File Type : Mass Effect Game File Archive (EA International (Studio and Publishing) Ltd.)
Compatible with (Win10, Win8, Win7, Vista and WinXP)
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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).
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.
Software that can be used to open UPKfiles: