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Mom’s Heart is the final Boss of The Womb 2. In the beginning of the battle, She is always accompanied by two Eyes.

After Mom's Heart has been defeated 11 times, She is replaced with It Lives!.


Mom's heart spawns two to four Monsters and then disappears. After killing those monsters, the heart will reappear in the middle of the room for 3–4 seconds, spawn more monsters, then disappear again. If you manage to kill the monsters within two seconds from their spawning (before the Heart disappears), Mom's Heart will stay on screen and spawn a next pack.

Eternal Mom's Heart has a similar set of behaviors, chasing the player around the room and spawning two to four Eternal Monsters. She attacks frequently during the battle, spawning blood bombs and making red Creep. Unlike the normal variant, Eternal Mom's Heart stays on screen at all times. If you manage to kill all the monsters in the room, the next pack of monsters will be spawned instantly. When Mom's Heart is on low health, she will spawn blood bombs at a faster pace.


Provided you have bombs, placing a bomb just as the heart is about to drop into vision will not only damage the heart, but may also destroy any monsters the heart spawns; this can afford you essentially double the attack time against the heart.

When Mom's Heart drops down to 33% health, she will stop hiding but continuously spawn monsters and start firing blood bombs similar to IPECAC shots. The explosions leave a large puddle of red Creep that damages Isaac on contact. The monsters she spawns in this phase are usually weaker, consisting largely of various small flies.

If you are lucky enough to make it to Mom's Heart with technology, stand on the same horizontal line as she on either side and just hold down the attack button. If you've positioned yourself right, everything she spawns will be in the same line as your fire, effectively killing she and damaging the heart without any movement.

Alternatively, using The Bible will act as an instant kill, similar to using it on Mom.

Champion Variants[]


Mom's Heart is much more difficult to defeat when she is Eternal. She slowly regenerates HP, but she stays on the screen at all times. Moving around the creep is difficult and you'll likely suffer a few points of damage, but it's not impossible to manage. More troubling is the constant spawning of Eternal creatures-- if you haven't met enough of them because you rushed the Womb, you might have difficulty handling their unique attack patterns. Check their individual pages to learn the strategies for dealing with them, and treat them as if you were fighting them in a Vomit Grimace room.

It's recommended to leave some easy monsters alive since Mom's Heart will not summon new minions until all minions in the room are dead.


  • The music of the fight has faint sounds of heartbeats.
  • If you listen closely, you can hear Isaac's mom groaning in the background. This is the same for It Lives.


  • When defeating Mom's Heart using the Bible, the health bar will not disappear, but the game will go on with the ending as usual and the chest will appear (seems to have only appeared since The Wrath of the Lamb was released)
  • If you are in the Womb XL or Utero XL, then the boss right before Mom's Heart/It Lives! will also play the heart's music, and Mom's Heart/It Lives! will still play her own music. This also occurs with Mom in The Depths XL and Necropolis XL.
  • If Mom's Heart or It Lives is taking multiple hits of damage right before she starts firing bombs, many occurrences of she saying "Isaac!" happen. An example of this is when Technology 2 is being used.
  • If you kill yourself after defeating Mom's heart, but have a respawn item (1up, Ankh, Guppy), when you return to the room, mom's heart will have returned, but the chest is still there. You must wait for the heart to rise back up before running into the chest. The game goes on normally after opening her
  • If Mom's Heart or It Lives is damaged enough to start firing bombs before she comes down from the roof (via The Candle), she will stay on the roof and her shadow will remain, but bombs will still be fired from the center of the room.
  • If Mom's Heart is dropped below 33% while she is raised (i.e., poison, Blue Candle bug, etc.), but there are still spawned monsters in the room, Mom's Heart will begin to fire bombs, but will not drop from the ceiling until the spawned monsters are killed.
  • Mom s Heart is female.
  • The boss could be represented as literally breaking Mom's Heart. This would explain Mom's Heart eventually becoming It Lives, as Mom worries more and more about Isaac, getting consumed thinking about him all the time & trying to control his life. The fully empty room in Mom's Heart endings shows Isaac's jump into chest from a different angle as well - he feels guilty for disappointing his Mother / He can't handle the worldview she's trying to force on him anymore, leading him to hide in the Chest from all worries. The endings with golden chests also show how when Isaac is alone in his room with lack of motherly love, something tends to always go badly.



Related Achievements[]

For the purposes of most achievements, Mom's Heart and It Lives are considered to be the same entity.
Halo "The Halo" - Kill Mom or Mom's Heart using The Bible.
Cross "The Cross" - Kill Mom's Heart with Maggy.
Bag "The Bag" - Kill Mom's Heart with Cain.
Robobaby "The Robo-Baby" - Kill Mom's Heart with Judas.
TheRazorBlade "The Razor Blade" - Kill Mom's Heart with Eve.
D6 "The D6" - Kill Mom's Heart with ???.
Blood Lust "Blood Lust" - Kill Mom's Heart with Samson.

Standard Bosses Dukeofflies fullThe Duke of FliesGemini fullGemini260x185-400px-Monstro.svgMonstroLarryjr fullLarry Jr.FistulaFistulaGurdy fullGurdyPeep FullPeepChubChubLoki fullLokiScolex fullScolexBlastocyst fullBlastocystTheFallen FullThe Fallen

Wrath of the Lamb DLC: 260x200-400px-Widow3WidowPin cleanPinMask of InfamyMask of InfamyGurdjrGurdy Jr.VS DaddyLonglegsDaddy Long Legs

Posthumous Bosses 285x230-MonstroII fullMonstro II

Wrath of the Lamb DLC: The HuskThe Husk260x220-The Hollow2The Hollow250x200-Teratoma.TeratomaLokii cutoutLokiiBlighted ovumBlighted OvumCarrionqueenThe Carrion QueenThe WretchedThe WretchedBc BloatThe Bloat

Alternate Bosses 287x265-Steven FullsizeStevenChub fullC.H.A.D.Gish fullGish

Wrath of the Lamb DLC: 200x300-400px-Triachnid boss portraitTriachnid

Harbingers 220x287-Isaac Vs famine edited- noobletkFamineBC PestilencePestilenceBC WarWarVSDeathDeath230x200-Headless HorsemanHeadless Horseman

Wrath of the Lamb DLC: BC ConquestConquest

Final Bosses 250x250-400px-MomMomMoms Heart FullMom's Heart250x250-ITLIVEScutoutIt LivesSatan FullSatan

Wrath of the Lamb DLC: Bc isaacIsaacBC xxx???