From the back cover:
"This is a guide for players and Fates alike, designed to give a closer glimpse into the World of Synnibarr. It includes an excerpt from the story Mozart's Touch, set on the Worldship itself and centered around a young Vampiress of royal blood as she struggles with being the greatest mage ever born!
"The Guide contains details of Synnibarr's 50 character types, from stranded aliens to the living dreams of the Worldship. Included are cyborg Mutant Vampires and sleepless Mage Tigers, a race of martial artist spell users. Also revealed are descriptions of 20 new and unique races, from communal minds to Elven Ninja to resurrected Gurkha to Warchildren, offspring of the gods."