3D model file used by World of Tanks, a war game that features battles between tanks; contains information about a 3D model used in the game such as a tank, armored vehicle, or building.

You can use the 3D Object Converter to convert PRIMITIVES files to a more common format such as the .3DS or .DXF file. You can then edit the format with an application that supports the format to which you converted the PRIMITIVES file. After making your changes you can convert it back to the PRIMITIVES format with the BigWorld Primitives Exporter and load it in the game. NOTE: The PRIMITIVES format was replaced by the .PRIMITIVES_PROCESSED format with the release of WoT 0.9.10.