Mom's Heart

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Boss Mom's Heart name.png
Boss versus screen image
 
 
Table dividing line 1.png
 
In-game appearance
Table dividing line 2.png
 
Boss
Stage The Womb icon.pngStage Utero icon.png
Added in Afterbirth / Removed in Afterbirth †Stage Scarred Womb icon.png
Stage The Void icon.png
Table dividing line 3.png
 
End Chest
 
The Womb Defeat Mom for the 1st timeThe WombThe Womb

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 retreat upwards and launch blood shots diagonally forward in a spread, at which point it cannot be harmed and it will spawn various enemies. During Mom's Heart's first retreat upwards, Eyes will always be the first wave spawned, after the 2 Eyes that spawn with Mom's Heart are killed. 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 BrimstoneBrimstone Rebirth 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.

Gallery[edit | edit source]

  • Mom's Heart ingame.

  • Mom's Heart as one of Delirium's forms.

Unlockable Achievements[edit | edit source]

  • Everything Is Terrible!!!
    Everything Is Terrible!!! - Defeat Mom's Heart 5 times.

Notes[edit | edit source]

  • Every time Mom's Heart is defeated changes the current savefile's image until It Lives is unlocked.
  • Using The Bible The BibleThe 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.

Trivia[edit | edit source]

  • Mom's Heart appeared in the original The Binding of Isaac.
  • 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.
  • In the original Binding Of Isaac, all Mom's Heart did was spawn 2-4 monsters before disappearing and repeating the same move each time the wave of monsters were killed off.

Bugs[edit | edit source]

Bug Bug! Removed in Afterbirth † 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.


Mom Unlocks Mom Unlocks Mom Unlocks
Added in Afterbirth Added in Afterbirth †
The WombThe WombDefeat Mom for the 1st timeThe HarbingersThe HarbingersDefeat Mom for the 1st timeA Cube of MeatA Cube of MeatDefeat Mom for the 1st timeA HaloA HaloDefeat Mom using The BiblePuristPuristDefeat Mom for the first time XXXXXXXXLXXXXXXXXLDefeat Mom for the 1st timeSPEED!SPEED!Defeat Mom for the 1st timeHave a HeartHave a HeartDefeat Mom for the 1st timePRIDE DAY!PRIDE DAY!Defeat Mom for the 1st timeOnan's StreakOnan's StreakDefeat Mom for the 1st timeThe GuardianThe GuardianDefeat Mom for the 1st time Aprils foolAprils foolDefeat Mom for the 1st time
Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png 		Blighted Ovum • Dingle • The Duke of Flies • Famine • Fistula • Gemini • Gurglings • The Haunt • Larry Jr. • Monstro • Pin • Steven • Widow • The Fallen • The Headless Horseman
Added in Afterbirth Dangle • Little Horn • Rag Man • Turdlings
Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png 		Carrion Queen • C.H.A.D. • Chub • Dark One • Gurdy • Gurdy Jr. • The Hollow • The Husk • Mega Fatty • Mega Maw • Peep • Pestilence • Polycephalus • The Wretched • The Fallen • The Headless Horseman
Added in Afterbirth The Forsaken • The Frail • The Stain
Added in Afterbirth † Big Horn • Rag Mega
Chapter 3
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png 		The Adversary • The Bloat • The Cage • The Gate • Gish • Loki • Mask Of Infamy • Monstro II • War • The Fallen • The Headless Horseman • Mom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png 		Blastocyst • The Bloat • Conquest • Daddy Long Legs • Death • Lokii • Mama Gurdy • Mr. Fred • Scolex • Teratoma • Triachnid • The Fallen • The Headless Horseman • Mom's Heart • It Lives
Added in Afterbirth † Sisters Vis • The Matriarch
Added in Afterbirth Blue Womb
??? 		Added in Afterbirth Hush
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png 		Satan • Isaac
Chapter 6
Stage Dark Room icon.pngStage The Chest icon.png 		??? • The Lamb • Mega Satan
Added in Afterbirth † The Void
Stage The Void icon.png 		Added in Afterbirth † Delirium
Added in Afterbirth Greed Mode
Ultra Greed 		Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
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