An entrance to the Stygian Abyss has been discovered upon the world of Sosaria, hidden in the seething caldera of a newly-risen volcano. At first glance nothing more than a colossal web of dank caverns and oppressive dungeons, it houses an ancient city that acts as a barrier between the worlds of Sosaria and Tel Mur, home to the Gargoyles. Masters of Imbuing and Mysticism, these clawed and winged creatures find themselves facing certain destruction at the hands of the Abyss, forced to delve into the secrets of the lost city and the rift to their sister world...

Ultima Online:Stygian Abyss is scheduled to be released in 2009.