I3D File Type

- The quick facts

What are I3D files and how to open them

Are you having problems opening an I3D file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an I3D file?

The .i3d file extension is most commonly associated with the Hidden & Dangerous computer game. The I3D files contain the computer game files used to play the game.

The .i3d file extension is also used for Instant3D document files.

How to open I3D files

Important: Different programs may use files with the I3D file extension for different purposes, so unless you are sure which format your I3D file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 5 different I3D openers which you will find listed below.

Last updated: July 13, 2020

Suggest another file format using extension I3D

While we know of one file format using the .I3D file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .I3D file.

Various apps that use files with this extension

These apps are known to open certain types of I3D files. Remember, different programs may use I3D files for different purposes, so you may need to try out a few of them to be able to open your specific file.

GIANTS EditorGIANTS EditorUser submitted
Integral Service ApplicationIntegral Service ApplicationUser submitted
Instant 3D ApplicationInstant 3D ApplicationUser submitted
Farming SimulatorFarming SimulatorUser submitted
Hidden and Dangerous DeluxeHidden and Dangerous DeluxeUser submitted
We have not verified any software that we know for certain will work with I3D-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with I3D-files. If you know one, please use the 'Suggest a program' link below and tell us about it!