FileMagic is a versatile file management tool designed to handle a wide variety of file formats, including the highly compressed and lesser-known KGB files. KGB files are archive files created with KGB Archiver, a compression utility known for its extreme compression ratios. https://www.filemagic.com/en/compressed-files/kgb-file-extension/how-to-open-a-file-with-the-kgb-file-extension/