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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
  • Geyser item sprite
  • Geyser placed
Stack digit 9.pngStack digit 9.pngStack digit 9.pngStack digit 9.png
Placeable✔️ (2 wide × 1 high)
Use time15 (Very fast)
RarityRarity level: 0
Sell20 SC
Research5 required
Projectile created
  • Geyser
A Geyser trap in action.

The Geyser is a trap that spews a vertical stream of fire which deals a base damage of 40 / 80 / 120 and a knockback of 2 (Very weak)[1]. It will activate when a player touches it or when it is triggered via wire. Geysers are found naturally-placed in random areas that are deep enough to generate lava, including the Underworld and deeper Cavern areas. They are generated without Pressure Plates or wires attached to them.

Geysers consume no ammunition, and their output is limited only by a cooldown period of 3.33 seconds[1]. Geyser streams extend approximately 20 tiles up or down, depending on placement.

Geysers can be placed on the top or bottom of blocks, facing upward or downward respectively, but not sideways.


  • Geysers are highlighted by the Dangersense buff.
  • If a Geyser is blocked by less than 29 other solid blocks, of at least 4 vertical blocks and 2 horizontal blocks, including liquids, it will pass through them signaled by puffs of smoke moving through the blocks, beginning the wall of fire at the first opening. The smoke will still inflict damage on players if touched.
    • However, this can only happen when the geyser and the solid blocks have less than 4 blocks of space between them to pass through the blocks.
  • Activated Geysers will not free any placed objects, including Torches.



  1. 1.0 1.1 Information taken from the Desktop version Desktop source code, method GeyserTrap() in Terraria.Wiring.cs. There may be inaccuracies, as the current Desktop version Desktop version is