The .vpk file extension is most commonly associated with the Verge3 game engine. This game engine was created to help developers design rpgs, although it can be used to create almost any game in the SuperNintendo or Genesis style. The VPK files are written in the C++ programming language, allowing for greater flexibility.
The .vpk file extension is also used for Steam NCF Valve Pak archive files and EverQuest II game archive files.
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