Taken from the introductory text. The intention of this book is to provide some insight into how the great outdoors can affect characters in a d20 Modern Core Book and d20 Future setting. From characters surviving a freezing expedition into the Antarctic to a group of intrepid adventurers exploring a desert planet, these rules allow you to deal with all of these topics in one handy volume, instead of flipping between many books. Using the D20 SRD’s and some new rules, this book is a definitive work of survival in the outdoors for d20 Modern Core Book and d20 Future characters.