MDL File Type

- The quick facts

What are MDL files and how to open them

Are you having problems opening a MDL file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a MDL file?

MDL files have multiple uses, and Half-Life 3D Model is one of them.

Half-Life 3D Model

Half-Life is a series of first-person shooter games developed by Valve. The MDL files used by these games contain 3D models, including meshes, objects, and textures. MDL files are often used to create buildings and objects within gaming applications. Popular applications that use the .mdl file extension include Warcraft III, Half-Life, and Quake.

How to open MDL files

Important: Different programs may use files with the MDL file extension for different purposes, so unless you are sure which format your MDL file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different MDL openers which you will find listed below.

Last updated: June 29, 2022

All known file formats using extension .MDL

While Half-Life 3D Model is a popular type of MDL-file, we know of 11 different uses of the .MDL extension. Different software may use files with the same extension for different types of data.

MoRay 3D Model

We know that one MDL format is MoRay 3D Model. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

MDL opener for Windows

We have identified one MDL opener that is compatible with this specific type of MDL file.


More file formats using the MDL extension

Through our research of MDL files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • 3-D Helicopter Simulator Model
  • CA-Compete! Model
  • CAB Module
  • Digitrakker Music Module
  • Javelin Model
  • Luigi's Mansion 3D Model
  • Microsoft Flight Simulator 3D Model
  • Mighty Draw DOS Library
  • Simulink Library

Various apps that use files with this extension

These apps are known to open certain types of MDL files. Remember, different programs may use MDL files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Native Instruments Reaktor5Native Instruments Reaktor5User submitted
MATLABMATLABUser submitted
jetAudiojetAudioUser submitted
Altium DesignerAltium DesignerUser submitted
Jed's Half-Life Model ViewerJed's Half-Life Model ViewerUser submitted
OpenMPT / ModPlug TrackerOpenMPT / ModPlug TrackerUser submitted
Altium Designer SummerAltium Designer SummerUser submitted
PowerPlay TransformerPowerPlay TransformerUser submitted
GamestudioGamestudioUser submitted
Ashampoo Media PlayerAshampoo Media PlayerUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about MDL file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.