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Wiggle Worm

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-121061695This article refers to the original game.
This article refers to the item only from the original game. For the trinket from Rebirth, see Wiggle Worm.
For other uses, see Worm (disambiguation).

Wiggle Worm is a passive item only available in the original The Binding of Isaac game. It is a blue/green-colored worm with a "wiggly" appearance.

In Rebirth, the Wiggle Worm turns into a trinket.


Isaac clenches his teeth with his mouth wide open similar to ???, while his eyes grew smaller and quickly move back and forth.

  • 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 Isaac are standing right between two squares and shoot, the width will become 2 squares and he 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.


  • 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
<320/203 Dollar Bill8 Inch Nails9 VoltAbaddonAnemicAnkhAnti-GravityAquariusAriesAthameBall of TarThe BatteryThe BeltBest Friends ForeverBetrayalBinkyThe Black BeanBlack CandleBlack LotusBlack PowderBlood BagBlood ClotBlood Of The MartyrBloody LustBlue CapBlue MapBobby-BombBob's CurseThe BodyBogo BombsBomber BoyBoom!BoxBrimstoneBucket Of LardBursting SackButt BombsCaffeine PillCain's Other EyeCambion ConceptionCapricornCar BatteryCat-O-Nine-TailsCeltic CrossCenserCeremonial RobesChampion BeltChaosCharm Of The VampireChemical PeelChocolate MilkCircle of ProtectionThe Common ColdThe CompassContinuumContract From BelowCrack JacksCricket's BodyCricket's HeadCrown Of LifeCupid's ArrowCursed EyeCurse of the TowerDaddy LonglegsDark MatterDead DoveDead EyeDead OnionDeath's TouchDeep PocketsA DollarDr. FetusE ColiEden's BlessingsEmpty VesselEpic FetusEpiphoraEve's MascaraEvil EyeExperimental TreatmentExplosivoFanny PackFateFruit CakeGB BugGimpyGlitter BombsGnawed LeafGodheadGod's FleshGoat HeadGrowth HormonesGuillotineGuppy's CollarGuppy's TailHabitThe HaloHead Of The KeeperHive MindHoly GrailHoly Light!Holy MantleHoly WaterHot BombsHumbling BundleImmaculate ConceptionInfamyInfestationInfestation 2The Inner EyeIPECACIron BarIsaac's HeartJesus JuiceJudas' ShadowJuicy SackKidney StoneThe LadderLatch KeyLazarus' RagsLeoLibraLittle BaggyLoki's HornsLord Of The PitLost ContactLucky FootThe Ludovico TechniqueA Lump of CoalLusty BloodMaggy's BowMagic 8 BallMagic MushroomMagic ScabMagnetoThe MarkMarkedMatch BookMaw of the VoidMEAT!Midas' TouchThe MindMini MushMissing Page 2Missing No.MitreMom's Coin PurseMom's ContactsMom's EyeMom's EyeshadowMom's HeelsMom's KeyMom's KnifeMom's LipstickMom's PearlsMom's PerfumeMom's PurseMom's UnderwearMom's WigMoney = PowerMonstro's LungMore OptionsMr. DollyMr. MegaThe MulliganMutant SpiderMysterious LiquidMy ReflectionMy ShadowNight LightNo. 2Number OneOdd Mushroom (Large)Odd Mushroom (Thin)Old BandageOuija BoardThe PactPageant BoyThe ParasitePay To PlayPentagramPHDPiggy BankPiscesPlacentaProptosisPupula DuplexPurityPyromaniacA QuarterRaw LiverRestockRoid RageRosaryRubber CementSack HeadSacred HeartSad BombsThe Sad OnionSafety PinSagittariusSamson's ChainsScapularScatter BombsScorpioScrewSerpent's KissSharp PlugSkatoleSkeleton KeyThe Small RockSMB Super Fan!Soy MilkThe SoulSpear of DestinySpeed BallSpelunker HatSpider BabySpider's BiteSpirit Of The NightSpoon BenderSqueezyStarter DeckSteam SaleStem CellsStevenSticky BombsStigmataStop WatchStrange AttractorSuper BandageSynthoilTaurusTech XTechnologyTechnology 2Technology .5The NegativeThe PolariodThere's OptionsThunder ThighsTiny PlanetTooth PicksTough LoveToxic ShockTractor BeamTranscendenceTreasure MapTrinity ShieldVirgoThe VirusThe WaferWhore Of BabylonWire Coat Hanger!The WizWooden SpoonXRay VisionZodiac
Activated Items
Anarchist CookbookThe BeanBest FriendThe BibleBlank CardBlood RightsBob's Rotten HeadThe Book of BelialBook Of RevelationsBook of SecretsBook of ShadowsThe Book Of SinThe BoomerangeBox of FriendsBox of SpidersBreath Of LifeButter BeanThe CandleConverterCrack The SkyCrystal BallD7D8D10D12D100D20D4Dad's KeyDead Sea ScrollsDeck Of CardsThe DiceDiplopiaDoctor's RemoteFlush!Forget Me NowFriendly BallThe GamekidGlass CannonGlowing Hour GlassGuppy's HeadGuppy's PawHead of KrampusThe HourglassHow To JumpIsaac's TearsIV BagThe JarJar of FliesKamikaze!Kidney BeanLemon MishapMagic FingersMega BeanMega BlastMine CrafterMom's Bottle of PillsMom's BoxMom's BraMom's PadMonster ManualMr. BoomMy Little UnicornThe NailThe NecronomiconNotched AxePandora's BoxThe Pinking ShearsPlaceboThe PoopPortable SlotPolyphemusPrayer CardRazor BladeRed CandleRemote DetonatorSatanic BibleShoop Da Whoop!ScissorsSpider ButtTammy's HeadTear DetonatorTeleport!Teleport 2.0Telepathy For DummiesUndefinedUnicorn StumpVentricle RazorWhite PonyWooden NickelYum Heart
???'s Only Friend1UPAbelBall of BandagesBest BudBig ChubbyBig FanBob's BrainBomb BagBrother BobbyBumboBum FriendCharged BabyCube of MeatDark BumDead BirdDead CatDistant AdmirationDemon BabyFarting BabyFate's RewardFinger!Forever AloneFriend ZoneGeminiGhost BabyGuardian AngelGuppy's Hair BallHalo of FliesHarlequin BabyHeadless BabyHost HatIncubusKey BumKey Piece 1Key Piece 2Lil' BrimstoneLil' ChestLil GurdyLil' LokiLittle C.H.A.D.Little ChubbyLittle GishLittle SteveLost FlyMilk!Mongo BabyMultidimensional BabyMystery SackObsessed FanPapa FlyThe PeeperPunching BagRainbow BabyThe RelicRobo-BabyRobo-Baby 2.0Rotten BabyRune BagSack Of PenniesSacrificial DaggerSeraphimSissy LonglegsSister MaggySmart FlySpider ModSuccubusSworn Protector
Health Items
A SnackBreakfastDessertDinnerLunch
TBoI-only items
Max's HeadWiggle Worm

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