This book is designed to help you run a story-driven roleplaying campaign that combines classic fantasy dungeon crawling with the epic sweep of Greek mythology. It takes place in the world of Thylea— a forgotten continent where fey creatures make war upon civilization and gods walk the earth in the guise of mortals.

The campaign is designed for the 5th edition (2024 rules update) of the world’s greatest roleplaying game. It has been designed for a party of 4–6 heroes of level 1. By the end of this module, the heroes should be level 6. By the end of the entire campaign, they should be level 15 or higher.

Odyssey of the Dragonlords combines an epic story with a structured, open world. As the players complete major milestones in the story, new parts of the world will become available for them to explore. The part of the story presented in The Great Labors is divided into three chapters.

The goal of this campaign is to explore what it means to be a hero in a land where gods and Titans still walk the earth—where the forces of civilization are only just beginning to prevail against the monsters that haunt the seas and the forests. Your players will take on the role of mythic heroes charged with fulfilling a prophecy and confronting the Titans. Their decisions will shape the future and forever change the world of Thylea.