Game does not offer the required resolution in settings – Issue Fix
Open vars.ini file and edit line starting with v_resolution to your required resolution in the form
Nebuchadnezzar supports any resolution higher than 1366×768 (including).
vars.ini file location:
A) Windows: Documents\NeposGames\Nebuchadnezzar\vars.ini
B) Linux: home/.local/share/NeposGames/Nebuchadnezzar/vars.ini