Thunder Zapper

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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
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 CrateMirage CrateMirage Crate112.5%
Oasis CrateOasis CrateOasis Crate112.5%
Sandstone ChestSandstone ChestSandstone Chest114.29*1/7 (14.29%)

The Thunder Zapper is a Desert-themed magic weapon obtainable in pre-Hardmode. It is found in Sandstone Chests in the Underground Desert or in Oasis Crates obtained from fishing in the Oasis. When cast, it 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).

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 similar single-target DPS to 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.



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