Wow. That's really all I can say to sum up this collection. Wow. I did not purchase the individual volumes and only became aware of the series recently when I found a listing for this book. As the description states, this book is essentially an overview of Warhammer's four Chaos gods. Now, there have been several books released covering similar territory, but never have I seen one so well done. The twin Realms of Chaos volumes put out by Games Workshop in the early 1990s are almost as good, but Liber Chaotica just oozes a style, atmosphere, and character unlike anything I've ever seen in a gaming suppliment. It's worth mentioning that this book contains absolutely no game rules for either Warhammer Fantasy Battles or Warhammer 40K (in fact, it makes no mention of the 40K universe). This fact makes it more a resource for players of Warhammer Fantasy Roleplay than the wargaming crowd. But my god, what a resource! The whole book is written as if it were penned by the Imperial scholar Richter Kless, a device that worked quite well in the old Earthdawn and Shadowrun suppliments from FASA. The idea is that you get an educated overview of Chaos from the perspective of a character who lives in the Warhammer world. What makes it work so well in Liber Chaotica is that Kless actually goes back and adds handwritten annotations to his work. Over the course of the book's five volumes, readers get to watch his sanity slowly deteriorate as he exposes himself to the subtle, corrupting influence of Chaos. The Horrors Sourcebook for FASA's Earthdawn was written (and written well) in the same fashion, but that book's relative brevity robbed it of the impact that Liber Chaotica manages to achieve.
The book itself is a work of art. It is well bound and lavishly (and, at times, disturbingly) illustrated. I simply cannot recommend it enough to anyone who has an interest in the forces of Chaos in the Warhammer world. Buy it before it goes out of print, you will not be disappointed.