960times10_5is106044 wrote:

I remembered when I search the forum, actually, SB3 stands for Scratch Binary 3.0.
See:
Scratch
Binary
3.0
SB2 stands for Scratch Binary 2.0
SB stands for Scratch Binary (how can Scratch find a suitable place for file formats?? Two letters??)

This is the correct one, it indeed stands for Scratch Binary, since if you think about it the project file doesn't just include blocks, it also includes assets and the manifest file.

It's the file for Scratch 3.0 projects
and also the file for sprites and stuff I believe via exporting unless I forgot.