All about EFG Files

The EFG file type is primarily associated with Gambit.

EFG	File extension: EFG
	File type:	Extensive Form Representation

What is an EFG file?

EFG files mostly belong to Gambit by The Gambit Project. Gambit is a library of game theory software and tools for the construction and analysis of finite extensive and normal form games.

How to open an EFG file

You need a suitable software like Gambit to open an EFG file. You need a suitable software like Gambit from The Gambit Project to open an EFG file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your EFG file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a EFG file directly in the browser:. Just drag the file onto this browser window and drop it.

Online EFG Text Viewer

Choose your .efg file to view

or drag and drop it here

Online File Viewer

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How to extract texts from EFG files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

You can extract texts from EFG file or capture a preview screenshot using our online EFG file viewer:

Just click the "Choose your .efg file to view" button on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Your file will be converted and downloaded.

Trouble Opening a .EFG File? These Steps Will Help

Because .EFG files come from various programs, they aren't universally openable.

Identify the Source: Files from economists or game theorists are often Extensive Form Representation models.
Check the Header: Inspect the first bytes in a text editor or hex viewer:
- EFG 2 text indicates a Gambit game tree.
- "PK" suggests a renamed ZIP archive.
- XML/JSON tags imply structured data.
Use the Original Software: The original program is usually required; try Gambit (The Gambit Project) or a text editor, and ask the sender if uncertain.
Use this Webpage: Drag and drop your file into our viewer to detect the format, extract readable text or metadata, and preview contents.

Technical Data for EFG File Extension

Identifier:

Hex: 45 46 47 20, ASCII: EFG (provided by TrID database)

Related files:

fefg, egf, egfg, cfg, exe, txt, nfg, neu

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: Gambit.ExtensiveGame
EXEFile: %ProgramFiles%\Gambit\bin\gambit.exe

an efg Extensive Form Representation is a special file format by The Gambit Project and should only be edited and saved with the appropriate software.

How to solve problems with EFG files

Associate the EFG file extension with the correct application.
Update your software that should actually open extensive form representations. Because only the current version supports the latest EFG file format. Search, therefore, e.g. on the The Gambit Project manufacturer website after an available Gambit update.
To make sure that your EFG file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .EFG file online - secure, fast, and no downloads needed.