The Chain Knife is the weakest flail weapon in the game. It is rare drop from Cave Bats. It deals 11 melee damage with a fast attack rate and very weak knockback. It appears to be a spearhead on a chain. Although being a flail, it acts very much like a boomerang, as it is not affected by gravity and moves straight out, then returns back to the player.

Chain Knife - Terraria 1

Chain Knife - Terraria 1.2 Guide New Melee Weapon!


  • This is likely a reference to Scorpion's main weapon of choice from the Mortal Kombat franchise.
  • This weapon is very similar to the Chain Guillotines, which has two blades, rather than one.


  • It is one of the few flails that can not be thrown through Doors.
  • The Chain Knife used to drop from Chaos Elementals due to a typo in the code, it was instead supposed to drop the Rod of Discord (Fixed as of
  • Just like the Depth Meter, the Chain knife also drops from cave bats spawned by Bat Statues.

Update Info


  • Now drops from Cave Bats instead of Chaos Elementals.


  • Added to the game.


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