Binding of Isaac: Rebirth Wiki

Added in Afterbirth

Bomber Boy is a passive item added in The Binding of Isaac: Afterbirth.


  • Grants 5 bombs.
  • Causes bombs to explode in a large cross-shaped blast by adding two additional explosions in each cardinal direction.
    • Removed in Repentance The damage for a single explosion is unchanged, but each successive explosion that hits the same enemy has its damage halved. The damage per successive explosion is: 60, 30, 15, 7.5, 3.75, 1.875, 0.9375, 0.46875, 0.234375
    • Added in Repentance The damage for a single explosion is 0.75x times its normal damage, resulting in 75 damage per explosion. Each successive explosion that hits the same enemy has its damage halved. The damage per successive explosion is: 75, 37.5, 18.75, 9.375, 4.6875, 2.34375, 1.171875, 0.5859375, 0.29296875.
    • Mr. Mega Mr. Mega changes the explosions' base damage to Removed in Repentance110/Added in Repentance185, with the same damage reductions as above.


  • With Bomber Boy, Bedrooms, super special rocks and Added in Repentancethe Mines can be accessed with a single bomb.
  • Bombing the Donation Machine will cause a greater than normal amount of coins to drop from the Donation Machine.
    • The total amount of dropped coins is still deducted from the Donation Machine, however.
  • Removed in Afterbirth † Bombing a Blue or Purple Fire Place may cause it to drop multiple Soul Hearts.
  • Added in Repentance Bombs are colored blue and no longer have a skull on them.


  • Added in RepentanceBob's Brain Bob's Brain: Bomber Boy affects the explosion from Bob's Brain.
  • Dr. Fetus Dr. Fetus: Bomber Boy affects the bombs fired by Dr. Fetus.
  • Added in RepentanceEpic Fetus Epic Fetus: Bomber Boy affects the missiles' explosions from Epic Fetus, with the explosions' multiplier resulting in 15 times Isaac's damage per explosion. Unlike with regular bombs, Bomber Boy won't decrease the damage from each of the missile's successive explosions, drastically increasing damage.
  • Mr. Mega Mr. Mega: All explosions deal more damage, have a larger radius and will overlap each other more, potentially vastly increasing damage. Caution should be exercised, as the explosions' increased radius make self-damage likely.
  • Removed in RepentanceSad Bombs Sad Bombs: Each explosion releases 10 tears in all directions.


In-game Footage[]


  • Bomber Boy is a reference to the 1983 video-game Bomberman. Bomber Boy is, specifically, the original name of a Game Boy game known as Atomic Punk in the United States and Dynablaster in Europe and Oceania.
    • As of Repentance, the bomb's appearance when using this item also references how bombs look in Bomberman.
  • Before Repentance, the item's quote was "Explosive blast!".


PC YZLQ WLAV (Treasure Room adjacent to spawn on Normal, just to the left of spawn on Hard)


Bug Bug! Removed in Afterbirth † Due to the extreme force of multiple simultaneous explosions, it is possible for Bomber Boy bombs (especially when combined with Mr. Mega) to propel Isaac into obstacles or over pits.