Please locate Shadow Complex Remastered in the Steam Library. Right click (Ctrl + Click) and selelect PROPERTIES.
Within the Properties, select the LOCAL FILES tab and then BROWSE FILES to navigate to the Shadow Complex Remastered installation folder.
Right-click (Ctrl + Click) Shadow Complex Remastered and select Show Package Contents.
Navigate to Contents> Resources> EmpireGame> Config folders to find the DefaultSystemSettings.ini .
- Right-click (Ctrl + Click) the DefaultSystemSettings.ini file and open with Xcode to change the resolution settings inside of the .ini file.