Asset Definitions

Unturned asset definitions associate game data with Unity asset bundles. They are stored in .dat or .asset files.

For information about the file format please refer to Data File Format.


The body contains any class properties. Individual asset type documentation elaborates on these.

ID uint16: 16-bit identifier. Unfortunately this ID must be unique within each category of assets (vehicles, items, animals, etc). Objects are the exception from this legacy restriction because they have been upgraded to fully use GUIDs.

Optionally the body properties can be placed into an Asset sub-dictionary. For example:

GUID [...]
Type [...]
        ID [...]
        Key1 Value
        Key2 Value

Is equivalent to:

GUID [...]
Type [...]
ID [...]
Key1 Value
Key2 Value

Unity Asset Bundles

Each Unturned asset is associated with a Unity asset bundle. If there is a master bundle in the file hierarchy that takes priority, otherwise a .unity3d bundle with the same name as the .dat file is used. There are several keys available to control the asset bundle:

Asset_Bundle_Version int: Indicates which version of Unity this .unity3d bundle was built for. When Unturned upgrades Unity versions it tries to maintain backwards compatibility based on this number. 1 is Unity 5.5, 2 is 2017.4 LTS and 3 is 2018.4 LTS.

Master_Bundle_Override string: Name of a master bundle to use rather than the .unity3d bundle or master bundle found in the hierarchy.

Exclude_From_Master_Bundle string: If this key exists the asset will look for a .unity3d bundle instead of the hierarchy.

Bundle_Override_Path string: Path within the master bundle to load rather than this asset’s file path.


Each asset looks for a localization .dat file in the same directory based on the current language. For example: English.dat or French.dat.

Loading Order

When scanning a folder for assets the game checks in this order:

  1. Is there a .asset file with the same name as the folder? e.g. Eaglefire.asset in the Eaglefire folder

  2. Is there a .dat file with the same name as the folder? e.g. Eaglefire.dat in the Eaglefire folder

  3. Is there an Asset.dat file?

  4. Otherwise, load all files with the .asset extension in the folder.