To make Diablo II widescreen, you can follow these simple steps

1.)Open D2VidTst.exe  open D2VidTst.exe

2.) Run the video test.

2-run-test.png

3.) Select 3dfx Glide, and click OK

3-choose-3dfxglide.png

4.) Open glide-init.exe 4-open-glide-init-exe.png

5.) Choose English

5-select-english.png

6.)Choose settings

6-choose-settings.png

7.)Uncheck keep aspect ratio

7-uncheck-keep-aspect-ratio.png

8.)Check desktopresolution

8-select-desktop-resolution.png

9.) Select Quit

9-quit-glide3.png

10.) Change resolution in-game

press esc >options > video options > resolution

1-ingame-press-escape.png

2-select-video options.png

3-change-resolution.png