Unreal Engine Skeletal Mesh

The Unreal Engine is a video game development engine that has been used to create many popular video games, including Unreal Tournament, Borderlands 2, Mass Effect 3, and Fortnite. Developers using Unreal Engine versions 3 and below can import 3D model mesh data saved as PSK files into their projects.

Each PSK file contains a set of eight header-data pairs that define a mesh. These pairs include:

In addition to creating their own PSK files, developers and modders can extract PSK files from existing games, using various third-party modding utilities.

NOTE: Unreal Engine 4 users create and import meshes saved as .FBX files.

You can open PSK files with the following 3D modeling programs, after installing PSK-related add-ons:

A PSK import add-on for Blender is available here . Note that, while you can open and convert PSK files with Blender, you cannot edit them.

To import a PSK file into current versions of Epic Games Unreal Engine (Windows, Mac), you must first convert the file to an FBX file. You can use any of the following programs to convert a PSK file to an FBX file:

These programs can also convert PSK files to other 3D model formats. Remember that, to open and convert PSK files with Blender, Autodesk Maya, or Autodesk 3ds Max, you must first install a PSK import add-on.

Programs that open or reference PSK files

Updated: November 10, 2023