Atlantis Rising: Monstrosities Expansion

Atlantis Rising: Monstrosities is an expansion for Atlantis Rising (Second Edition) that offers these new challenges:
Medusa Unleashed, in which the gorgon Medusa turns Atlanteans to stone. Can you break her curse and recruit her to your side?
The Harpies’s Lair, in which three monstrous, birdlike creatures steal the resources and workers you need to build the Cosmic Gate. Can you defeat the Harpies and win back the treasures found in their lair?
Between Scylla & Charybdis, in which the monsters that have long doomed sailors leave their narrow straight and terrorize the shores of Atlantis. Can you satisfy their hunger and calm the waters surrounding the isle?
 
Four new mechanisms are introduced to the game:
Monsters
Allies
Magic Items
Locations
 
-description from publisher