from the Kolbold Quarterly site:
"A great sourcebook for any Pathfinder game that's headed below the waves and seeking to explore the sunken realms, be they Azlanti ruins, aboleth cities, or something worse!"
—James Jacobs, Paizo Creative Director and co-author of Lords of Madness
Sunken Empires is a treasure trove for anyone fascinated with lost civilizations and ancient magic, from GMs who want to place the technology of lost civilizations, run astonishing undersea adventures, expand their aboleth lore — or just sink an inconvenient continent to players who want more choices for their class, their caster, and their gear.
Sunken Empires supports aboleth-centric, Atlantean, and similar adventures with technology and lore for any civilization, lost or otherwise, and creatures from the Underdeep.