Jammers

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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 kinds of them:

1. Signal Jammer Prevents the world from showing up in the world menu, and changes the world name in broadcasts into JAMMED!.

2. Punch Jammer Prevents visitors from pushing and pulling each other by punching around.

3. Zombie Jammer Prevents infected visitors from infecting others in the world.

4. 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:

1. Ghost Charm Prevents ghosts from spawning in the world.

2. Guardian Pineapple Prevents consumables to be used in the world; was added to prevent people from exploding pineapple growtopians in the world.

3. Firehouse  Prevents fires from spreading by instantly putting them out