Golf Paradise - Platform: Playstation 2

All golfers
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Press L2, R2, L2, R2, Up, Right, Down, Left, L1, L2 at the main menu. A
sound will confirm correct code entry. Note: Press L2, R2, L2, R2, Up, 
Right, Down, Left, L1, R1 in the Japanese version of the game.

Left-handed golfers
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Highlight a golfer, then hold L2 + Select and press X at the character
selection screen.

Alternate sounds
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Press L1, R1, L2, R2, L1, R1, L2, R2, L1, R1 at the main menu. A sound will
confirm correct code entry. Repeat the code to select various sound selections. 
Note: Press  L1, R1, L2, R2, L1, R1, L2, R2 in the Japanese version of the game.

Alternate ball (Japanese version)
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Press L2 + R1 + Triangle while the swing meter is on screen before hitting
the ball.  Press Left or Right to change the ball's shape.

Faster opponent turn
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Hold X while waiting for your turn. This should speed up both your opponent
hitting it, and the time it takes for the shot, significantly. You can also 
hold X after you shoot to speed up your shot's time to get there.

Stop caddie dialogue
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Press Start(2) to pause and immediately resume the game. This cuts off the
caddie's speech and they will not continue it after the game resumes.

Mulligan
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Use the following trick if you get into a bad situation and want to take the
shot over. Press Select and quit the game. You will be prompted to save. 
Answer "Yes" and you should return to the title screen.
Load your game and you will be teeing off at the hole you just quit from.

All Characters
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To unlock all Characters in Stroke Play press L2, R2, L2, R2, Up, Right,
Down, Left, L1, R1 at the main menu.