Elder Scrolls IV: Shivering Isles - PC Travel across a bizarre landscape split between Mania and Dementia -- filled with vast, twisting dungeons mirroring the roots of the trees they are buried within Encounter more than a dozen new creatures including hideous insects, Flesh Atronachs, skeletal Shambles & amphibious Grummites Discover all-new items, ingredients, spells, and more -- have the talented craftsmen of Crucible and Bliss forge new armor and weapons just for you More than 30 hours of new gameplay, with an entirely new plane of Oblivion - The realm of Sheogorath, the Daedric Prince of Madness. This is an EXPANSION PACK for Oblivion 2006 game of the year. It requires the original Elder Scrolls IV: Oblivion to play.