BNS File

A file with the .BNS extension is a file known as Portal script. It belongs to the Game Files category. This format is associated with Valve.

The reliable way to open a .BNS file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.

This page lists 4 programs that open .BNS files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.