Enter the Gungeon Wiki

Not to be confused with the Gnawed Key used to open the way to the Resourceful Rat's Lair, or the Rat Key Pickup used to open Rat Chests.

Rat Key
Rat Key.png
Type: Quest
Ammonomicon Entry
What Could It Open?

The Rat Key is a quest item in Exit the Gungeon. It is purchased from the Resourceful Rat in the Shop.

How to Obtain[]

The Rat Key is purchased from the Resourceful Rat in the Shop for 50 or 115 Money.png.

The first Rat Key is given by the Resourceful Rat for free, however.


  • Allows the player to unlock an imprisoned NPC later in the run.


  • The Rat Key is highly similar in appearance and theme to the Gnawed Key, though it has a different name and quote.
  • The Rat Key also has an alternate pickup quote that reads "Freedom not free, apparently.".
  • Like all Quest Items, the Rat Key has an ammonomicon quote but no description.