Treasure Bag
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Expert Mode-Only Content: This information applies only to Expert Mode and Expert Mode worlds.
Treasure Bag
Treasure Bags are consumable items obtained in Expert Mode and Master Mode as a reward for defeating bosses. Its contents depend on the boss it comes from. It is opened by using either ⚷ Open / Activate when it is inside the inventory, or ⚒ Use / Attack while it is selected in the hotbar. In multiplayer, each player that deals damage to the boss receives one Treasure Bag upon completion. Treasure Bags are client-side and will despawn upon exiting the world. See Notes for details.
Each Treasure Bag contains the boss's usual drops from Classic Mode, along with one Expert Mode-exclusive item (highlighted items below) – with the exception of the Lunatic Cultist, Dark Mage, Betsy, and Ogre, who currently do not provide an Expert mode-exclusive item. Hardmode bosses' Treasure Bags additionally have a 5*1/20 (5%) chance to contain one random set of developer items (except for Queen Slime).
Expert mode-exclusive items all have the 
rarity, with the exception of 0x33's Aviators.
Click to jump to a specific Treasure Bag!
Content
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 DeerclopsInternal Item ID: 5111
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 Dark MageInternal Item ID: 3862
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 OgreInternal Item ID: 3861
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Internal rarity
Each Treasure Bag has an internal rarity, despite being Expert items, which always have a rarity.
Developer items
In addition to the above, all Treasure Bags from Hardmode bosses (except Queen Slime's) have a 5% chance to contain a random set of developer items, meaning that each set has a 0.28% chance of being in a Hardmode boss Treasure Bag. Obtaining a Treasure Bag in an Expert world, then opening the bag in a Normal world will retain the Treasure Bag's chance to yield developer items.
Red's set
Cenx's set
Cenx's Dress set
Crowno's set
Will's set
Jim's set
Aaron's set
D-Town's set
Lazure's set
Yoraiz0r's set
Skiphs's set
Loki's set
Arkhalis's set
Leinfors' set
Ghostar's set
Safeman's set
FoodBarbarian's set
Grox The Great's set
Expert-exclusive item details
| Bag | Boss | Item | Function |
|---|---|---|---|
.png){kind=small} |
King Slime |  Royal Gel |
Slimes become friendly. |
.png){kind=small} |
Eye of Cthulhu |  Shield of Cthulhu |
Double tap to dash, dealing damage. |
.png){kind=small} |
Eater of Worlds |  Worm Scarf |
Reduces damage taken by 17%. |
.png){kind=small} |
Brain of Cthulhu |  Brain of Confusion |
May confuse nearby enemies after being struck.
Gives the player a |
.png){kind=small} |
Queen Bee |  Hive Pack |
Increases the strength of friendly bees. |
.png){kind=small} |
Skeletron |  Bone Glove |
Throws Crossbones when the player attacks.
Throws empowered Bones, 33% chance to not consume bone. |
.png){kind=small} |
Wall of Flesh |  Demon Heart |
Permanently increases the number of accessory slots by one. Can only be used once. Only usable and only has effect in Expert Mode and Master Mode. |
.png){kind=small} |
Queen Slime |  Volatile Gelatin |
Damages enemies near the player when equipped. |
.png){kind=small} |
The Destroyer |  Mechanical Wagon Piece |
Used to craft the Mechanical Cart. |
.png){kind=small} |
The Twins |  Mechanical Wheel Piece |
Used to craft the Mechanical Cart. |
.png){kind=small} |
Skeletron Prime |  Mechanical Battery Piece |
Used to craft the Mechanical Cart. |
.png){kind=small} |
Plantera |  Spore Sac |
Summons spores over time that will damage enemies. |
.png){kind=small} |
Empress of Light |  Soaring Insignia |
Allows infinite flight times, increases flight and jump mobility. |
.png){kind=small} |
Golem |  Shiny Stone |
Greatly increases life regeneration when not moving. |
.png){kind=small} |
Duke Fishron |  Shrimpy Truffle |
A mount with endless flying, extremely fast in water or
when the rider is below half health. |
.png){kind=small} |
Moon Lord |  Gravity Globe |
Allows the holder to reverse gravity until another surface is hit. ( Can be toggled mid-air.) |
 Suspicious Looking Tentacle |
A Light Pet that senses nearby enemies, treasure, and ores. | ||
 Celestial Starboard |
An Accessory that allows flight and slow fall. |
Notes
- In singleplayer, a Treasure Bag is always dropped when a boss is defeated, regardless of how the player defeated the boss.
- In multiplayer, Treasure Bag drop is determined per player. Whether the Treasure Bag is dropped for a player is based on whether they dealt damage to the boss. Players who did not deal at least 1 point of damage to the boss will not receive a Treasure Bag.
- Additionally, damage dealt by NPCs' attacks, Explosive Bunnies, traps, Explosives, and lava is not accounted for any player. For example, if there is only one player in the server, and they only use said damaging methods to kill a boss, a Treasure Bag will not be dropped.
- However, damaging items that involve player interaction, such as Bombs, Cannons, Inferno Potions, Spore Sac, etc., will count as player-dealt damage.
- Treasure yields are considerably higher in multiplayer - multiple bags are handed out, with each containing the entire reward of a kill, and drop rates on the boss's unique items are often doubled.
- Trophies are not obtained from Treasure Bags. Instead, they are dropped separately from the boss itself, and will only drop one at a time in multiplayer.
- Pre-Hardmode Treasure Bags can drop developer items in a Celebrationmk10 world.
Tips
- In multiplayer, it is advisable to open Treasure Bags in a quiet area if the player has a full inventory, as the delay in item pick up can cause items to be picked up by other players.
Trivia
- In multiplayer, if player A disconnects from the server after dealing damage to a boss, the next player who connects to the server (player A themselves, or another player) will get the "qualification" for dropping the Treasure Bag. For example, if player A reconnects after another player has already connected, player A will not be able to get the Treasure Bag.
- The Moon Lord's Treasure Bag is the only one to include three / two Expert Mode items.
- It also does not contain any coins.
- Betsy's Treasure Bag is the only (obtainable) bag that does not have an Expert mode item. It also does not contain coins, but Defender Medals instead.
- The Lunatic Cultist, Ogre, and Dark Mage have sprites for a Treasure Bag, even though they do not drop one.
- Unlike the Lunatic Cultist's Treasure Bag, the Ogre and Dark Mage do not have data assigned to their Treasure Bags, as attempting to hack in either one will cause them to disappear from the player's inventory instantly.
- Queen Slime's Treasure Bag is the only Hardmode Treasure Bag to not drop developer items.
- Treasure Bags are referred to as "Boss Bag" in their Item IDs.
History
- Desktop 1.4.3:
- Added Deerclops' Treasure Bag.
- All Treasure Bags now display the name of their related boss in parentheses (instead of only "Treasure Bag").
- Desktop 1.4.2.3: Fixed missing tooltip in Queen Slime's Treasure Bag.
- Desktop 1.4.0.1:
- Dropped Treasure Bags now have a special light effect around to highlight them.
- Added Queen Slime and Empress of Light's Treasure Bags.
- Sprites updated.
- Added Ghostar, Safeman, FoodBarbarian and Grox the Great's sets to the drop pool.
- Added Celestial Starboard to Moon Lord's Treasure Bag.
- Added Arkhalis to Arkhalis' set.
- Desktop 1.3.5.1: Fixed Betsy's Treasure Bag having an incorrect name (was "ItemName.BossBagBetsy").
- Desktop 1.3.5: Leinfors' and Arkhalis's sets added to the drops.
- Desktop 1.3.2: Eye of Cthulhu's Treasure Bag will now contain 0x33's Aviators if the player plays as a Hardcore character.
- Desktop 1.3.1: Plantera's Treasure Bag now has a chance to contain the Seedler.
- Desktop 1.3.0.4: Fixed Treasure Bags disappearing after death.
- Desktop 1.3.0.1: Introduced.
- Console 1.0.933.1: Introduced. (
)
- Console 1.0.750.0: Introduced. (
)
- Switch 1.0.711.6: Introduced.
- Mobile 1.3.0.7: Introduced.
Expert Mode items
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Treasure Bags - Royal Gel
-
0x33's Aviators () - Shield of Cthulhu
- Worm Scarf
- Brain of Confusion
- Hive Pack
- Bone Glove
-
Bone Helm - Demon Heart
- Volatile Gelatin
- Mechanical Wagon Piece
- Mechanical Wheel Piece
- Mechanical Battery Piece
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Mechanical Cart - Spore Sac
-
Witch's Broom - Shiny Stone
- Shrimpy Truffle
- Soaring Insignia
- Gravity Globe
- Suspicious Looking Tentacle
- Celestial Starboard
Consumables:
-
Potions (
Buff potions) -
Weapons -
Ammunition -
Seeds -
Materials -
Other
Categories:
- Expert Mode content
- Exclusive content
- Desktop content
- Console content
- Mobile content
- Switch content
- TModLoader content
- Grab bag items
- Drop items
- Consumable items
- Items of rarity Rainbow
- Items of rarity 1
- Items of rarity 2
- Items of rarity 3
- Items of rarity 4
- Items of rarity 5
- Items of rarity 6
- Items of rarity 7
- Items of rarity 8