Hydrophobia: Prophecy is an action-adventure game with a third-person view in a sci-fi setting. The game takes place in the future, in the middle of the 21st century, when the world has plunged into the chaos of the Great Overpopulation. Fertile lands were destroyed by rising sea levels and expanding deserts, causing hunger and poverty to spread on an unprecedented scale. Clean water is now humanity's most precious resource.