Curious Creatures, Fat Goblin's first print product for Castle Falkenstein, is a fine addition to the line and gives me great hopes for its continuation. It ably follows the style of prior books in combining a running fictional narrative with in-game asides and rules material. Although the bulk of the book is a "monster manual" with listings of creatures and their game traits, it is also packed with setting and adventure ideas and includes a small, but substantial appendix of Host Characters and Dramatic Character archetypes.
It's a triffle odd that the print-on-demand edition has no spine text. I'll also note my initial print copy had a registration error on the cover, but Fat Goblin was quick to respond and offer a replacement copy, which corrected the problem.
If you are a fan of Castle Falkenstein, then you most definitely want a copy of this book. I look forward to the publisher's upcoming offerings for the game.