Guaranteed Win
Enter "F1nLvJoNaAFA SqzQ3 AoDG6Wi3wFIKENIG9 " as your password to play the final tournament with twice as much cash as the nearest opponent. Even if you don't win the tournament, you'll win the game!

More Experienced Caddy
At the password screen, enter all F's in the top row and all 9's in the bottom row.

Secret Game
Putt 100 times on a hole to see a screen from Fantasy Zone when the game is over. Now press Up, Up, Down, Down, Left, Right, Left, Right, B, A. You can now play a limited game of Fantasy Zone until you reset the game.

Super Shot
Enter your name as "Eve" and you'll be able to hit the ball great distances.