At the title screen press and hold L and Z and enter A, A, X, X, X, X, Y, X while still holding those buttons.
All Knapsack and Flower pack items
At the title screen press and hold L and Z and enter A, A, Y, B, X, X, B, Y while still holding those buttons.
Easy coins
When Ben tells you to use the metal detector to locate the Gopher's coins, go to the barnyard. On the right side of the farmer's house you will see yellow flowers. Use the metal detector to find a group of coins. At night, go in and out of the party. Each time you use the metal detector on the side of the farmer's house you will get more coins.
Unlock all Antics
At the title screen press and hold L and Z and enter Y, X, A, B, B, A, X, Y while still holding those buttons.
Unlock all bonus items
At the title screen press and hold L and Z and enter Y, B, A, X, X, A, B, Y while still holding those buttons.