If it's a server backup, it may also include plugins, configuration files, and logs. How to Use and Restore the File
This archive typically holds all essential data required to restore a specific state of your game: Minceaftbackup.7z
The world should now appear in your single-player menu. Why use .7z for Minecraft? How to BACKUP your Minecraft World! 1.21.4 (Java Edition) If it's a server backup, it may also