Unlock All Parks ... In any park input SQUARE, CIRCLE, TRIANGLE, SQUARE, CIRCLE, TRIANGLE, SQUARE.
Unlock All Rides ... In any park input SQUARE, CIRCLE, TRIANGLE, SQUARE, CIRCLE, TRIANGLE, TRIANGLE.
Add $50,000 ... In any park input SQUARE, CIRCLE, TRIANGLE, SQUARE, CIRCLE, TRIANGLE, CROSS.
Mission Skip ... In any park input SQUARE, CIRCLE, TRIANGLE, SQUARE, CIRCLE, TRIANGLE, CIRCLE. If there is a sparkling sound, you have a version of the game with the code, otherwise, the code is defunct on your copy. Go to the mission screen and press SQUARE on it to instantly earn progressive levels of medals. If you want to remove the medal, press CIRCLE instead.