Item

Items is a broad category for things that can be moved by players but don't move on their own. Items can have various properties, some of which can't exist on the same item. Each header below is a different property.

Can stack

Stacks of items are groups of up to 100 items with identical properties that behave as one item. Only items with the stackable property can stack with each other. Most things we describe about items will apply to stacks of items moving around as a unit. The number of items available in a stack is shown with a small number in the bottom right of the items graphic (except when it's on a tile). Stacks can be split by splitting a stack. Stacks automatically merge when an eligible stack is in the container the item is being moved into, but dragging an item onto a specific eligible stack prioritizes merging the targeted stack. Stacks will merge if thrown directly on top of an eligible item on the ground. If there's only room for some of the stacked items entering a container, the items capable of moving will move and the rest will remain in their original location. Some stacks have different graphics depending on how many items are in the stack. These graphics usually change when the stack size grows to 1, 2, 3, 4, 5, 10, 25, or 50.

Nailed down

Items can be "nailed down" to a specific tile. See tile for some more details about the behavior of nailed down items. They can't be moved. Being "nailed down" is not inherent to the item type, rather some items have that property and are unmovable as a result. Any item that isn't nailed down can be moved by dragging it with the mouse.

Can't carry

Items that can't be carried have no weight. They can not be moved into containers or be equipped. If an item transforms into a "can't carry" item, it will be placed on the tile outside the container or underneath the player carrying the container. "Can't carry" items can't be moved more than 1 square away from the player. This includes a lot of furniture and corpses. It also includes all obstructive items.

Can carry

Can carry items do have a weight. They can be moved into containers.

Container

An item that is a container has a volume that indicates how many items can go inside. If you look at a container it will tell you it's volume. Any "can carry" item can go inside of most containers. The weight of a container is the sum of it's base weight and the weight of all of it's contents.

. However "can't carry" items can be containers, in which case it doesn't display a weight.

Some special containers like store inbox and quivers restrict what items can be put inside them.

Equipment

Equipment are items that can be placed in one of the equipment slots. A character's equipment slots each function like a container with a volume of 1. The weight of the worn equipment item reduces the available capacity of character wearing it. Equipment is worn for the benefits conveyed to the wearer, for more information see page:equipment.

Store items

Any store item can not enter normal containers, only the store inbox and the depot.

Obstructive

Obstructive items cause the tile they're on to become obstructed. They're always "can't carry" items. Many of them are furniture and can be wrapped when inside a house. All(?) of them can be destroyed by using a melee weapon on them.

Graphic changes with location

These are rare, at least ones that can be moved by players are rare.

What appearance they have is determined by it's x/y/z? location. They're probably meant as an easy way of creating randomized terrain, and they're supposed to be "nailed down", but a few aren't.

Charges

Some items, usually amulets or rings, have charges. This usually indicates how many times they can perform their function before disappearing. You can check how many charges are left by looking at the item, or by the small number displayed on top of the item (if you have this enabled in the settings). Items like runes and potions do not have charges, instead each item in the stack can be used only once.

Duration type 1

Some items, often equipment, have durations. In the case of equipment, this usually tells how long it can be equipped before disappearing or transforming into a different item. In the case of non equipment, this usually tells how long it will exist. When a "duration type 1" item is not "loaded" it's time does not pass. This means when it's inside someone's backpack who is offline or inside someone's depot who is not at their depot currently, it's time does not pass. An item can't be both type 1 and type 2.

Duration type 2

Duration type 2 items are just like type 1, except the time is not displayed on top of the item and time elapses whether or not the item is loaded. This includes things like reward wall items that expire after a week.

Usable

Usable items trigger some effect when used. This includes food that disappears when succesfully eaten and things like musical instruments that can be used endlessly. Usable items share an invisible approximately 0.5 second cooldown. Usable items can not be "use-withable"

Use-withable

These items when used turn the cursor into a crosshair. When you click again on a valid target, it requests the server uses this item with the thing you clicked on. Clicking off in the dialogue box or other irrelevant parts of the GUI will cancel the request, so will pressing the escape key by default. All use-withable items share a 1 second cooldown with each other, this includes potions and runes.

Climbing

Some items, like crates and boxes, cause those standing on them to appear at a higher Z height (shifted up and to the left). If this stacked height exceeds a certain amount (around 3 boxes, or 2 trophy stands in height) a character may walk from the top of the stack to an accessible square on the the next floor up. A collection of items that stack tall enough to do this is known as a climbing kit.

Semi-obstructing

Semi-obstructing items, which usually also have the "Climbing" property, will not block the movement of players but can block the movement of some weaker monsters. These items also block the path finding when map clicking. Monsters that aren't blocked will move them out of the way, and if a place to move them isn't available the item will be destroyed. If the destroyed item a "Container", all of it's contents will be destroyed too. Many carriable flowers are semi-obstructing, making them a portable way to corral weak monsters.