ItemSprites.png Signal Jammer

When activated (punch to activate), this prevents your world from being listed on the World Select screen.
This item has special properties you can adjust with the Wrench.
This item can't be destroyed - smashing it will return it to your backpack if you have room!
TypeItemSprites.png Toggleable Animated Block - Foreground
ChiItemSprites.png Wind
Texture TypeTextureTypeSprite.png Single
Collision TypeCollisionTypeSprite.png Full Collision
HardnessItemSprites.png 30 Hits
ItemSprites.png 23 Hits
Restores after 4s of inactivity.
Seed ColorSeedSprites.png
Grow TimeTreeSprites.png 1h 0m 0s
Default Gems DropItemSprites.png N/A
Paint Preview
ItemSprites.pngItemSprites.png Red
ItemSprites.pngItemSprites.png Yellow
ItemSprites.pngItemSprites.png Green
ItemSprites.pngItemSprites.png Aqua
ItemSprites.pngItemSprites.png Blue
ItemSprites.pngItemSprites.png Purple
ItemSprites.pngItemSprites.png Charcoal
ItemSprites.png Growtopia Store
Purchase the Signal Jammer for 2,000 ItemSprites.png in the Growtopia Store.
"Get off the grid! Install a Signal Jammer! A single punch will cause it to whir to life, tireless hiding your world and its population from pesky snoopers - only those who know the world name will be able to enter. It's a perma-Item, it's never lost when destroyed."

The Signal Jammer is an unsplicable solid jammer foreground block.


When toggled on (via punching), a Signal Jammer will change its appearance and hide the name of the world it is placed in from broadcasts, private messages, and the world selection menu, causing it to appear as "JAMMED!" (in the case of the selection menu, preventing it from appearing entirely).


  • Having an enabled Signal Jammer in a world doesn't prevent others from entering the world by typing its name directly.
  • The Signal Jammer does not hide the world's name on the friend list.
    • It does not hide the name on friendcasts either.


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