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Smart Fly

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Key Master Key Master|- Treasure Room Treasure Room|- Greed mode only Treasure Room Treasure Room
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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.

Notes[edit | edit source]

  • Smart Fly does not take up one of the three orbital slots; it floats between two of the other orbitals.
  • Very useful in Boss Rush as it will remain aggressive until it is completed. A strategy for Isaac would be to willingly damage himself right at the start to trigger the Smart Fly so it deals with all the bosses.

Synergies[edit | edit source]

  • Added in Afterbirth †Duct Tape Duct TapeDuct Tape Icon.pngStops Isaac's familiars from moving.: Fly will stay in place when orbiting Isaac but will still pursue enemies.
  • Added in Afterbirth †Dull Razor Dull RazorDull Razor Icon.png2 roomsHurts Isaac without depleting health, activating any items that trigger upon taking damage.: Allows releasing the Smart Fly to attack enemies without taking actual damage.

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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