While there isn't a specific official file named "Breeding Village.rar," the concept usually refers to a custom-built structure or a downloaded "world" or "schematic" file that automates the process of breeding NPCs (villagers).
For a truly "set it and forget it" feature, players often build :
: Many tutorial creators on YouTube provide links to their world files in the video description. These are often compressed into .rar or .zip files.
: If you use mods like Litematica , you can download a .litematic or schematic file to "paste" a perfect breeder design into your world.
If you saw a mention of a .rar file, it is likely a or a Schematic shared by a content creator.
: Villagers need "willingness" to breed. You can trigger this by giving them: 12 Carrots 12 Potatoes 12 Beetroots.