The 'Castle' world was planned to be the final world in Banjo-Tooie, but was ultimately cut during development due to time constraints. Only a concept design and assets were produced, before the world was cut-down and re-purposed into Cauldron Keep. Unlike Cauldron Keep, this earlier incarnation was to feature 10 Jiggies, Mumbo along with several Mumbo Pads, and a single Jamjars hatch. The addition of this world to the nine already in the game (including Isle o' Hags) would've lead to a total of 100 Jiggies in Banjo-Tooie, matching the total amount of Jiggies found in its predecessor, Banjo-Kazooie.