.FF File Extension
File TypeCall of Duty 4 Fast File
What is an FF file?
Game data file used by Call of Duty (CoD) first-person shooter games, including Call of Duty 4: Modern Warfare and Call of Duty: Black Ops; saves various game data that are loaded during gameplay.
NOTE: FF files use a proprietary format and are not intended to be modified by players. Changing the contents of an FF file may cause the game to stop running.