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
Stage The Void icon.png

Stage Scarred Womb icon.png
(Pre-Booster Pack #5)
Table dividing line 3.png
 
End Chest
 
The Womb Defeat Mom

Mom's Heart is the boss in the second floor of the fourth chapter, and the final boss of Endings 1-11. 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.

After a while, Mom's Heart will retreat upwards and launch four diagonal lines of red projectiles in a spread that slowly rotate, at which point it cannot be harmed, even if the Eyes that spawn with it hadn't been killed yet. After these Eyes are killed, Mom's Heart will spawn a wave of various enemies of the same type, which can be:

Eyes will always be the first wave spawned after the two Eyes that accompany Mom's Heart are killed.

After killing an entire wave, Mom's Heart will lower itself again and shoot red projectiles in different patterns, which include:

  • 10 projectiles in all directions that expand outwards either continously or in a pulsating manner.
  • 3 pulsating curved lines of projectiles that rotate and expand outwards.
  • 2 rings of ten projectiles that pulsate outwards at different intervals.
  • A single line of projectiles that follows Isaac.
  • 8 slightly curved lines of projectiles that rotate and expand outwards.
  • 5 lines of projectiles that mimic Isaac's movements (these lines have no space between projectiles).
  • 4 curved lines of projectiles that continously rotate and expand outwards.

After shooting enough projectiles, Mom's Heart will retreat upwards again and spawn another wave of enemies.

After losing 40% of it's health, Mom's Heart will beat faster and no longer retreat upwards, and it will shoot projectiles and spawn enemies simultaneously. However, all of its attacks can hurt its minions, which often results in them being killed quickly.

After losing 90% of its health, Mom's Heart will stop spawning enemies and will begin to shoot four diagonal Brimstone Brimstone lasers that rotate either clockwise or counterclockwise. 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 14 projectiles.

Gallery[edit | edit source]

  • Mom's Heart ingame.

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

Unlockable Achievements[edit | edit source]

  • A Noose
    A Noose - Defeat Mom's Heart 3 times.
  • Everything Is Terrible!!!
    Everything Is Terrible!!! - Defeat Mom's Heart 5 times.
  • Ipecac
    Ipecac - Defeat Mom's Heart 6 times.
  • ???
    ??? - Defeat Mom's Heart 10 times.


Notes[edit | edit source]

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 Brimstone attack, Mom's laugh can be heard.
  • Added in Afterbirth Mom's Heart can appear in the nightmare boss wave of Chapter 4 in Greed/Greedier Mode, even after being replaced by It Lives in Normal and Hard Mode.
    • Added in Afterbirth † Similarly, Mom's Heart can appear as a random boss in The Void The Void, even after being replaced by It Lives in Chapter 4.
  • Added in Afterbirth † As of Booster Pack #5, since it is required to defeat It Lives 30 times to unlock the Scarred Womb, Mom's Heart can no longer appear in that environment.
  • 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.
  • During the versus screen, Mom's Heart's enemy-spawning sound can be heard. Mom's Heart is one of six bosses that can be hear during the versus screen, the other five being The Stain, The Forsaken, Big Horn, Mom and It Lives.

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
The WombThe HarbingersA Cube of MeatPurist XXXXXXXXLSPEED!Have a HeartPRIDE DAY!Onan's StreakThe Guardian Aprils fool
Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png 		Gemini • Steven • Blighted Ovum • Dingle • The Duke of Flies • Famine • Fistula • Gurglings • The Haunt • Larry Jr. • Monstro • Pin • Widow • The Fallen • The Headless Horseman
Dangle • Little Horn • Rag Man • Turdlings
Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png 		Chub • C.H.A.D. • Carrion Queen • Dark One • Gurdy • Gurdy Jr. • The Hollow • The Husk • Mega Fatty • Mega Maw • Peep • Pestilence • Polycephalus • The Wretched • The Fallen • The Headless Horseman
The Forsaken • The Frail • The Stain
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 • Monstro II • Gish • Loki • Mask of Infamy • War • The Fallen • The Headless Horseman • Mom
Brownie
Sisters Vis
Chapter 4
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png 		Blastocyst • The Bloat • Conquest • Daddy Long Legs • Triachnid • Death • Lokii • Mama Gurdy • Mr. Fred • Scolex • Teratoma • The Fallen • The Headless Horseman • Mom's Heart • It Lives
Sisters Vis • The Matriarch
Blue Womb
??? 		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
The Void
Stage The Void icon.png 		Delirium
Greed Mode
Ultra Greed 		Ultra Greed
Ultra Greedier
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
Achievements Achievements Attributes Attributes Bosses Bosses TarotCard.png Cards and Runes Challenges Challenges Chapters Chapters
Characters Characters MainPageBabies.png Co-op Items Items Item pools Item pools Monsters Monsters Objects Objects
Pickups Pickups Pills Pills Rooms Rooms Seeds Seeds Transformations Transformations Trinkets Trinkets
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