42 Entertainment recently released Cathy's Book, a story with an ARG built in. The book includes phone numbers readers can call as they progress and a few self-contained puzzles. Lee says that this is the company's first attempt at an ARG book, but that more releases are planned; he thinks that the main plot will always be delivered in prose, but he wants to add even more puzzles to unravel sub-plots.
We're uninterested in the ARG clothing line, but we're not big fans of collectable card games either; there's always something more to buy. But the ARG book sounds like an interesting twist on ARGs and fiction. Count us in.