Jammers

There are more than one subjects in the Growtopia Wiki using this name.

Jammers are machine blocks which help world owners to block several things they don't want.

There are 3 main kinds of them:

Items	What it does
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Signal Jammer	Prevents the world from showing up in the world menu, and changes the world name in broadcasts into JAMMED!.
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Punch Jammer	Prevents visitors from pushing and pulling each other by punching around.
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Zombie Jammer	Prevents infected visitors from infecting others in the world.
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Balloon Jammer	Prevents players from throwing War Balloons in the world.

There are also several other items which act like a jammer, but don't have the looks of one:

Items	What it does
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Ghost Charm	Prevents ghosts from spawning in the world.
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Guardian Pineapple	Prevents consumables to be used in the world; was added to prevent people from exploding pineapple growtopians in the world.
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Firehouse	Prevents fires from spreading by instantly putting them out
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Mini-Mod	Prevents people from dropping items in the world.
https://growtopiawiki.nbg1.your-objectstorage.com/uploads/8/8f/ItemSprites.png Xenonite Crystal	Blocking/granting Mods that the player wants