Shivering Isles has been released in several formats. The expansion's content is the same in each of these different formats, although some formats do not automatically include the latest patch, installation of which is necessary to fix Oblivion's Reference Bug.
* The GOTY (Game of the Year) edition of Oblivion includes Shivering Isles and Knights of the Nine. This is a complete release of the game and does not require that Oblivion already be installed. All GOTY editions include the latest patch.
o The GOTY edition has been released for PC, Xbox 360, and PS3.
* A retail disc containing Shivering Isles as an expansion is available for PC, Xbox 360, and PS3. Oblivion must already be installed on the computer/console for this retail disc to work.
o The PC retail disc was released in March 2007. This disc does not include the latest patch; PC users should be sure to download and install the most recent patch.
o The Xbox 360 retail disc was released in October 2007. It includes the latest patch and also includes Knights of the Nine.
o The Playstation 3 retail disc was released in November 2007.
* The expansion can be downloaded from Xbox Live Marketplace on Xbox 360 or the Playstation Store on Playstation 3.
o The Xbox 360 download does not include the patch, although any console that is connected to Xbox Live should automatically download all current patches (the patch article includes details on how to confirm whether or not an Xbox 360 has been patched).
* It is not possible to download Shivering Isles for the PC, unless you are playing Oblivion using Direct2Drive.