12 Perils for the Living Land is not really a book; it is a very short supplement for Torg Eternity, specifically for the Living Land, as you might be able to guess from the title. The Living Land is a primitive reality, complete with jungles, dinosaurs, and lost ruins, which has primarily taken over parts of the USA and Canada.
Torg Eternity makes a lot of use of cards, including “Cosm Cards”, which can be played while in a certain reality to reinforce the conventions of that reality, and make each of the realities feel different in play. This is a very good idea, because the differences between realities are an important part of what makes Torg feel distinctive. One of the cards for the Living Land is “Perils of the Living Land”, which means that the group face a peril.