The Elder Scrolls IV: Shivering Isles

Shivering Isles features more than 30 hours of new gameplay and allows you to explore an entirely new plane of Oblivion the realm of Sheogorath, the Daedric Prince of Madness. In Shivering Isles, you can continue playing with your existing save game/character, or create an all-new character just to explore the new content.