A def file extension is related to the id Tech 6 video gaming engine. A def file contains video card settings.

There are 5 other file types using
the DEF file extension!

empty icon.def - Definition data

empty icon.def - Data Entry/Review Module file

empty icon.def - NovaLogic game weapon profile

empty icon.def - ESwin wizard file

empty icon.def - IOBit Malware Fighter definitions

Bookmark & share this page with others:

DEF file extension - id Tech 6 video settings

What is def file? How to open def files?

File type specification:

Game file type icon Game file type

The def file extension is associated with the id Tech 6 a video gaming engine, developed by id Software for Doom (Doom 4, Doom 2016) video game.

The def file contains video card (graphic card) settings. These files are included in *.resources game archive.

The default software associated to open def file:

Doom (Doom 4) icon

id Software LLC logoDoom (Doom 4)  Multiplatform software

Company or developer:
id Software LLC

DOOM returns as a brutally fun and challenging modern-day shooter experience. Relentless demons, impossibly destructive guns, and fast, fluid movement provide the foundation for intense, first-person combat – whether you’re obliterating demon hordes through the depths of Hell in the single-player campaign, or competing against your friends in numerous multiplayer modes.

Help how to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.

List of recommended software applications associated to the .def file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open def file, edit def file, convert def file, view def file, play def file etc. (if exist software for corresponding action in File-Extensions.org's database).

Settings file type for software that use def file - id Tech 6 video settings

Programs supporting the exension def on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Doom (Doom 4) for settings def file action.


Previous file extension
DEF file extension

File-Extensions.org > Game file types

Next file extension
file extension DEH


Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed