Planet Apocalypse is the world—your game’s world—as it teeters on the verge of its ultimate end. When the apocalypse comes, it leaves few heroes, and those that remain must desperately battle to preserve their world from utter destruction. Your player characters are those heroes, and there is no one else to save the day.

This book begins with an introduction to Planet Apocalypse and advice to the GM on how to present it and how to create a campaign out of it. Of particular interest to players, the second chapter outlines class options and feats for characters who have prepared for or survived the initial onslaught, while the third chapter contains spells and magic items for fighting fiends or that have been scavenged from defeated fiends.

The remaining chapters are for the GMs’ eyes only. The fourth chapter presents adventures that showcase Planet Apocalypse in action; these adventures use material drawn from the subsequent chapters. The fifth chapter explains the nature and dangers of the fiends and their invasion, the sixth chapter presents a wide variety of new fiends and other monsters, while the seventh and final chapter covers the fiend lords around whom the campaign revolves. Lastly, this book contains an appendix of encounter tables and an index of monsters by challenge rating you can use to build your own Planet Apocalypse encounters.