Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .3do

2 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .3do file?
  • Which program can create the .3do file?
  • Where can you find a description of the .3do format?
  • What can convert .3do files to a different format?
  • Which MIME-type is associated with the .3do extension?
Total Annihilation 3D Object .3do file icon

Total Annihilation 3D Object

The 3DO file is a Total Annihilation 3D Object. Total Annihilation is a real-time strategy video game created by Cavedog Entertainment.
Detailed description not available
Category: Game Data files
Application: Total Annihilation
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Total Annihilation Main Unit Definition
Total Annihilation Data
Total Annihilation Features Data
Total Annihilation Unit Script
Total Annihilation Third-party Unit Data
Total Annihilation Mod Data
Total Annihilation Game Archive
Total Annihilation Demo Data
FreeDO Phoenix ISO Image .3do file icon

FreeDO Phoenix ISO Image

The 3DO file is a FreeDO Phoenix ISO Image. FreeDO is a Panasonic 3DO emulator.
Detailed description not available
Category: Disk Image files
Application: FreeDO
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:

Other types of files may also use the .3do file extension. If you have helpful information about .3do extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

CAD-3D Model
Grand Prix Legends Track Data
Altair FEKO 3D Artwork Data
OS/2 Floppy Disk Image
iGO 3D Landmark Data
ArtCAM Pro Project
Advent 3B2 Object Graphic
Digital Line Graph Optional Vector Data
GROMACS Essential Dynamics Output

The .3do filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

rdo (1), do (1), 3dp (1), 3dk (1), 3d0 (1), wdo (1), edo (1), 3o (1), 3dl (1), 3di (1), 3d (1)

Can't open a .3do file?

If you want to open a .3do file on your computer, you just need to have the appropriate program installed. If the .3do association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.3do

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android