Mom

BossRebirthUnlock unknown

Encounter details

Game ID: 45
Environment: Boss / Main path / Depths / Necropolis / Dank Depths / Alternate path / Mausoleum / Gehenna
Description: Mom is the boss that appears on the second floor of Chapter 3 (Depths, Necropolis, Dank Depths). She is the initial final boss of the game, and defeating her for the first time unlocks both the Epilogue ending and Chapter 4 (Womb).

How do you unlock Mom?

Needs researchNo validated unlock requirement has been imported yet.

Mom is the boss that appears on the second floor of Chapter 3 (Depths, Necropolis, Dank Depths). She is the initial final boss of the game, and defeating her for the first time unlocks both the Epilogue ending and Chapter 4 (Womb).

This path has not yet been revealed

This requirement hasn't been imported yet.

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What unlocking Mom leads to

The Womb
The Harbingers
A Cube of Meat
Purist
XXXXXXXXL
SPEED!
Have a Heart
PRIDE DAY!
The Guardian
Aprils fool
Item Descriptions

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13