.BNS File Extension

Portal Bonus Map Script

Developer Valve
4.5  |  16 Votes
Category Game Files
Format Text

What is a BNS file?

Game file used by Portal, a first-person puzzle solving game; stores a plain text script that defines information about a Portal map (.BSP file); includes the map name, thumbnail image file references, comments about the map, and a list of challenges to complete.

More Information

BNS files are included as part of a .BMZ bonus map zip file, which can be installed to add bonus maps to Portal.

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open or reference BNS files

Updated May 17, 2012

Verified by FileInfo.com

The FileInfo.com team has independently researched the Portal Bonus Map Script file format and Mac and Windows apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

If you would like to suggest any additions or updates to this page, please let us know.