Jar of Flies

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Item icon
Item altar
 
 
 
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Unlimited Unlimited
 
Item Pool Shop.png Shop
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(page 4, column 9, line 4)
Added in Afterbirth

Jar of Flies is an activated item added in Afterbirth.

Effects[edit | edit source]

  • Killing an enemy adds a fly to the jar, up to a maximum of 20.
  • Upon use, releases Blue Flies equal to the number of flies in the jar.
  • This item belongs to the Beelzebub
    Beelzebub App.png
  • Flight.
  • Converts small enemy flies into blue flies.
  • set. Collecting three items from this set will transform Isaac into a giant humanoid fly.

Notes[edit | edit source]

  • Kills by blue flies and locusts (including flies from the jar) and shooting familiars (including Incubus) do not add flies to the jar.
  • Blue spiders, orbital familiars, and chasing familiars do add flies to the jar.
  • Friendly enemies such as from the Friendly Ball add flies to the jar, but not those spawned from other enemies.
  • Batteries do not affect the number of flies in the jar.
  • Enemies must be actually killed to add a fly; transformations (such as Gapers turning into Pacers) or knockouts (such as incapacitating a Globin) do not count as kills.
  • Destroying a Shopkeeper will count a kill.
  • With items that kill normally unkillable enemies, killing things like Stone Grimaces will add flies to the jar.
  • Killing minions in the Hush fight does not add flies to the jar.

Interactions[edit | edit source]

  • Car Battery Car BatteryCar Battery Icon.pngCauses Isaac's activated item to activate twice on each use.: No effect.

Synergies[edit | edit source]

  • Hive Mind Hive MindHive Mind Icon.pngIncreases the size of blue spiders and Blue Flies and doubles the amount of damage they deal.: Flies are bigger and deal double damage.
  • Added in Afterbirth †Fish Tail Fish TailFish Tail Icon.pngItems and trinkets that generate blue flies or blue spiders will generate twice as many.: Doubles the number of flies that spawn.
  • Added in Afterbirth †Schoolbag SchoolbagSchoolbag Icon.pngAllows Isaac to hold two active items.: Flies will be gained even while the Jar of Flies is in the inactive slot.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • The item's pickup quote references the tagline of the Pokémon games.
  • Added in Afterbirth † With Booster Pack #2, this item's sprite fills up with more flies depending on how many flies it contains. This is based off of this Steam Workshop mod by Stewartisme.
  • The item is likely a reference to the Alice In Chains album of the same name.

Seeds[edit | edit source]

 PC  KTHW HTAY (First floor, in the shop)


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