Binding of Isaac: Rebirth Wiki

Added in Afterbirth

Added in Repentance Number Two / Removed in Repentance No. 2 is a passive item added in The Binding of Isaac: Afterbirth.


  • Continuously firing tears for 3 seconds causes Isaac to drop a free Butt Bombs Butt Bombs bomb. Only 1 Butt Bomb can be dropped per charging cycle, so it is required to stop firing and then charge again to drop another Butt Bomb. Taking Damage will interrupt the cycle.
    • More precisely, a bomb is dropped by holding any fire button/direction for 3 seconds, and as such the effect is also triggered by charging or directly controlled attacks.
    • Added in Repentance There is a visual fart effect whenever a Butt Bomb is placed.
  • Added in Repentance This item belongs to the Oh Crap set. Collecting three items from this set will transform Isaac into a walking pile of poop.


  • Essentially grants unlimited bombs, as the charge time can be repeatedly reset to bomb tinted rocks and to get into Secret and Super Secret Rooms.
  • Increases difficulty of poop-themed bosses such as Dingle, as Butt Bombs restore 25% of maximum HP to the bosses when they explode.
  • The spawned butt bombs will be affected by bomb modifiers, excluding Mr. Mega Mr. Mega.


In-game Footage[]


  • Added in Repentance This item's name was changed from No. 2 to Number Two.


PC 1A8Z 43DC (Treasure Room adjacent to spawn)

PC 4X63 T64A (Treasure Room adjacent to spawn)