From the back of the book: Dive into adventure. Atlantis, the complete sourcebook of the undersea kingdom. The legendary realm of Atlantis comes to life in this amazing sourcebook. The Atlantis sourcebook is packed with history, background, and story possibilities. You'll find complete backgrounds, descriptions and writeups of major Atlantean characters, creatures of the sea, spells, equipment, and much more. You can even create your own Atlantean characters! The story possibilities are endless; you'll add a new dimension to your Champions campaign with Atlantis! Atlantis provides a wealth of background and information for players and GMs alike. Inside you'll find: - New rules for underwater adventuring - 18 characters - Vehicles and equipment - A complete superhero adventure and seven adventure seeds - New martial art and racial package deals for Atlanteans - 10 undersea creatures - 18 spells of mighty Atlantean magic - And more!