The following content is included in the The Elder Scrolls IV: Oblivion® Game of the Year Edition Deluxe

• Fighter's Stronghold Expansion
  Live the life of a noble warrior in this expansive castle with private quarters, grand dining hall, and a wine cellar.
• Knights of the Nine Quest
  Vanquish the evil that has been released upon the land. New dungeons, characters, quests, and mysteries await.
• Shivering Isles
  See a world created in Sheogorath's own image, one divided between Mania and Dementia and unlike anything you've experienced in Oblivion.
• Spell Tome Treasures
  Get these books and find low and high-level spells, as well as new powerful spells with multiple effects added.
• Vile Lair
  An underwater multilevel hideout for evil players to find refuge, providing your character with safe haven.
• Mehrune's Razor
  Conquer one of the deepest and most challenging dungeons in all of Cyrodiil to claim this fearsome weapon.
• The Thieves Den
  Uncover a famous pirate's lost ship and claim it for your own. Designed for stealth-based characters.
• Wizard's Tower
  In the frozen mountains of Cyrodiil stands Frostcrag Spire, a tower of wonders for your magic-oriented character.
• Orrery
  Harness the power of the stars. Rebuild the Orrery to unlock the secrets of this Mages Guild Inner Sanctum.
• Horse Armor Pack
  Tamriel is a dangerous place. Protect your horse from danger with this beautiful handcrafted armor.

The Elder Scrolls IV: Oblivion® Game of the Year Edition Deluxe presents one of the best RPGs of all time like never before. Step inside the most richly detailed and vibrant game-world ever created. With a powerful combination of freeform gameplay and unprecedented graphics, you can unravel the main quest at your own pace or explore the vast world and find your own challenges.

Update 14th June 2017

• added TES Construction Set
• added a potential workaround for incorrect timestamps that could cause problems with modding

NOTE: this might change your current load order if updated via GOG Galaxy.