Binding of Isaac: Rebirth Wiki

Halo of Flies is a passive item.


  • Spawns two Pretty Flies that block enemy shots.
    • Pretty flies kill some fly enemies upon contact.
    • The orbital limit of three flies cannot be surpassed with this item, reducing its effectiveness if Isaac has two or more orbitals.
  • This item belongs to the Beelzebub set. Collecting three items from this set will transform Isaac into a giant humanoid fly.


In-game Footage[]


  • This item is used in Solar System (challenge #6).
  • This item is a reference[1] to Halo of Flies, by Alice Cooper.
  • Halo of Flies was the first orbital item that Edmund McMillen ever implemented into The Binding of Isaac.
  • Halo of Flies shares its name with a level from Edmund's previous game Super Meat Boy.


PC 3NAZ FBXB (Treasure Room adjacent to spawn)

PS4 Hard mode only H3HS N1D8 (Treasure Room adjacent to spawn)

Vita Normal mode only YW1Z FNRE (Treasure Room adjacent to spawn)

3DS AG90 88G2 (Treasure Room adjacent to spawn)

PC Added in Afterbirth Hard mode only BM3J 23NS (Treasure Room adjacent to spawn)