Binding of Isaac: Rebirth Wiki
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Boom Flies fly across the room diagonally in straight diagonal lines, dealing contact damage. Explodes upon death.

Notes[]

  • Added in Repentance While Skatole Skatole is held, the Boom Fly and all of its variants will fly significantly slower and will not deal contact damage, but their other means of attacking/dealing damage will still damage Isaac as normal.
  • While Isaac has the Beelzebub transformation, all Boom Fly variants will become friendly, and will not damage Isaac by any means (including explosions).

Variants[]

Red Boom Fly[]

Red Boom Flies fly across the room in straight diagonal lines, dealing contact damage and releasing 6 blood shots in all directions upon death.

Drowned Boom Fly[]

Added in Afterbirth

Drowned Boom Flies fly across the room in straight diagonal lines, dealing contact damage. Upon death, they explode and release 4 blood shots in the cardinal directions, and sometimes also spawns a Drowned Charger Drowned Charger. If a Drowned Boom Fly dies while over an obstacle or pit, the Drowned Charger will not be spawned.

Dragon Fly[]

Added in Repentance

Dragon Flies fly across the room in straight diagonal lines, dealing contact damage. Upon death, creates four lines of fire in the cardinal directions; the fire nearly spans the length of an entire normal-sized room.

Dragon Fly X[]

Added in Repentance

Dragon Fly X is identical to the Dragon Fly in behavior, but upon death, creates four lines of fire in the ordinal directions; the fire nearly spans the length of an entire normal-sized room.

Bone Fly[]

Added in Repentance

Bone Flies fly across the room in straight diagonal lines, dealing contact damage and firing bones at Isaac if he lines up with one in a cardinal direction. Upon death, they shoot 3 evenly spaced bones (one of them aligned towards the closest cardinal direction to Isaac).

Sick Boom Fly[]

Added in Repentance

Sick Boom Flies fly across the room in straight diagonal lines, dealing contact damage and trailing poisonous gas. Upon death, they explode into eight clouds of gas and release 6 green shots in all directions. The poison gas left behind upon death persists for much longer, but will dissipate when the room is cleared.

Tainted Boom Fly[]

Added in Repentance

Tainted Boom Flies fly across the room in straight diagonal lines, dealing contact damage. Upon death, they will emit a cross-shaped glow for a brief period, after which they will explode. This explosion sends 4 line of further explosions in the cardinal directions, which span the length of the room.

They are exclusive to the Ascent to Home Home.

Gallery[]

Trivia[]

  • Added in Repentance The Boom Fly is tied with the Sucker Sucker for being the monster with the most true variants ('true variants' being monsters with ID x.1, x.2, etc), both with 7.


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