By default, all software supports multiple file extensions. Fallout: New Vegas supports at least 1 different file extensions. The basic files that Fallout: New Vegas supports are .BSA. However, not all of the extensions listed on the list are always used to save the effects of work in Fallout: New Vegas. Very often, files with such extensions are used as source data files used by Fallout: New Vegas.
Fallout: New Vegas can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via Fallout: New Vegas and try to save it in another file format, also supported by Fallout: New Vegas.