What is File Extension UPK?

UPK files are a type of Unreal Engine 3 Package developed for Unreal Development Kit by Epic Games. Commonly, Unreal Engine 3 Package files are found on user computers from China, and on PCs running the Windows 10 operating system. Google Chrome is their primary internet browser for the bulk of these users.

Other File Types Related to UPK Files

Extension	File Type Developer	File Category	File Type Description
.PSA	Epic Games	3D Image Files	Unreal Engine Skeletal Animation File
.J2L	Epic Games	Game Files	Jazz Jackrabbit 2 Level File
.XXX	BloodDolly	Encrypted Files	TeslaCrypt 3.0 Ransomware Encrypted File
.JPN	Microsoft Corporation	System Files	Windows Japanese Noise-Word List File
.J2H	Epic Games	Game Files	Jazz Jackrabbit 2 High Scores
.UHTM	Epic Games	Game Files	Unreal Tournament Data File
.J2A	Epic Games	3D Image Files	Jazz Jackrabbit 2 Animation Data
.UT3	Epic Games	Game Files	Unreal Tournament 3 Map File
.T3D	Epic Games	3D Image Files	Unreal Engine 3D Object File
.UMAP	Epic Games	Game Files	Unreal Engine Map File