The B file extension is used for BASIC source file format. B files contain BASIC source code written in BASIC syntax. In BASIC language source code, B files are also used by different IDEs. B files can be edited with any text editors.
The B file extension is associated with the Grand Theft Auto III (GTA3), an automotive-based action game The B file stores saved player's progress in the game.
The B file extension is used for BuRg3r source file format. Burg3r is a custom programming language used for creating games. B file stores definition data. B files can be edited with any text editors.