All about FCB Files

The FCB file type is primarily associated with CryEngine Sandbox Editor.

FCB	File extension: FCB
	File type:	proprietary binary file

What is an FCB file?

FCB files mostly belong to CryEngine Sandbox Editor. FCB files serve specialized internal roles. The majority are used as Far Cry 6 game files that hold critical game data such as level layouts, asset configurations, and game settings. These files are not designed for casual viewing but are managed by dedicated tools like the CryEngine Sandbox Editor available via Ubisoft.
In addition, a smaller group functions as translation files. In this context, FCB files act as linguistic databases that store text strings and localization data. Such files are typically handled with specialized language tools provided by HAT2 and can be referenced at Ectaco.
Useful tips:

Backup your FCB file before making any edits.

Open game-related FCB files only with the proper game editor.

Use dedicated translation tools for editing linguistic FCB files.

For detailed inspection, consider a hex editor instead of a standard text editor.

How to open FCB files

You need a suitable software like CryEngine Sandbox Editor to open an FCB 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 FCB file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a FCB file directly in the browser:. Just drag the file onto this browser window and drop it.

Online FCB Text Viewer

Choose your .fcb file to analyze

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

FCB format details:

To view or edit FCB files you need to know the file format, because it determines how the data in this file is stored. Often, the file format can be deduced from the file extension or the initial bytes (called the signature). File extension, signature and file format must match; otherwise errors will occur when the file is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Below is our analysis of the FCB files:

The FCB file extension is not found very often and includes various formats for various programs. But the following two file formats are common:

• 40% of all FCB files use the same file format, which can be identified by the letters "nbCF" at the beginning. The contents of these files cannot be read by a human; only a computer program can interpret the data. The average file size is 19 KB with most files being between 360 bytes and 8 MB in size. It is a modern file type. Several words can almost always be found in the files, e.g. nbCF and entityarchetypeslibrary. A common filename is entitylibrary.fcb or entitylibrarypatchoverride.fcb. These files can be linked to nomadobjecttemplates and patch.
• 5% of all FCB files have the same signature fc0. These files contain neither text nor words, but only data. A typical file size is 16 KB. Several words can almost always be found in the files, e.g. Linguistic databases(c) 1990-2006 ECTACO,Inc.www.ectaco.com. Such FCB files store data about enel.

All other FCB files (55%) have no consistent format. Drag & drop your file here to see the file format and a preview of your FCB file!