Flat Penny
TrinketRebirthUnlocked
How do you unlock Flat Penny?
Verified starting unlockSource data confirms that no unlock is required.
Gives a chance to drop a Key when a coin is collected.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Flat Penny leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13