Open B File
Files with the B file extension are associated with several file formats and therefore with some different uses:
Grand Theft Auto 3
File B extension, in this particular case, was created by Grand Theft Auto 3 to save the game, and then resume it from the same point.
Grand Theft Auto is a well known and popular game series created by Rockstar. It has had a large number of sequels over the years.
BASIC code
In this case, the B files are development files that store source code written in a specific programming language.
B files contain markup usually written in the well-known BASIC language.
The files are usually stored as plain text and can actually be opened with any text editor.
However, the recommendation is to open it with a text editor where the labels can be highlighted, for a better development experience.
To open a B file you must have one of the following programs installed