Binding of Isaac: Rebirth Wiki

Added in Repentance

Brimstone Bombs is an unlockable passive item added in The Binding of Isaac: Repentance.


  • Gives Isaac +5 bombs.
  • Upon exploding, Isaac's bombs fire 4 Brimstone Brimstone lasers in the cardinal directions.
    • Each laser deals 8 damage per tick, and can hit up to 19 times.
    • Multiple lasers cannot hit the same enemy simultaneously.


  • The lasers created by Brimstone Bombs can push other bombs, including Troll Bombs and bombs placed by Isaac.


  • BBF BBF / Bob's Brain Bob's Brain: Inherits the effect in full, firing lasers every time they explode.
  • Dr. Fetus Dr. Fetus / Epic Fetus Epic Fetus: Attacks have a small chance to trigger this effect. Chance goes up to 100% at 30 luck.
  • Guppy Guppy / The Mulligan The Mulligan: The lasers can create Blue Flies when they deal damage.
  • Kamikaze! Kamikaze!: Activating Kamikaze! sends brimstone lasers in all 4 directions.
  • Locust of War Locust of War / Scatter Bombs Scatter Bombs: Explosions create thinner lasers that deal 4.8 damage per tick instead of 8.
  • Multidimensional Baby Multidimensional Baby: Placing Multidimensional Baby in front of the beam will transform it into two black-and-white beams.


  • Bomber Boy Bomber Boy: Only the center explosion will fire lasers.
  • Anarchist Cookbook Anarchist Cookbook: The lasers fired by the troll bombs will push other troll bombs around, likely to the edges of the room.

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