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Chain Knife
  • Chain Knife item spriteold Chain Knife item sprite
Stack digit 1.png
Damage12 (Melee)
Knockback3.5 (Weak)
Critical chance4%
Use time20 (Very fast)
RarityRarity level: 1
Research1 required
Projectile created
  • Chain Knife
    Chain Knife
Obtained from Obtained from
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Cave BatCave Bat.gifCave Bat10.4%

The Chain Knife attacking a Target Dummy. Note how the Knife immediately returns when hitting a block.

The Chain Knife is a melee weapon that throws a Knife-like projectile attached to a chain, similar to Flails, but the attack button cannot be held to wield it continuously. It only extends a short distance of 12 tiles, though its quick use time and velocity may make it a good early to mid-game weapon. It has a 0.4*1/250 (0.4%) chance of being dropped by a Cave Bat.

Its best modifier is Godly or Demonic. Both modifiers increase the average damage output by the same amount.


  • It is good at killing quick flying monsters. It is also good at killing large groups of Wall Creepers, and keeping the second form of the Brain of Cthulhu at bay.
  • A Bat Statue can be used to easily farm bats to obtain the Chain Knife. Note that drop rates from statue enemies are reduced by a factor of 5.
    • If the player finds a Bat statue underground before beating skeletron, they can put in onto a wire (in between a trap and its pressure plate) and step on the pressure plate to make a crude way of spawning more bats.
  • Although the weapon attacks quite quickly, it is very difficult to stunlock enemies with it due to its low knockback.


  • Unlike most flails, this flail will not spin around the player, but instead attack the target directly before returning to the player.
  • Despite having worse stats overall, it sells for more than the Chain Guillotines on the Console version Console versions.

See also[]


  • Desktop
    • Damage increased from 11 to 12.
    • Item and projectile sprites updated.