Basic information about GBM file

When there is a problem with opening files with the file extension GBM（*.GBM or *.gbm）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the GBM file yourself.

There are 1 file types using the GBM file extension in our database. In the further part of this page, you will find detail information about all the GBM file with their brief description and a list of programs that support GBM file sorted by operating systems. The table below provides useful information about the GBM file extension. It answers questions such as:
  • What is the GBM file?
  • How to open a GBM file?
  • What programs do I need to open a GBM file?
  • What programs help to create and edit a GBM file?
  • How to convert GBM files to another file format?
  • How to convert another files to GBM file format?


1.Detail information about GBM file extension: Gameboy Map File

File type Gameboy Map File Category Developer Files
Developer Harry Mulder File format N/A
Description GBM file is a Gameboy Map File developed by Harry Mulder. File created by Gameboy Map Builder (GBMB), an application that allows users to design maps used in Gameboy games; contains map information such as the width and height of the map in tiles and number of property colors; includes the path to the .GBR tileset file that is used to create the map.
Software programs that will open, edit or convert GBM files

Windows		 Gameboy Map Builder



Can't open a GBM file?

When you click a file to open it, operating system examines the filename extension. If operating system recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When operating system does not recognize a filename extension, you receive the following message:

”Can't open this file: example.GBM”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the GBM extension without any issue.


Where I can download the application that support GBM file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How 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.


Can I change the extension of GBM files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a GBM file?

The reasons for the lack of the ability to open a GBM file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a GBM file. If there is still something wrong, you might want to check:

  • Whether the GBM file is damaged.
  • Whether the GBM file is incorrectly linked in the registry entries.
  • Whether the GBM file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the GBM file format is incompletely.
  • Whether the GBM file is infected.
  • Whether the drivers of the equipment used for opening a GBM file are up to date.
  • Whether your computer has enough hardware resources to open a GBM file.

If the GBM file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.