The Book of Sin
ItemRebirthLocked
activeGame ID 97★★★★
How do you unlock The Book of Sin?
In The Binding of Isaac, The Book of Sin is unlocked by unlocking The Book of Sin (Achievement).
Structured pathSource-backed requirements are mapped into trackable steps.
Spawns a random coin, heart, bomb, key, battery, pill or card near Isaac.
How to unlock: Defeat all 7 Deadly Sins
What unlocking The Book of Sin leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13