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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
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ZSG - Extension Details
Date Added: May 03, 2009
File Extension:  .ZSG
Description 1: .ZSG is the extension linked to the Zillions of Games Solution or Saved Game. Zillions of Games refers to the commercial General Game Playing system that Mark Lefler and Jeff Mallett developed in 1998. Rules for this game are specified using the Zillions rule language, a language described as LISPlike. The .ZSG file format is designed for handling mostly abstract strategy puzzles or board games.
File Type:   Game file
Mode: Binary
Program(s) to Open:  Open with Zillions of Games Solution or Saved Game program Associated link: Zillions of Games Wikipedia Page
Common:
Extension: