DOOM Eternal Official Mod Support Details

Official idStudio Guides: https://idstudio.idsoftware.com/

New Tools for Modding

The Doom Eternal Launcher is available on Steam

• Access by playing DOOM Eternal on Steam. If the Mod Portal does not open, verify file integrity on Steam then try again.
• This is a browser and publishing tool for mods. Be sure to define where you want your Mods to be located in the Settings.
• Multiplayer and achievements are disabled.

idStudio is available on Steam

• Download here: https://store.steampowered.com/app/2545650/DOOM_Eternal_idStudio/
• This is the environment modders will use to create and test their mods.
  

What we CAN do with idStudio

• Modify or create new decls
• Modify or create new textures
• Modify or create new static or animated models
• Modify or create new animations
• Modify or create new strings
• Modify or create new sound effects & music
  
• Modify vanilla map geo, nav, entities, etc (need asset packs)
  
• Build your own maps with new geo, nav, entities, etc

What we CANNOT do with idStudio

• Modify DLC maps, but the assets packs are available
• Play multiplayer mods

Some Drawbacks with idStudio

• idStudio itself is ~60 GBytes
• Individual map asset packs are 5-10 GBytes
• You will need to login to your Bethesda account to access/publish mods
  
• You need a fairly powerful PC to optimally run idStudio (32 GBytes of RAM is recommended)
• idStudio may take a some time to do the following
   - Boot up
   - Open a map
   - Load into a map
   - Package a .map file (packaging decls, strings, textures, & audio will only take a few seconds)
• Packaged map files can range from 500 MByes to 2 GBytes in size depending on how large the maps are