The Binding of Isaac Wiki

The Parasite

The Parasite


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Isaac's tears split in two when they hit something.


"Split Shot"


  • Tears that deal more than 1.0 damage split into two tears with half damage and half remaining range on impact with obstacles or enemies.
    • Damage less than 1.0 causes the tears to simply disappear.
    • The splitting can keep up as long as the tears have range remaining and the damage of the split tears stays above 0.5.
    • Split tears are scaled down by 0.5x from the parent one, ignoring damage based size reduction.


  • - All tears split by the prism will burst into split tears when hitting obstacles.
  • - Two further explosions appear perpendicular to the head's direction of travel when it blows up.
  • - Both tear split effects happen simultaneously.
  • - When tears pass through solid objects, like rocks, they will split, resulting in many tears shooting out from every rock the original tear passed through.
  • - Two groups of this item's four tears, creating eight additional miniature tears on every point of impact instead.
  • - Bombs split into two bombs upon detonation.
  • - Every time tears bounce, burst tears spawn.
  • - Fed tears split into 12 tears. When tears are minimally fed and hit an obstacle, they will split into 5 Lachryphagy burst tears and Parasite burst tears.
  • - All tears in tear barrage will burst into split tears when hitting obstacles or enemies.
  • - All tears in tear barrage will burst into split tears when hitting obstacles or enemies.
  • - Repeatedly spawns miniature tears when on top of an enemy, greatly increasing damage.
  • - The split tears will continue to orbit Isaac, increasing damage potential.
  • - The split tears will be forced directly forward, impacting whatever caused the first tear to split. This increases damage immensely.
    If all shots connect, total damage will be multiplied by (2 + n), where n is the exponent in the highest power of 2 that is equal to or less than your damage. For example, at 12 damage, the greatest power of 2 lower than your damage is 8. 8 is 2³, so total damage will be multiplied by 2 + 3, or 5.
  • - When beams hit obstacles, the beam will split; the split beams can split again when hitting other obstacles.
  • - 2 beams will be fired perpendicular to the main beam at the closest point of intersection with an enemy or obstacle.

Found in

  • Treasure Room
  • Treasure Room (Greed Mode)


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