.GMD File Extension

GMD files are typically packaged in .ARC Nintendo archive files and distributed with games. The files are not meant to be manually opened. Instead, the files are referenced during gameplay.

However, some 3DS gamers enjoy modifying gameplay and editing GMD files. These users extract GMD files from ARC files using utilities like ARCTool and convert the files to editable text files.

GameMaker allows developers to create games with a visual, drag-and-drop interface, where they can use pre-built actions and events to control how the game behaves, making it accessible for beginners and non-programmers. Developers who want more control over their project can also write custom code in GameMaker Language (GML). As developers work on their game, they can save their progress as GMD files, which organize all of the game's data within one file.

You can open GMD files with versions 5 to 7 of YoYo Games GameMaker. To open a GMD file, select File → Open.

If you need to open a GMD file with a recent version of GameMaker, open the GMD file with version 7 of the software, and then save the project as a GMK file. You can then open the GMK file with GameMaker: Studio and save it as a GMX file.

To create a GMD file, select "Messages," click "New," select File → Save As → A Document, choose a save location, name the file, and click Save.