The Shivering Isles expansion pack for The Elder Scrolls IV: Oblivion is now available to download from the Xbox Live Marketplace.
Play the official expansion for Oblivion – the 2006 RPG and Game of the Year. Shivering Isles features more than 30 hours of new gameplay as you are sent to explore the realm of Sheogorath, the Daedric Prince of Madness. Shivering Isles adds to the existing world of Oblivion, so you can continue playing with your existing save game/character, or create an all-new character just to explore the new content in Shivering Isles. New quests, creatures, weapons, armor, ingredients, and more await in the land of Mania and Dementia.
The expansion will cost you 2,400 Microsoft Points and is 993.75 MB in size. The price isn't too bad when you compare it to the additional 30 hours of gameplay that you get, along with 10 new achievements to complete.