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.BSA File Extension

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File TypeBethesda Softworks Archive

DeveloperBethesda Softworks
4.2 (17 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryGame Files


This file is saved in a binary format, which requires a specific program to read its contents.


Compressed game data archive used by Bethesda Softworks video games; contains 3d models, textures, sounds, and other data referenced by each game.

More Information

BSA files are not meant to be altered, but they can be "modded" in order to change the gameplay. Various programs exist to unpack and alter BSA files.

Programs that open BSA files
BSA Commander
BSA Browser
Fallout mod manager
Updated 7/1/2014

FileInfo - The File Extensions Database

This page contains information about the .BSA extension and its known file associations. Our goal is to help you understand what a BSA file is and how to open it.

The Bethesda Softworks Archive file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

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