Penny That Doubles In Size Every Day is a pickup in Fiend Folio: RELOADED, a mod for The Binding of Isaac.
+1¢.
Behaves like a and cannot be distinguished from a regular
Penny, but its size doubles every day.
This takes into consideration real-life time duration, meaning closing the game and returning the next day can cause the coin to grow.
Can grow up to a total of 16 real-life days.
Has a 0.1% chance of replacing any random coin pickup. This chance is applied only after all other modded coin replacements have failed.