Fallout and Fallout 2 file formats

Fallout and Fallout 2 both incorporate a few native file formats to store data in different ways.

Animation / Artwork

 * FRM file - Frame Graphics file, used for the game-world artwork
 * RIX file - ColoRIX image file, used as splash screen while loading the game

Audio / Video

 * ACM file - Interplay compressed audio file
 * MVE file - Interplay compressed video file

Script

 * INT file - Script used by various characters and objects found in the game world

Text

 * BIO file - Pre-made character biographies
 * GAM file - Holds all of the global variables and global map variables  in the game
 * MSG file - Dialogue / message file used for characters, locations, and all other text found in-game
 * SVE file - Holds movie subtitle data