In-game reset:
Press A + B + Start + Select to reset the game. Note: If this is done while a bad shot is in flight, you may continue from the saved game file to replay the shot.

Control logo:
Press the D-pad on the "Press Start" screen to move the Mario Golf logo.

Peach's Castle course:
Defeat all four champions in a match game and finish in first place in all four courses.

Play as Wario:
Finish first in the club tournaments and defeat all of the club masters.

Play as Putts:
Select a custom character, and select Putts as an opponent. Defeat him at any club to unlock him as a playable character.

Play as Tiny:
Defeat Tiny in a match game to unlock him as a playable character.

Play as Grace:
Defeat Grace in a match game to unlock her as a playable character.

Play as Gene Yuss:
Defeat Gene Yuss in a match game to unlock him as a playable character.

Left-handed golfer:
Hold Select and press A to choose a character.

Hint: Hidden hoodlum in Tiny-Tots course:
In the Tiny-Tots course, one of the kids responsible for leaving golf balls scattered around is hiding at the northern most accessible area in the course.

Hint: Hidden man in Raven Wood course:
Check along the left side of the Raven Wood course. You will find a man that says that he is on your side.

Hint: Hidden man in Palm Club course:
There is man hidden in woods on the far side of the practice putting green at the Palm Club course. Note: 300 points will be awarded after three hidden characters are found.