Contents Item Property

The Contents Item Property is a passive item-property tag that declares an item to have internal contents — typically a bag-of-X loot reward whose internal item roster is defined in the item's metadata. The property is found primarily on loot bags (A Bag of Treasure, A Bag of Trinkets, A Large Bag of Treasure, etc.), on trick-or-treat candy bags, on Cleanup Britannia turnin packages, and on a small set of unique containers whose contents are randomized at the time the bag is opened. Items carrying the Contents Item Property cannot be unequipped to a normal pack until they're "opened" (the contents pour out and the bag itself is consumed); the property is the engine's way of marking the item as having a payoff to redeem.

The Contents property is invisible to the player as a typical tooltip — instead, the bag's tooltip lists the expected loot tier ("contains a collection of somewhat valuable items") and the player must open the bag to see the actual rolled contents. This is the canonical "slot machine reward" mechanic in UO — every bag opening is a fresh randomized roll within the bag's defined parameters.

Items with Contents Item Property

The property appears on a tight roster of canonical bag-shaped reward items:

Each bag class has a fixed loot table — opening 100 Bags of Treasure delivers a statistically-defined distribution of items. The randomization is per-bag, not per-character — two players opening the same bag class get independent rolls.

Common Items class

The most common Contents Item Property bag class — A Bag of Trinkets, trick-or-treat candy bags, the lower-tier loot bags — drops:

These are filler rewards — generally not build-defining, but useful for low-skill players who can't yet farm efficient gold sources.

Artifact Items class

Higher-tier bags — A Large Bag of Treasure, Champion Spawn artifacts — have a chance to drop:

The "rare drop" tier is the canonical attraction — collectors and serious farmers pursue Large Bags specifically for the chance at a Heritage-tier drop.

Rare Items class

The highest-tier Contents bags — Cleanup Britannia rewards, Heritage Token bags, Treasures of Tokuno premium tier — drop:

These are the collector-pursue tier — items with permanent collector value, often worth millions of Gold on Vendor Search.

How Contents Item Property is consumed

There is no "preview before opening" mechanic — the player commits to consuming the bag. This is canonical "you don't know until you open it" mechanic that makes loot-bag opening a recurring reward dopamine loop.

Contents Item Property in the loot economy

The bag-mechanic plays a specific role in UO's loot distribution:

The bag mechanic is the canonical "loot lottery" in UO — every bag is a small slot-machine pull that may surface a high-tier item.

Contents-property variants by event

Different events spawn event-themed Contents bags:

Event bags are time-locked — once the event ends, no more event-bag drops, and existing bags become collector items with their unique themed contents.

Property tooltip

The Contents Item Property does NOT typically display "Contents Item Property" in the player-visible tooltip. The bag's tooltip instead shows the flavor text ("contains a collection of somewhat valuable items") and the item icon. The Contents tag is internal metadata that only matters at the engine level — the player just sees a bag and knows from experience that it has loot inside.

See also

• Cleanup Britannia — the canonical event-driven Contents bag distribution
• Treasures of Tokuno — recurring event with themed Contents bags
• Gold — the most common Contents-bag content
• Anniversary — annual event with themed Contents bag distribution
• Heritage Token — the Veteran-Reward bag system
• Imbuing — alternative path for acquiring artifact-tier items not via bag drops
• Champion_Spawn — the Champion-tier source for higher-grade Contents bags