This book is, in a word, explosive. I was intimidated, at first, that this book would be to difficult for me to follow. I sometimes struggle with technological dramas and action packed stories, because I cannot follow the line of the action. Not so in this story. The author has done such a superb job in creating this alternate, virtual reality of the Demi-Monde, including maps laying out the different territories. The story mostly consists within this virtual world, and it has been brilliantly, and vividly created. I had absolutely no difficulty imagining it in my mind.
Similarly, the characters in the book, particularly the personalities residing in the Demi-Monde, are frighteningly realistic. The figures based on real historical figures were most striking to me, particularly the psychopathic "singularities". There is a tremendous amount of word play involved in the naming of the territories, ethnic groups, religions, and philosophies that make up the Demi-Monde, and it is all wonderfully clever.
The book is a dense read, full of nonstop action and many plot twists and turns. There were times it was so intense, I had to walk away for a few moments, yet I found myself pulled back. While not totally dystopian in nature, it will certainly appeal to fans of that genre, as well as those who enjoy technological thrillers.