Baseline (Widescreen) Solution & Issues
Only 4:3 and 5:3 resolutions are listed. Download and copy to the game folder ThirteenAG fix (link is below), or from the attachment. The current desktop resolution will be used. Different resolution can be set in PsiOpsTheMindgateConspiracy.WidescreenFix.ini (the game's own resolution settings will still show 1024x768 or similar).
FMV cutscenes are broken. Everything else works correctly. The HUD is centred for 4:3. Letterboxing for real-time cutscenes ends at the original 4:3 limits. Fullscreen effects use the entire screen as intended (see additional screenshots).
Download ThirteenAG widescreen fix:
https://github.com/ThirteenAG/WidescreenFixesPack/releases/tag/psiops
FOV edit:
Download and copy to the game folder ThirteenAG widescreen fix. In the scripts folder open e.g. in notepad ++ PsiOpsTheMindgateConspiracy.WidescreenFix.ini and in line FOVFactor set up the appropriate FOV. For 16:9 resolutions I reccomend set FOVFactor = 1.5
You can also change FOV in hex editor.
Topic in wsgf forum:
http://www.wsgf.org/forums/viewtopic.php?f=64&t=32936
To see the new FOV, watch new screenshots for 16:9, 16:10 and 4:3
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Same as widescreen. HUD is centred for 4:3.
Eyefinity / Surround Specific Solution & Issues
Same as widescreen. The HUD remains in a centred 4:3 position. Some text is positioned outside the 4:3 area (e.g. loading messages) while menus and tutorial prompts remain within this area.
4k UHD Specific Solution & Issues
To get 4K Ultra HD download and copy to the game folder ThirteenAG's hack and set this resolution in text file ThirteenAG widescreen fix.