The Binding of Isaac Wiki
For other uses, see Worm (disambiguation).

Wiggle Worm is a passive item.


Isaac's tears travel in sinusoidal (wave) patterns. Tears travel in the direction they were shot, regardless of the direction Isaac was moving. Increases rate of fire by 1.

The width of the patterns is normally 1 square. If you are standing right between two squares and shoot, the width will become 2 squares and you will be able to shoot the enemies behind a rock.


  • Technology - The laser beam curves in the same pattern as the wiggle worm with tears, widening the affected area nearly to Isaac's full body width. A second, darker laser appears, mirroring the first beam.
  • Inner Eye - If shot while standing in a square, one tear will be fired as normal, and the other two will move in the normal wave pattern, seeming to circle around the middle tear. If shot between two rows/columns, two tears will be shot together and move in a wave pattern in one row/column, and the other tear will do the same in the adjacent row/column.
  • Mutant Spider  - The four shots all group together, instead of spreading.
  • Bob's Rotten Head - Makes the head move in a wave pattern.
  • Tammy's Head - Gives cardinal direction shot grouping.


  • The Wiggle Worm was inspired by one of the shooting patterns from the NES game, Fester's Quest.
  • In The Binding of Isaac: Rebirth, the Wiggle Worm was reworked into a trinket.


  • If Polyphemus is acquired and then Wiggle Worm, shots occasionally fail to oscillate.
  • Paired with My Reflection, shot tears will be locked in its original axis; normally, when firing with My Reflection, tears will come back to Isaac, no matter what movement they have to go through, but with Wiggle Worm, these shots will only come back on a horizontal axis if fired horizontally, and a vertical axis if fired vertically.
Passive Items Tear Modifiers: The Inner EyeSpoon BenderMy ReflectionSkatoleCube of MeatCupid's ArrowDr. FetusMom's EyeWiggle WormTechnologyChocolate MilkLoki's HornsLittle ChubbySpider's BiteThe Common ColdThe ParasiteMom's ContactsMom's KnifeOuija BoardBrimstoneA Lump of Coal

(Wrath of the Lamb DLC: IPECACTough LoveTechnology 2Mutant SpiderEpic FetusPolyphemusSacred Heart)

Stat Ups: The Sad OnionMax's HeadNumber OneBlood of the MartyrMagic MushroomRoid RageRaw LiverLunchDinnerDessertBreakfastRotten MeatWooden SpoonThe BeltMom's UnderwearMom's HeelsMom's LipstickWire Coat HangerStevenPentagramThe MarkGrowth HormonesMini MushroomThe PactSmall RockSuper BandageRobo-BabyLittle C.H.A.D.Little GishLittle SteveThe RelicThe HaloMoney Equals PowerBlood BagOdd Mushroom (Thin)Odd Mushroom (Large)Whore Of BabylonBucket Of Lard
(Wrath of the Lamb DLC: StigmataSpeed BallChemical PeelBloody LustCat-O-Nine-TailsStem CellsTooth PicksSMB Super Fan!MEAT!Magic 8 BallSqueezyJesus Juice)

Familiars and Orbitals: Brother BobbyHalo Of FliesDistant AdmirationSister MaggyGuardian AngelDemon BabyDead BirdForever AloneSack Of PenniesBomb Bag
(Wrath of the Lamb DLC: Bum FriendThe PeeperGhost BabyHarlequin BabyDaddy LonglegsSacrificial DaggerRainbow BabyHoly WaterGuppy's Hair BallAbel)

Others: 1UPThe VirusLess Than ThreeSkeleton KeyA DollarA QuarterBoom!TranscendenceThe CompassPHDRosaryXRay VisionLucky FootMagnetoTreasure MapThe LadderCharm Of The VampireThe BatterySteam SaleDead CatLord Of The PitSpelunker HatMr. MegaThe Wafer9 VoltBobby-Bomb
(Wrath of the Lamb DLC: Guppy's TailMom's PurseBob's CursePageant BoyScapularInfestationThe MulliganHabitSpirit Of The NightAnkhCeltic CrossMitreFateThe Black BeanHoly GrailDead DovePyro3 Dollar BillMom's Coin PurseBox)

Activated Items Base Items: The PoopMr. BoomTammy's HeadMom's BraKamikazeMom's PadBob's Rotten HeadTeleport!My Little UnicornYum HeartDoctor's RemoteShoop Da Whoop!Lemon MishapThe HourglassThe NailWe Need To Go Deeper!Deck of CardsMonstro's ToothThe GamekidMom's Bottle of PillsThe DiceThe Pinking ShearsThe BeanDead Sea ScrollsRazor BladeForget Me NowA Pony

(Wrath of the Lamb DLC: Guppy's PawIV BagBest FriendRemote DetonatorGuppy's HeadPrayer CardNotched AxeCrystal BallCrack The SkyThe CandleD20Spider ButtDad's KeyPortable SlotWhite PonyBlood Rights)

Books: The BibleThe Book of BelialThe NecronomiconBook Of RevelationsBook of ShadowsAnarchist CookbookThe Book Of SinMonster Manuel
(Wrath of the Lamb DLC: Telepathy for Dummies)