2K Games and Bethesda have announced that "The Elder Scrolls IV: Shivering Isles" has been shipped and is now available in North American retail stores. The expansion will be released in Europe on the 30th.

"The Elder Scrolls IV: Shivering Isles features more than 30 hours of new gameplay and allows players to explore an entirely new plane of Oblivion - the realm of Sheogorath, the Daedric Prince of Madness. The Elder Scrolls IV: Shivering Isles adds to the existing world of Oblivion so players can continue with their existing save game/character, or create an all new character just to explore the new content.

Within the Realm of Sheogorath, players can explore the two extreme sides of the god's madness - the sublimely creative and the completely psychotic. Something is happening to the Shivering Isles and Sheogorath himself looks to compel players to be his champion and defend his realm and its inhabitants from destruction. The Elder Scrolls IV: Shivering Isles will challenge players to survive his trials, tame a realm fraught with paranoia and despair, and wear the mantle of a god.

The Elder Scrolls IV: Shivering Isles features a bizarre landscape split between the two sides - Mania and Dementia - filled with vast, twisting dungeons mirroring the roots of the trees they are buried within. Players will encounter more than a dozen new creatures including hideous insects, Flesh Atronachs, skeletal Shambles, and amphibious Grummites. Throughout the adventure, players will discover all new items, ingredients, spells, and much more. Or, they can have the talented craftsmen of Crucible and Bliss forge new armor and weapons just for them."