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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

.UPK File Extension

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File TypeUnreal Engine 3 Package
DeveloperEpic Games
Popularity
4.5 (2 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryGame Files
File Format Description

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.

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).

Program(s) that open .UPK files
Updated 11/23/2011