Mario Golf is a game for the Nintendo 64 that was developed by Camelot, a games studio especially famous for making the Golden Sun series. Mario Golf was published by Nintendo and released in 1999 worldwide.
In the North American version of the game, there is a password screen, accessed while holding A+Z+R while having Clubhouse highlighted on the main menu. There are only 3 known passwords, 2 of which gain access to the Hyrule Cup, and the other unlocks a Special Tournament Mode.