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Boom Fly

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Boom Fly

Boomfly

In-game sprite

Related Monsters:
-

Attacks:

  • Damages Isaac upon contact
  • Explodes upon death

Effective item(s):
N/A


Red Boom Fly

Spitfly

In-game sprite

Related Monsters:
-

Attacks:

  • Damages Isaac upon contact
  • Bursts into a 6-direction bullet shot upon death

Effective item(s):
N/A


Boom Flies are large Flies with small wings and large, beady eyes. They are mainly found in The Caves and The Depths.

Behavior

Boom Flies are much larger than normal Flies. Rather than trying to follow you, they will instead fly around the room diagonally, bouncing off walls. They have considerable health, taking at least six initial tears to go down. They explode upon death, typically killing all other monsters and dealing a full heart of damage in a small radius.

With a correct timing, they can be used to destroy Rocks or open up Secret Rooms.

When fighting a Boom Fly, it is advised to keep your distance from it and maintain considerable range; if you stay too close to it when you kill it, it will explode and deal damage to Isaac. Due to this, fighting a Boom Fly when the player has very low range is quite risky.

Champion Varieties

Red Boom Fly

Red Boom Flies move identically to regular Boom Flies, but will shoot 6 projectiles on death instead of exploding. The projectiles always have a set trajectory pattern so you can position yourself for safety.

Red Boom Flies can replace Boom Flies in any floor. They can also be spawned by Loki and the Blue Champion variant of Fistula.

Champion Varieties

Notes

  • The Skatole item slows down Boom Flies and Red Boom Flies drastically, but they will still explode on death and can damage Isaac.

Bugs

  • If you kill a Red Boom Fly before it moves, it will explode like a normal Boom Fly.

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