File Extension GM3

  • Full name
    Heroes Of Might & Magic III Saved Game
  • Developer
    The 3DO Company
Have you encountered a problem with a GM3 file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a GM3 file here. In the further part of this page we have added a list of programs that should open your GM3 file. It is enough you choose a proper application for your operating system, download and install it.

Programs which can open a GM3 file

How to open file with GM3 extension?

In order to open a file with GM3 extension one of the following programs must be installed on user’s system. If a problem with opening GM3 file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with GM3 files, follow the instructions below.
Install Heroes of Might & Magic III: The Restoration of Erathia or other program from the list

Most often resolving problems with opening GM3 files is very simple. Just install an appropriate program that supports such files. All of the listed programs support GM3 files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of GM3 files or offer file conversion options, but may not be capable of editing such files.

Set Heroes of Might & Magic III: The Restoration of Erathia as the default program for opening GM3 files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate GM3 files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Heroes of Might & Magic III: The Restoration of Erathia applications is not on the list, select "Browse" option in order to manually locate the directory where Heroes of Might & Magic III: The Restoration of Erathia has been installed.


Check the section that lists most common problems with GM3 files

Sometimes problems with opening GM3 files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • GM3 files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open GM3 files (should that be the case, please contact your system administrator or IT specialist)
  • GM3 file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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