Home : File Types : UPK File

.UPK File Extension

FREE DOWNLOAD Open over 300 file formats with File Viewer Plus.

File TypeUnreal Engine 3 Package

DeveloperEpic Games
4.4 (34 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryGame Files


This file is saved in a binary format, which requires a specific program to read its contents.


File used by Unreal Engine 3, a free gaming engine used to develop popular games such as Unreal Tournament 3, Mass Effect, Mirror's Edge, and BioShock; serves as a file container which includes various types of game files; may contain 3D models, textures, maps, music files, game settings, and other files.

More Information

UPK files are used to load on-demand content while playing a game. They can be created and edited using the Unreal Development Kit (UDK).

Programs that open UPK files
Epic Games Unreal Tournament 3
Epic Games Unreal Development Kit
Updated 11/23/2011

FileInfo - The File Extensions Database

This page contains information about the .UPK extension and its known file associations. Our goal is to help you understand what a UPK file is and how to open it.

The Unreal Engine 3 Package file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know!