File Extension Library


.3DO File Extension

  • Developer by: Cavedog Entertainment
  • Category: Game Files

What is an .3DO file?

.3DO file extension is created by Cavedog Entertainment. .3DO has been classified as Game Files.

.3DO is Total Annihilation object

The 3do file extension is related to Total Annihilation a real time strategic computer game for Microsoft Windows and Apple Mac systems developed by Cavedog Entertainment.

The 3do file contains in-game models of objects.


How to open:

3D Object Converter is capable to view content *.3do files.

How to convert:

Use 3D Object Converter to export *.3do files to other formats.

How to Open .3DO file on different platforms

Open .3DO File on Windows

  • Right-click a .3DO
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .3DO file and Select check box "Always use this app to open .3DO files" Press "Ok"

Open .3DO File on Mac

  • Right-click (or Ctrl + Left-click) the .3DO file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .3DO File on Linux

Right click on the .3DO file, choose "Open with" and select a program from the list above

Open .3DO File on iPhone

Select a file. If you don't see an application to open the .3DO file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .3DO File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .3DO files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .3DO files

  1. You need to update the application that you normally use to open .3DO files. Only the latest version of the software supports the current .3DO file format
  2. You need to check the .3DO file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)