An xpk file extension is related to the WWE RAW wrestling computer game. An xpk file contains 3D model.
XPK file extension - WWE RAW model
What is xpk file? How to open xpk files?
File type specification:
The xpk file extension is used for a special graphics format contains 3D models that define how characters look in the WWE RAW wrestling game.
It can be edited to alter or "mod" the appearance of characters.
Some common xpk files include tf.xpk, ff.xpk, if.xpk, and sf.xpk.
This xpk file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.