From publisher blurb:
Five Adventures, Infinite Possibilities
A spider goddess seeks a safe exile on Earth. Dark deeds force the heroes to an urban hell—literally. A prison planet holds the secret of the illegal soul trade. The Firecrown, once worn by the first and last empress of the Divine Empire, may be on the verge of discovery, inflaming the political ambitions of a horde of demigods. The Earth is destroyed…but that might be a temporary affair.
In five adventures, Five and Infinity brings these scenarios to Player Characters. Spanning levels 1 to 16, the scenarios in this book can be played separately, or form the basis for a full campaign taking place in the Threefold setting.
Beyond the adventures themselves, this book also introduces the Infinity Engine, a set of random generation and choice-focusing tools that not only allow you to create new scenarios in minutes, but also create new planes of existence in Threefold’s greater Metacosm, to stage your adventures in, or as waypoints when characters travel from gate to gate, and world to world.