Book of Secrets
ItemRebirthLocked
activeGame ID 287★★★★
How do you unlock Book of Secrets?
In The Binding of Isaac, Book of Secrets is unlocked by earning the Satan completion mark as Eden (Character).
Structured pathSource-backed requirements are mapped into trackable steps.
Gives the effect of Treasure Map, The Compass, or Blue Map for the duration of the current floor. [Repentance] If all effects are active, X-Ray Vision is provided for the floor instead. Highlights any Tinted Rocks and rocks with Crawl Space in the room.
What unlocking Book of Secrets leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13