Dungeon Defenders II: How to Add Ultrawide / 21:9

Method 1

• Open Steam
• Go to your Steam Library
• Right click “Dungeon Defenders 2”
• Hover over “Manage >”
• Click “Browse local files”

The “Dungeon Defenders 2” folder should now be open

Method 2

• Open Steam
• Go to your Steam Library
• Right click “Dungeon Defenders 2”
• Click “Properties”
• Click “Local Files” on the sidebar of the popup
• Click “Browse…”

The “Dungeon Defenders 2” folder should now be open

Method 3
Navigate to it via File Explorer, I’m not explaining that.

Inside your “Dungeon Defenders 2” folder

• Open the “DunDef2” folder
• Open the “UDKGame” folder
• Open the “Config” folder
• Open “DefaultDunDef.ini” with Notepad or other Text Editor
• Inside of the “DefaultDunDef.ini” file, scroll down to the “[UDKGame.DunDefViewportClient]” section
• Under that section there will be 15 ish “SupportedResolutions[_]=”___x___””
• Pick one and replace the resulution in quotes with your desired reslution

For example I replaced: SupportedResolutions[15]=”3840×2160″ with SupportedResolutions[15]=”3840×1600″ because thats my mononiter’s reslution.

If you did it correctly when you launch the game and open the options menu the drop-down selector should now list whatever resolution you added