ATM File

What are ATM files and how to open them

Are you having problems opening an ATM file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your ATM files.

What is an ATM file?

ATM files have multiple uses, and TerraGen Light and Atmosphere is one of them. Read more about the other uses further down the page.

TerraGen Light and Atmosphere

These ATM files contain the CG environments created in Terragen, a software developed to create and render realistic environments. You use Terragen to create whole planets with natural and beautiful views, control the weather and the light, and add houses and plants to build your ideal world. Terragen has Photo-reak Clouds, Ozone Simulation, Ray-traced Preview, New Shaders and Enhancement, and more.

How to open ATM files

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

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

Last updated: August 22, 2026

All known file formats using extension .ATM

While TerraGen Light and Atmosphere is a popular type of ATM-file, we know of 2 different uses of the .ATM file extension. Different software may use files with the same extension for different types of data.

Vue D'Esprit 4 Atmosphere Preset

Vue D'Esprit 4 Atmosphere Preset files define environmental settings for sky, weather, light and clouds used within Vue D'Esprit 4 scenes. They allow artists using Vue D'Esprit 4 to select or load complete atmospheric conditions - with parameters like cloud layers, sun positions, sky color, and visibility - that control how the sky and weather look in renders and animations.

These preset files are created and consumed by the Vue D'Esprit 4 application from E-on Software. Inside Vue, an artist picks an atmosphere preset to quickly apply realistic or stylized skies and skies-and-weather settings. Presets can be modified in an Atmosphere Editor before rendering, and saved back as Atmosphere Preset files so they can be reused or shared.

Technical identifiers include a signature string "ESPRIT" somewhere in the file data, the phrase "VUE D", and a byte-pattern "0x00 at offset 12" that helps distinguish this format.

Various apps that use files with this extension

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

Help us help others

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