From Bethesda Softworks: The 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. You'll encounter more than a dozen new creatures including hideous insects, Flesh Atronachs, skeletal Shambles, amphibious Grummites. Throughout your adventure, you will discover all new items, ingredients, spells, and more, and have the talented craftsmen of Crucible and Bliss forge new armor and weapons just for you.