Signal Jammer
From Growtopia
The signal jammer is an item that can be purchased at the store for 4,000 gems or traded. It is not available through seed splicing.
The signal jammer jams the name of your world when you broadcast something, coming up with JAMMED! where it should say the name of your world. The jammer also makes your world not come up on the select world screen, no matter how many people are currently in it.
It is reccomended you put a lock near your jammer as they may be stolen otherwise.
