File: Firefight.zip - ...

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

When you unzip a file intended for this game, you will typically find: File: Firefight.zip ...

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