An Underworld Chest will spawn in the Underworld in the Hall of Judgment after completing all 10 quests there and defeating Dhuum. Each player in the party may open the chest and will receive items from the following list.
 Underworld Chest drops
Drop research is ongoing and may be found here.
These items are always awarded:
- Ghastly Summoning Stone (two in hard mode)
- Glob of Ectoplasm
- Lockpick (hard mode only)
- Passage Scroll to the Underworld (hard mode only)
- Phantom Key
Plus one (two in hard mode) of the following:
- A random inscribable rare item.
- A Diamond, Glob of Ectoplasm, Ruby or Sapphire
- Passage Scroll to the Underworld
- Dhuum's Soul Reaper1
- Miniature Dhuum1
- Miniature Smite Crawler1
1 These items are unique to this chest.
- The Miniature Dhuum, Miniature Smite Crawler, Ghastly Summoning Stone, and Dhuum's Soul Reaper were added as part of the November 19th, 2009 update.
- Before this update, the chest spawned near the Reaper of the Labyrinth.