Modathon

Fallout 3 BSA Decompressor Mod

Link copied to clipboard
Fallout 3 BSA Decompressor mod for Fallout 3
Latest13 Feb 2026
Uploaded01 Feb 2026
Version1.0
311 B
Total Files Sizes
0
Unique DLs
0
Total DLs
1
Total Files

Fallout 3 BSA Decompressor

File Size311 B
Game Image for Fallout 3

A simple .bat script that decompresses the BSA and repacks them without compression.

The benefits are: Faster Performance.



Installation:

  1. Download BSARCH and place the executable in Fallout 3\Data
  2. Download FO3 BSA Decompressor and place the bat file in Fallout 3\Data
  3. Run Decompressor.bat and wait.....
  4. When done, you can delete: "Unpack" folder, BSARCH.exe and decompressor.bat



Before and after decompression:

Fallout - Meshes: 713mb to 1.66gb

Fallout - Textures: 1.04gb to 1.71gb


Every other BSA has no benefit of decompression, as they already are “decompressed”.


Uninstallation:


Verify your games files integrity

Instructions


Permissions and credits

No permissions have been set

Fallout 3 BSA Decompressor

Type: Main
Date uploaded01 Feb 2026
File Size311 B
Unique DLs0
Total DLs0
Version1.0

Fallout 3 BSA Decompressor