Dungeon Treasures are a type of item that were uncommon to rare drops from certain dungeon bosses. As of Release 9 (Jan 2013), some dungeon bosses were able to drop pieces of treasure sets that are unique to the dungeon. The individual treasures and complete sets had no official use, but were used in temporary quests at The Tinkerer starting from November 2019. These quests have since been removed, and all dungeon treasures were removed as drops from enemies, although they are still obtainable through trading with other players. Due to their relatively high feed power for tradable items (along with the former soulbinding of all untiered items), many players chose to feed them to their pets.
NOTE: Some treasures say “double-click to equip” when you hover over them. Whether this is a sign that treasures were intended to later be used as equipment, or if it is just an error in coding, is not known.
Tarot Card treasures were added in Release 23.1.0 (Aug 2014) and were usable whenever The Alchemist (another removed feature) was active; for more information on those see the Tarot Cards page. These have also been removed from the drop tables but remain tradable.