5 file types use the .tmd file extension.

What is a TMD file?

Document created by TextMaker, a word processing application that is part of SoftMaker Office; supports text, images, drawn objects, and page formatting properties; used to store authored documents.

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Category: Text Files

Nintendo Title Metadata File

A TMD file contains title metadata used to verify the integrity and run Nintendo 3DS, Wii, and WiiU games. It stores metadata about the file that contains the actual game data, such as an APP, 3DS, or CIA file, and is referenced to decrypt and verify the contents of the game data file to launch the game. TMD files are typically distributed by Nintendo Update Servers (NUS).

TMD files may store varying metadata depending on the console the game is created to run on. For example, a TMD file for a WiiU game contains the required WiiUOS version, whereas a TMD file for a 3DS game will not include that information.

Most 3DS, Wii, and WiiU gamers will not encounter a TMD file since it is referenced by the Nintendo console in the background when a game is launched. However, gamers who want to emulate a game on their computers will most likely see the TMD file (along with a TIK and CERT file) accompanying the main game data file.

Programs that open or reference TMD files

Updated: April 12, 2019

World Machine Datafile

A TMD file may also be a 3D world created by World Machine, a program used to procedurally generate terrain for video games. It contains a series of devices that World Machine uses to generate terrain. TMD files can be opened only in World Machine.

World Machine allows developers to procedurally generate realistic-looking 3D terrain for use in video games and other applications. To generate terrain, a developer links a series of World Machine devices together. These devices control how World Machine shapes the developer's terrain. Devices can be used to create new terrain, edit existing terrain, and export terrain to different file formats.

If a developer wants to save an in-progress or finished World Machine project, they can select File → Save World from the program's menu bar. This saves the developer's current world as a TMD file.

When a developer selects Build World from World Machine's menu, World Machine uses the device tree the developer has assembled to generate terrain. World Machine will also export the terrain in additional file formats, if the device tree includes output devices configured to export terrain.

NOTE: To view the devices a TMD file contains, view the file in World Machine's Device Workview. To view the terrain those devices generate, view the file in the Layout or 3D View.

You can open a TMD file in World Machine (Windows). To do so, select File → Open World... from World Machine's menu bar. Then, navigate to and open your TMD file.

Programs that open TMD files

Updated: October 18, 2021

PlayStation Game Model File

3D model used by some games for the PlayStation console systems; saves the geometry (vertices and shapes) for the three-dimensional image; used for game characters, scenery, monsters, and other game objects.

An example PlayStation game that uses TMD files is Jurassic Park: Operation Genesis. Some TMD files can be viewed with MilkShape 3D, but without the coloring.

Programs that open or reference TMD files

Updated: October 20, 2011

MySQL Temporary Database File

Intermediate database file created by MySQL, an open source relational database program; contains information that helps MySQL complete database recoveries or conversion processes; created in the database directory where the .MYI , .MYD , and .FRM files are located.

TMD files can be created when the myisampack MySQL command is run. If the process is terminated before completion, the temporary TMD files might not be deleted. TMD files may also be created by other MySQL database operations.

Programs that open or reference TMD files

Updated: May 5, 2010