From the back cover:
WELCOME TO THE WILDERLANDS OF HIGH FANTASY!
Whether you are a veteran Judges Guild fan or a new player just now discovering the Wilderlands, this Player's Guide introduces you to the classic Judges Guild epic fantasy setting and provides you with everything you need to begin a campaign in the Wilderlands, including the classic City State of the Invincible Overlord.
A DEADLY WORLD OF EPIC ADVENTURE!
This Player's Guide includes a large full color fold-out map and details on the history and background of the Wilderlands. At your fingertips is information on the important cities and geographical features of the Wilderlands as well as information on the gods and monsters unique to the setting. The Player's Guide also includes details on the City State of the Invincible Overlord, allowing you to run a campaign set in the Wilderlands right away!