- "Fun dungeon. You know, it's a play on words."
- ―King Candy
The Fungeon is King Candy's personal dungeon in his castle. It was prepared for Felix and especially for Vanellope (and other intruders) while he was ruling Sugar Rush. Both Vanellope and Felix end up thrown into the fungeon by King Candy and his lackeys.
- Felix has a sugary cell with pokey sticks for the bars and a strawberry bed.
- Vanellope's cell was a Glitch Proof Room that was covered with a circus themed moral and the sad clowns and animals saying quotes like "Some one's been naughty" and "Bad Girl". The cell also had "Glitch Proof Chains" to prevent Vanellope from glitching out of the Fungeon.