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The File Format Database

Search over 10,000 file extensions and software programs.

Developer: Epic Games

.USX File Extension

Unreal Static Meshes

Discover the ‘.USX file extension’: Its origins, structure, advantages, disadvantages, how to open, and convert it across different operating systems.

.USA File Extension

Unreal Saved Game File

Explore the .USA file extension: Its origin, history, structure, advantages, and methods for converting and opening on different OS.

.UPK File Extension

Unreal Engine 3 Package

Explore the .UPK file extension: Its origins, structure, advantages, disadvantages, and how to open or convert it across different operating
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