merits, Kinship Merits and Lair Merits. These merits introduce many new potential ideas to the game(like making a chamber in your lair into a small colony for humans and supernatural creatures). New lair traits are introduced to help further customizing your lair and several new avatisms and nightmares as well. And a nice helpful guide to create kinship nightmares.
However there are not just expansions to already existing mechanics that are introduced, there are entirely new mechanics introduced as well. Horrorspawn are perhaps the most extensive of the new mechanics introduced save one other. Horrorspawn are lesser children of the character's horror, but at the same time they are an extension of the character. They serve as the physical monsters that many have clamored for in beast. And afterall who wouldn't want to have a few children ;). The other major new mechanic that has been introduced are Obacus Rites, which i for one am a major fan of. They serve as a great storytelling tool and a way to make Beasts more religiously oriented. I could see a Brood of the Begotten and a Coven of Vampires join together over their shared faith in the dark mother and their shared magic of Obacus Rites and Cruac. My only complaint about the book comes here however, as i do think that there should have been added more rites to the book.
Lastly i have to talk about the two new families and hungers. We have the Inguma who are the Nightmares of the Other. They are the most human of the Begotten and they are the youngest as they came about at the dawn of civilization. They are the representation of the fear of Outsiders, the living result of Xenophobia. Honestly this makes them perhaps the most interesting family to me, as their horrors are usually Human in shape. They are the ones who do not fit in and see society from an outsider's perspective. The other family are the Talassi the fear of Confinement. They were cursed long ago to become Kidnappers and Jailers. They are the constrictor snakes, the horror which snatches your child out of bed or the warden kobold in the mountain. They are not bad, but i didn't connect much to them. As for the two new hungers: The Whispers and the Enablers. They are both nice new additions to the game and it helps clear up Collectors once and for all. Whispers are the hunger for secrets, they collect and expose the secrets of other people. The Enablers are the hunger for transgressions, they are the seductors and tempters of the Begotten Community. They feed on making other people go against their beliefs, cheating spouses, breaking a vow or a fast and so on are what they want.
Anyway so yeah this book is filled with great stuff both from a fluff and a mechanics perspective and it is a must buy for any potential Beast Player.
[5 of 5 Stars!]