Mom's Heart

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Mom's Heart
Boss Mom's Heart.png
Base HP
950
Stage HP
0
Found In
Stage womb.pngStage utero.pngStage scarred womb.pngStage the void.png
Dropped Items
End Chest

Mom's Heart is the final boss in the second floor of the fourth chapter. Until It Lives is unlocked, Mom's Heart cannot be continued past unless a Devil Room or an Angel Room appears, which allow you to go to Sheol or The Cathedral, respectively. After being killed 11 times, Mom's Heart will be permanently replaced by It Lives.

Mom's Heart doesn't drop any items or pickups upon death besides hearts.

Behavior[edit | edit source]

Mom's Heart acts very differently from the original Binding of Isaac.

At the beginning of the fight, Mom's Heart will always be accompanied by two Eyes.

It has many different types of attacks, seeming to vary depending on the amount of remaining health. Many of the attacks are varying flurries of orbs that scatter across the room, which can be difficult to dodge. These orbs range from several orbs released in every direction while slowly rotating, to a fast moving line of projectiles released in four directions rotating moderately fast.

Mom's Heart also has an attack that shoots blood tears rapidly when it's ~40% lower on HP. Mom's Heart will also occasionally retreat upwards and launch blood shots diagonally forward in a spread, at which point it cannot be harmed and it will spawn various enemies. All of its attacks can hurt its own minions.

Enemies spawned by Mom's Heart are:

After losing a significant amount of health (about 90%), Mom's Heart will stop spawning enemies and will begin to shoot four Brimstone Brimstone
Brimstone Icon.pngTears are replaced by a laser beam that pierces through all enemies and obstacles in its path and deals high damage. Can only be fired after a short charge-up period.
lasers that rotate either clockwise or counter-clockwise. At the very top of the boss room is a small area where walking into it counts as though Isaac walked into the heart.

Upon defeat Mom's Heart fires a single ring of tears.

Notes[edit | edit source]

  • Using The Bible The Bible
    The Bible Icon.png6 roomsUpon activation, Isaac gains flight, allowing him to pass over all obstacles in the current room. Instantly kills Mom, Mom's Heart, and It Lives when activated, but will kill Isaac when activated while fighting Satan.
    against Mom's Heart will kill it instantly.

Unlockable Achievements[edit | edit source]

Gallery[edit | edit source]

Trivia[edit | edit source]

  • The music that plays during this fight is titled Ventricide. Ventricide is a made-up word formed from the word ventricle (one of the two larger chambers of the heart) and the suffix -cide, which denotes an act of killing. This theme is used in other tracks, such as Matricide, Hericide, and Infanticide.
  • If Isaac gets hit by Mom's Heart's Brimstone attack, Mom's laugh can be heard.
  • Mom's Heart can appear as a random boss in The Void, even after being replaced by It Lives in its regular chapter.

Bugs[edit | edit source]

Bug Bug! Sometimes, if the boss intro is skipped, the game will not teleport Isaac into the center of the bottom of the room, resulting in immediate contact damage with one of the Eyes or Mom's Heart, depending on the direction of the room's entrance.
Bosses Boss Monstro.png
Chapter 1 Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2 C.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusCarrion QueenThe Wretched
Added in Afterbirth The ForsakenThe FrailThe Stain
Added in Afterbirth † Big HornRag Mega
Chapter 3 The AdversaryThe BloatThe CageThe GateGishLokiMask of InfamyMonstro IIWarMom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4 BlastocystThe BloatConquestDaddy Long LegsDeathIt LivesLokiiMama GurdyMom's HeartMr. FredScolexTeratomaTriachnid
Added in Afterbirth † Sisters VisThe Matriarch
Added in Afterbirth Blue Womb Added in Afterbirth Hush
Chapter 5 SatanIsaac
Chapter 6 ???The LambMega Satan
Added in Afterbirth Greed Mode Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
Added in Afterbirth † The Void Added in Afterbirth † Delirium
Chapters 1-4 The FallenThe Headless Horseman


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