0 - The Fool
CardRebirthUnlocked
How do you unlock 0 - The Fool?
Verified starting unlockSource data confirms that no unlock is required.
Teleports Isaac to the starting room of the current floor.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking 0 - The Fool leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13