Similar to its predecessor Banjo-Kazooie, the game features three-dimensional worlds containing items to be collected. Among the items are golden jigsaw pieces ("Jiggies") that are used to complete jigsaw puzzles that unlock the levels. Instead of exploring the hub world in search of incomplete puzzle boards as in Banjo-Kazooie, a singular board is used within a temple where Jiggywiggy resides. Whenever the player has obtained the number of Jiggies required, a timed puzzle-completion challenge can be played, after which Jiggywiggy grants access to each world. Each puzzle challenge requires more Jiggies than the last. Musical notes return in Banjo-Tooie, but are used to learn new moves from the drill sargeant Jamjars. He is the brother of Bottles and takes over Bottle's role from the first game. Mumbo Jumbo also returns as a playable character that can venture out into each world and use specific magic spells to help Banjo and Kazooie proceed. Replacing Mumbo's previous role of transforming the duo into different forms is Humba Wumba, a medicine woman and Mumbo's rival.