: If the mouse movement feels hyper-sensitive, you may need a 32-bit dinput8.dll file placed in the System folder.

: Name it DNF2001 at the root of your drive (e.g., C:\DNF2001 ) to avoid permission issues.

: Navigate to October26/System in your game folder and paste the files, choosing Replace when prompted.

: Copy everything from Patches/Megapatch/System .

: Locate the Patches folder inside your extracted directory.

: Right-click DukeForever.exe in October26/System , select Properties , and set Compatibility Mode to Windows XP (Service Pack 3) .