Angry Fly

Treasure Room

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Become BeelzebubAngry Fly

Angry Fly is an unlockable passive item added in Booster Pack #1.

Effects

• Spawns a fly familiar that orbits around a random enemy and deals 5 damage per tick (about 10.75 damage per second) to enemies it comes in contact with.
  • If the enemy it is orbiting dies, it starts orbiting a different enemy.
  • If there are no enemies, it orbits Isaac.

Notes

• Angry Fly will orbit around invincible enemies such as Stone Grimaces without dealing damage.
• Due to its movement pattern, its actual damage dealt per second is erratic against most enemies and groups of them.

Interactions

• Hive MindIncreases the size of blue spiders and Blue Flies and doubles the amount of damage they deal.: No effect.

Trivia

• Angry Fly is based on this Steam Workshop item by Custom Phase.
• Angry Fly behaves similarly to Level 2 Fly and may be a smaller version of Full Fly, as they both share similar shapes and colors.

Gallery

• 

  Angry Fly's original appearance prior to Booster Pack #4.

Fly Items

• ???'s Only FriendSummons a big attack fly that can be controlled with the shooting direction-keys.
• Angry FlySpawns a fly familiar that orbits around a random enemy and deals 5 damage per tick to enemies it comes in contact with.
• BBFSpawns a familiar that flies around the room in a manner similar to the Boom Fly and explodes on contact with an enemy. Respawns after ten seconds.
• Best BudWhen hit, summons a white attack fly similar to Distant Admiration for the current room.
• Big FanSpawns a large orbital familiar that blocks enemy projectiles and deals slight contact damage to enemies.
• Distant AdmirationA red attack fly circles further out than the Halo of Flies / Pretty Flies, but closer than Forever Alone. Deals more damage than Forever Alone.
• Forever AloneSpawns a blue attack fly that orbits a long distance from Isaac.
• Friend ZoneA white orbiting fly which deals 3 contact damage per tick to enemies. This familiar orbits Isaac at a middle length distance somewhere between Distant Admiration and Forever Alone.
• Halo of FliesSpawns two pretty fly familiars that block enemy shots and deal contact damage to enemies.
• Hive MindIncreases the size of blue spiders and Blue Flies and doubles the amount of damage they deal.
• Infestation1-3 Blue flies randomly spawn every time Isaac gets hit.
• Jar of FliesEvery time Isaac kills an enemy, a fly will be added to the jar, up to a maximum of 20. Using the Jar of Flies will release all the flies that are currently in the jar as friendly blue flies that will damage enemies.
• Lost FlyA familiar fly that moves in a straight line and attaches itself to the first obstacle or wall it comes into contact with in each room. If any enemies walk into its path, it will deal 7 contact damage per tick. If the obstacle it is attached to is destroyed then it will continue rolling in the direction it was previously travelling until it meets another wall or obstacle.
• The MulliganTears have a 1/6 chance of spawning allied blue flies when they hit an enemy.
• Obsessed FanA purple fly familiar that follows Isaac's movements on a 3 second delay and deals contact damage to enemies.
• Papa FlyA blue fly familiar follows Isaac's movements on a 3 second delay. Papa Fly will fire tears at nearby enemies.
• SkatoleAll types of fly except Boom Fly and Red Boom Fly become passive and slowly move towards Isaac. Does not prevent contact damage.
• Smart FlyAfter Isaac takes damage, this fly will deal continuous touch damage to whatever enemy caused the damage until it is dead. The fly will then systematically attack 1 enemy at a time until the room is cleared.

Booster Packs
#1	Angry FlySpawns a fly familiar that orbits around a random enemy and deals 5 damage per tick to enemies it comes in contact with. Black HoleThrows a black hole on the ground which sucks in and damages enemies. BozoIncreases damage by a flat 0.1 and grants a soul heart. Enemies can randomly become briefly charmed or feared. Taking damage has a chance to spawn a rainbow poop. Broken ModemEnemies, enemy shots, tears, and pickups will briefly freeze in place at random intervals. Mystery GiftUpon use, spawns a random item from the current room's item pool, with a chance to spawn A Lump of Coal or The Poop instead. SprinklerUpon use, spawns a sprinkler that rotates and fires tears. Fast BombsGrants 7 bombs and allows bombs to be placed rapidly. Buddy in a BoxGrants a familiar with a random tear effect. The familiar is randomized at the start of each floor. Lil DeliriumGrants a familiar that transforms into another random familiar every 10 seconds. HairpinFully recharges Isaac's active item upon entering a boss fight. Wooden CrossGrants a Holy Mantle shield upon entering a new floor, which protects against one hit of damage. Butter!Using an active item will drop it onto a pedestal on the ground. Taking damage may result in dropping a passive item. Huge GrowthMakes Isaac large for the current room, increasing his range and damage. Ancient RecallSpawns 3 random cards. Era WalkFor the current room, enemies are slowed, Isaac's speed is increased, and his shot speed is decreased.
#2	Jumper CablesGrants an active item charge every 15 enemies killed. CouponUpon use, makes a random item from a shop, devil deal, or black market free. TelekinesisUpon use, for the next two seconds, any enemy shots that come near Isaac are held in place. After the charge is depleted, they are fired back as tears. Moving BoxIf the box is empty, picks up all items and pickups in a room and stores them. If the box is not empty, places all stored items and pickups in the current room. Technology ZeroConnects Isaac's tears with electricity that can damage enemies. LeprosyUpon taking damage, grants a body part as an orbital, which blocks enemy shots and deals 7 damage per tick to enemies it comes in contact with. The orbitals will be destroyed if they take enough damage from enemies or enemy shots. Filigree FeatherAngels drop items instead of key pieces when defeated.
#3	7 SealsGrants a random Harbinger familiar that changes every 10 seconds. Mr. ME!Summons a controllable ghost that can perform various tasks depending on what it targets. Angelic PrismGrants a prism orbital with a large orbital radius. Tears that pass through the prism split into four multi-colored tears. Pop!Replaces Isaac's tears with eyeballs that can bounce off of each other. The eyeballs are not limited by range, and will instead dissipate when they stop moving or when hitting an enemy or obstacle. Door StopThe last door Isaac went through stays open, allowing him to leave the room even if enemies are in it.
#4	Death's ListGrants a reward if all enemies in a room are killed in the order they are marked. HaemolacriaTears are now fired in an arc. Upon hitting the floor, an obstacle, or an enemy, they burst into many smaller tears in all directions. Increases tear delay. LachryphagyIsaac's tears decelerate as they travel. Upon stopping or hitting an obstacle, they burst into 8 tears in all directions. Tears can be fired into other tears to feed them, increasing their damage. TrisagionTears are replaced with piercing white blasts of light. SchoolbagAllows Isaac to hold two active items. Extension CordBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
#5	BlanketGrants one soul heart. Upon entering a boss room, grants a shield that blocks one hit, then disappears. Sacrificial AltarUpon use, sacrifices up to 2 familiars and spawns an item from the Devil Room Pool for each familiar sacrificed. Lil SpewerSpawns a random pill, and grants a small Spewer familiar that charges up and fires different types of creep. MarblesSpawns 3 random trinkets. Taking damage has a small chance to swallow Isaac's currently held trinket, gaining its effect permanently. Mystery EggSpawns an egg familiar, which cracks and turns into a random charmed enemy when Isaac is hurt. The egg regenerates upon entering a different room. Flat StoneTears bounce off the floor. Tears that hit an enemy after bouncing deal splash damage to all nearby enemies for 25% of Isaac's tear damage. MarrowGrants one bone heart and spawns three red heart pickups. Slipped RibSpawns a bone familiar that circles around Isaac and reflects enemy shots. Hallowed GroundSpawns a white poop familiar, which turns into a white poop when Isaac is hurt. Pointy RibSpawns a bone familiar that can be aimed with the fire buttons and does contact damage. Book of the DeadUpon use, spawns a charmed Bony or an orbital bone for each enemy killed in the current room. Dad's RingCreates a ring of light around Isaac that petrifies enemies in contact. Divorce PapersSpawns a Mysterious Paper, increases tears, and grants a bone heart. Jaw BoneSpawns a familiar that flies the room while firing, dealing double Isaac's tear damage to enemies that come in contact and retrieving pickups. Brittle BonesReplaces all red hearts with 6 empty bone hearts. Upon losing a bone heart, Isaac fires bones in 8 directions and permanently gains a tears up. Broken ShovelWhile held, causes multiple Mom's Foots to come down and stomp on Isaac. One of two parts necessary to create Mom's Shovel. Broken ShovelOne of two parts necessary to create Mom's Shovel. Mom's ShovelSpawns a trapdoor that leads to the next floor upon activation. Unlocks The Forgotten when used on a mound of dirt that appears in The Dark Room. Rotten PennySpawns a blue fly every time a coin is picked up. Baby-BenderGrants Isaac's familiars homing shots. Finger BoneGrants a chance to gain a bone heart upon taking damage.