Binding of Isaac: Rebirth Wiki

Hook Worm is a trinket.



  • Removed in Repentance Effective range remains the same because the range buff only compensates for the tears tracing a longer path.
    • Added in Repentance Effective range is a bit lower, by about 1 tile.
  • Removed in Repentance Shooting with this trinket equipped when next to a wall or block may cause the tear to travel into the wall.


  • Azazel Azazel: Azazel gains the wider beam, but no range increase.
  • Brimstone Brimstone: Effect applies to the Brimstone beam, effectively increasing the width of the beam. Removed in Repentance It also adds an extra tick to the beam.
  • The Forgotten The Forgotten: Bone club does not get any wider or attack any further, making the trinket only work on The Soul The Soul.
  • Added in RepentanceRevelation Revelation / Tech.5 Tech.5 / Technology Technology / Technology 2 Technology 2: All the beams are affected, effectively increasing width and hitbox.
  • Tainted Azazel Tainted Azazel: Tainted Azazel gains a wider beam, helping counter his inherent low width Brimstone attack.
  • Tiny Planet Tiny Planet / Added in AfterbirthTech X Tech X: No effect.
  • Added in AfterbirthTractor Beam Tractor Beam: The beam overrides the worm's tear movement effect, but keeps the +10 range.

In-game Footage[]


  • Hookworms are parasitic worms that can enter through the skin from dirt that contains their eggs and larvae.