The File Extensions Database

.M3 File Extension

  • Developer by: Blizzard Entertainment
  • Category: 3D Image Files
  • Format: Binary

What is an .M3 file?

.M3 is Blizzard MDX3 Model File

3D model used by StarCraft II: Wings of Liberty, a sci-fi real-time strategy game; created in Blizzard's MDX3 format, which is the successor to the .MDX file format used in Warcraft 3 and the .M2 format used in World of Warcraft; used for storing models for game units and structures for the Protoss, Terran, and Zerg races; also used for other game objects.

M3 files are commonly found within in .SC2ASSETS files, which are stored in Blizzard's .MPQ format.

Programs that open Blizzard MDX3 Model File
Blizzard StarCraft 2
Autodesk 3ds Max with M3 Import plugin
Blizzard StarCraft 2

How to solve problems with M3 files

  • Associate the M3 file extension with the correct application. On :
    Windows: Right click on any M3 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.M3 files". Mac: Right click (or Ctrl-click) the M3 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .M3 is Blizzard MDX3 Model File. Because only the current version supports the latest M3 file format. Search, therefore, e.g. on the Blizzard Entertainment manufacturer website after an available .M3 is Blizzard MDX3 Model File update.
  • To make sure that your M3 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.