.DUN File Extension
File Type 1Dungeon Defenders Saved Game File
This file is saved in a binary format, which requires a specific program to read its contents.
Game file created by Dungeon Defenders, a tower defense multiplayer online game; saves information about a player's hero, including experience, items, and other game achievements; saved locally on the iOS or Android device, or on the local desktop computer.
File Type 2Dial Up Network File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
Internet connection settings file used by the Dial-Up Networking (DUN) tool included with some older versions of Windows; saves the phone number and modem settings for connecting to an ISP; often has a corresponding shortcut that is stored on the desktop for quick access.