Diablo II: Resurrected

The game is limited to 19:9. The following solution for 32:9 comes from mana2000's guide:

1. As a precaution, you may want to make a separate copy of D2R.exe using any different filename and edit that copy instead of the original file. For example, you could rename the copy to _D2R.exe, but that is only an example. The copied file does not need to be named _D2R.exe specifically. Any different filename is fine, as long as it is a separate copy of the original executable. This is only a safety measure to reduce the chance of affecting your default setup or original executable. If you prefer, you may edit the original file directly at your own discretion.
2. Open the file you want to edit in your preferred hex editor (e.g. HxD).
3. Search for create_vignette and remove it or replace the corresponding bytes with 00. Example: 63 72 65 61 74 65 5F 76 69 67 6E 65 74 74 65 5F 70 → 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
4. Search for 85 EB 01 40 92 0A 06 40 72 1C 07 40 00 00 00 00 and change to 85 EB 01 40 92 0A 06 40 72 1C 70 40 00 00 00 00
5. Save the file and and launch the game in Offline Mode using the edited executable.