What is a .B file?
A .B file is a type of computer file used by the video game Grand Theft Auto III (GTA3), which is a game where you can drive cars and complete missions. This file saves where you are in the game, so you can stop playing and then start again from the same place later. The .B file is not just used by GTA3, but also by other games in the Grand Theft Auto series like Vice City and San Andreas.
To open a .B file, you need to have one of the Grand Theft Auto games that use it, such as Grand Theft Auto 3, Grand Theft Auto: Vice City, or Grand Theft Auto: San Andreas. These games know how to read the .B file and load your saved game.
When you save your game in GTA3, including in Vice City and San Andreas, the game puts the .B file in a special folder on your computer. Usually, this folder is inside the "My Documents" folder. For example, if you are playing GTA: San Andreas, your saved games are stored in a folder that looks something like this: C:\Documents and Settings\[your username]\My Documents\GTA San Andreas User Files\.
So, a .B file is really just a way for the game to remember where you left off, and you need the specific Grand Theft Auto game to open and use this file.
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