Dungeon Keys open entrances to their respective dungeons when used.
Note: Oryx’s Castle Key was added for testing purposes and is normally unobtainable.
Mystery Keys are special keys that open a random dungeon upon use. These keys are currently obtainable only in Mystery Boxes, the Alchemist, and in the Nexus shop.
The Ruby Mystery Key and the Diamond Mystery Key have not yet been released into the game. It is thought that Ruby and Diamond keys will open more valuable dungeons.