Rotten Penny is an unlockable trinket in The Binding of Isaac, added in the Afterbirth+ DLC.
Spawns a Blue Fly every time a coin is picked up.
This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this trinket for the previous Repentance version, check this page instead.
Have 20 Blue Flies at the same time.
Rotten Penny can be found in the following item pools:
Name | Weight |
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The following special synergies and interactions for Rotten Penny have been documented.
Mod | Item | Synergy |
---|---|---|
--- | Trinket multipliers | +1 Blue Fly per multiplier. |
* Note that not all possible synergies and interactions are listed here.
Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.