The Cyan Mystery Egg is a secret egg obtained for Stop 'n' Swop in Banjo-Kazooie after entering the special cheat code. It is one of the two eggs located in Mad Monster Mansion. It can be found in the cellar. Hint: 'X' marks the spot! In Banjo-Kazooie (Xbox Live Arcade), no cheat code is necessary to access the barrel in the cellar of Mad Monster Mansion, although it still has no effect in the game. In Banjo-Kazooie: Nuts and Bolts, if the player has collected the egg, a crate will appear on a rooftop in the theatre district. It contains Mole-on-a-Pole.