Binding of Isaac: Rebirth Wiki

Flat Penny is a trinket.

Effect[ | ]

  • Gives a chance of spawning a KeyKey upon collecting any coin.
    • (except in Repentance) 50% chance.
    • (in Repentance) The chance is based on the coin's worth:[1]
Coin Chance
PennyPenny 25.00%
Double PennyDouble Penny 43.75%
NickelNickel 76.27%
DimeDime 94.37%

Synergies[ | ]

  • Collectible Humbleing Bundle iconHumbleing Bundle: All KeyKeys spawned by the trinket get a 50% chance to turn into Key RingKey Rings.
  • Character Tainted Keeper iconTainted Keeper: The trinket works with the temporary coins spawned from defeating enemies, effectively turning it into an infinite KeyKeys generator.

Notes[ | ]

In-game Footage[ | ]

References[ | ]

  1. The chance is calculated as 1-0.75(coin_worth)