Smart Fly

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Item icon
Item altar
Table dividing line 1.png
Table dividing line 2.png
Key Master Key Master
Treasure Room Treasure Room
Greed mode only Treasure Room Treasure Room
Table dividing line 3.png
Added in Afterbirth(page 3, column 19, row 1)
Removed in Afterbirth(page 3, column 9, row 6)

Smart Fly is a passive item.

Effect[edit | edit source]

  • Spawns an orbital fly whose behavior changes depending on whether or not Isaac has taken damage in the current room.
    • The fly always deals 1.5 damage per tick or 22.5 damage per second on contact with enemies.
    • Before Isaac takes damage, the fly serves as an orbital familiar, blocking enemy shots.
    • After Isaac takes damage, this fly will seek out nearby enemies and attack them.
  • This item belongs to the Beelzebub set. Collecting three items from this set will transform Isaac into a giant humanoid fly.

Notes[edit | edit source]

  • Smart Fly does not take up one of the three orbital slots; it floats between two of the other orbitals.

Interactions[edit | edit source]

  • Added in Afterbirth †Duct Tape Duct Tape: Fly will stay in place when orbiting Isaac but will still pursue enemies.

In-game Footage[edit | edit source]

Seeds[edit | edit source]

 PC  CAKK GWMX (First floor treasure room)

 PC  YYH2 YJ4B (Treasure room adjacent to spawn)

 PC  ER9T 2RPF (First floor treasure room)

 PS4  WV2E FB1R (First floor treasure room)

 PS4  1ZTZ EC7A (First floor treasure room)

 Switch  Greed mode only 396D QBP0 (First Golden Treasure Room)

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