Change of Address
From Growtopia
The Change Of Address costs 20,000 gems in the store. The item allows you to trade one of your world's name to another. Both worlds must have a World Lock in them. “Don't like the name of your world? You can use up one of these to trade your world's name with the name of any other world that you own. You must have a small lock both worlds no need to be world lock. Go lock up that empty world with the new name new name you want and swap away!”
