This is a textbook intended to teach the rules of probability. The content is similar to what you would find in a first semester college level course in probability for students who have had some Calculus. It is organized somewhat differently from other texts, though. Instead of using a standard format, it uses an approach similar to that of modern role playing games. The idea is to emphasize that the reader is getting to enter another world of thought and ideas, and the game aspects fit nicely with probability.
Solutions to odd-numbered problems are given in the back of the book.