From Back of the Box:
THE COMPLETE OBLIVION COLLECTION
The 5th Anniversary Edition includes the original award-winning game, plus Knights of the Nine, and Shivering Isles expansions.
With the empire ready to crumble, the gates of Oblivion open and demons march upon the land. You must find the lost heir to the throne and unravel the sinister plot that threatens to destroy all of Tamriel.
KNIGHTS OF THE NINE
A fallen King has been unchained from the darkness of Oblivion to seek vengeance upon the Gods who banished him. Only a champion pure of heart can vanquish the evil that has been released upon the land.
Enter the torn realm of Sheogorath - a world where Mania and Dementia reign. Do you have the strength to survive his trials, to tame a realm fraught with paranoia and despair, and wear the mantle of a God?
The 5th Anniversary Edition also includes:
A collectable metal case decorated with Daedric symbols.
MAKING OF OBLIVION
A behind-the-scenes documentary on the making of Oblivion.
OBLIVION GAME MAP
A full-color map of Cyrodiil and the Shivering Isles.