In the game Banjo-Kazooie (1998), there is a secret cheat code room in which players can enter cheat codes to either activate fun easter eggs or gain progress instantly. This is a
EVERY Cheat Code in Banjo-Kazooie (Big Heads, Washing Machines, Stop 'n' Swap, & More!) - YouTube
How to play Banjo Kazooie at 60FPS | kowskirz
Cheato - Banjo-Kazooie Wiki - Neoseeker
Banjo-Kazooie Cheat Codes for Infinite Items, More Health, and Opening Levels and Doors (Bonus 2) - YouTube
Cheato | Banjo-Kazooie Wiki | Fandom
In Banjo Kazooie, Gruntilda will rhyme everything. Even something as obscure as entering an illegal cheat code that took years for people to learn about. : r/GamingDetails