Blastocyst
BossRebirthUnlock unknown
Encounter details
- Game ID
- 74
- Environment
- Boss / Womb / Utero / Scarred Womb / The Void / Boss Rush / Womb / Scarred Womb / The Void / boss challenge / Boss Rush / Degraded Boss / Small / Basement / Cellar / Burning Basement / Caves / Catacombs / Flooded Caves / Depths / Necropolis / Dank Depths / Womb / Utero / Scarred Womb / Medium / Womb / Utero / Scarred Womb / Chest / Dark Room / Large / Sheol / Chest / Dark Room
- Description
- Blastocyst is a boss that can appear:
How do you unlock Blastocyst?
Needs researchNo validated unlock requirement has been imported yet.
Blastocyst is a boss that can appear:
What unlocking Blastocyst leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13