Game data archive format used by games developed by Cryo Interactive Entertainment; contains game data, such as objects, maps, sounds, and music in a single archive. Microïds acquired Cryo Interactive in 2008, but several Microïds games still use the CryoBF format. The following games use BF files to store game data: Nostradamus: The Last Prophecy Safecracker: The Ultimate Puzzle Adventure Destination: Treasure Island Return to Mysterious Island Return to Mysterious Island 2: Minas Fate The Secret of the Nautilus Dracula 3: The Path of the Dragon BF files are referenced by the games above and are not meant to be opened manually. However, the contents of a BF file can be extracted using an unpacking program like Unpakke.