Thunder Zapper

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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
Thunder Zapper
  • Thunder Zapper item sprite
Stack digit 1.png
Damage20 (Magic)
Knockback3 (Very weak)
Critical chance4%
Use time17 (Very fast)
Velocity16 (effective)
RarityRarity level: 1
Sell30 SC
Research1 required
Projectile created
  • Thunder Zapper
    Thunder Zapper
Obtained from Obtained from
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Mirage Crate(Desktop, Console and Mobile versions)Mirage CrateMirage Crate(Desktop, Console and Mobile versions)112.5%
Oasis Crate(Desktop, Console and Mobile versions)Oasis CrateOasis Crate(Desktop, Console and Mobile versions)112.5%
Sandstone Chest(Desktop, Console and Mobile versions)Sandstone ChestSandstone Chest(Desktop, Console and Mobile versions)11/3 (33.33%)

The Thunder Zapper is a pre-Hardmode magic weapon that launches a fast-moving, non-piercing projectile that is unaffected by gravity and will disappear with a visual explosion that does no damage after traveling for about one second or when hitting a solid block. The projectile moves up and down in a randomized zig-zag pattern horizontally, but not vertically (traveling straight when shooting directly up or down). The Thunder Zapper has a 1/3 (33.33%) chance of being found in Sandstone Chests in the lower 3/7ths of the Underground Desert and a 1/8 (12.5%) chance of being found in Oasis Crates and Mirage Crates obtained from fishing in the Oasis.

Its best modifier is Mythical.


  • Due to the medium mana cost and the very fast speed at which it auto-casts, it can be seen as an alternative to the gem staves, doing higher single-target DPS than the highest-tier staves. However, it lacks piercing against multiple targets, and requires visiting a dangerous biome. It can more safely be obtained from fishing in an Oasis.
  • The zig-zag motion of the projectile facilitates some unusual trajectories, e.g. through a half-tile gap.
  • In Don't dig up worlds, the Thunder Zapper can be obtained from the lower chests that spawn below the underground desert walls with much less risk.
  • If a Sandstone Chest contains a Storm Spear or Bast Statue as its primary item, the player is low enough to obtain the Thunder Zapper. Otherwise, they need to dig lower before they have a chance of finding one.



  • Desktop 1.4.4:
    • Damage increased from 12 to 20.
    • Mana cost increased from 5 to 7.
    • Knockback increased from 2 to 3.