BioWare Infinity Engine game data
File type: Game file
A .bah file contains BioWare Infinity Engine game data and is associated with Baldur's Gate.
File type category:
Game file
Date updated: November 11, 2026
BioWare's Infinity Engine was used to create role-playing games such as Baldur's Gate. The game was released for Microsoft Windows and Mac OS.
A BAH file contains game data used by the engine as part of a game's resources. It is a legacy game-resource format, intended for use within a compatible game rather than as a general-purpose file for editing or exchange.
Use Baldur's Gate for Windows to load the game data. A BAH file is not intended to be opened directly; leave it in its original game installation so the game can access it.
A BAH file contains game data, which is not normally converted into a general-purpose file format. It is best to keep it with the game and access its data through a compatible Infinity Engine game.
Software applications that handle other tasks involving bah files:
Microsoft Windows