A folder (often named mod or the map's 4-letter code) containing subdirectories like Data , Images , or Sound that mirror the main game's directory structure.
If the zip is a custom map, it requires a CustomMapCodeNames.txt file in the destination folder to list the map's unique code so it appears in the game menu. Installation and Technical Handling File: Firefight.zip ...
Note that progress is generally not stored in these zip files; on Windows, for instance, save data is frequently kept in the Windows Registry under HKEY_CURRENT_USER\Software\'chaos works'\Fire Fight . Firefight Mods - Windows Games by Sean O'Connor A folder (often named mod or the map's