What is a .BNS File And How To Open It – Valve

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Have you came across a file with the .bns extension, but it is a file you have never seen before? Perhaps you know what the file is, but you simply don’t know how to open it. Thanks to this easy guide you will be able to find out what .bns file extension is, how to open it and how to work with it.

What is a .BNS file?

The .BNS file extension is from Portal Bonus Map Script. The development of this file was done by Valve. The format of this game related file is text.

What to know

There is currently 0 software that can open the .bns file on 0 platforms.


There are currently no software associated with this file extension, if you have any information please let us know.