Links - Fenixin/Minecraft-Region-Fixer GitHub Wiki Information on how Minecraft stores worlds: https://minecraft.gamepedia.com/Java_Edition_level_format Information on region files: https://minecraft.gamepedia.com/Anvil_file_format https://minecraft.gamepedia.com/Region_file_format There is a wiki article in spigot wiki in how to use Region-Fixer: http://www.spigotmc.org/wiki/using-the-minecraft-region-fixer/