What you need to do: Change the Aspect Ratio and Resolution
16:10 - Hex Edit the TheThing.exe -> look for AB AA AA 3F and change it to CD CC CC 3F
Resolution - via Regedit -> [HKEY_CURRENT_USER\SOFTWARE\Computer Artworks\The Thing\1.0] look for "DisplayModeWidth" and "DisplayModeHeight" and put your des. Res. in
16:9 - Hex Edit the TheThing.exe -> look for AB AA AA 3F and change it to 39 8E E3 3F
Resolution - via Regedit -> [HKEY_CURRENT_USER\SOFTWARE\Computer Artworks\The Thing\1.0] look for "DisplayModeWidth" and "DisplayModeHeight" and put your des. Res. in
New solutions:
You can also download The Thing - Sui's wrapper from attachment to get widescreen. Extract the file from attachment to the game folder. Computer Atworks - The Thing - bin. Open d3d8 ini in the text editor for example notepad ++ and find these lines and set your resolution, for example:
Width = 2560
Height = 1440
You can also try set higher FOV (Default FOV is 60). I set FOV 90 but I didn't notice any changes.
About This File
Wrapper is only for 1.2 version of The Thing, that simplifies widescreen fixes, allows to run the game in windowed mode and configure FOV. files available from the PC Gaming Wiki Community Files (search there).