At the Select Stadium screen, enter these
key combos:
Up, down, right, up, down, left, up: Lets you play in a cornfield
Right, left, up, left, down, right, left: Lets you play in the mystery
stadium
During gameplay, hold down the 1 key
while doing one of the following
Hold 2 for a long fly ball.
Hold 3 for a line drive.
Hold 4 for a grounder.
Hold 5 for a pop-up.
Hold 6 for a bunt.
(e.g., hold 1 and 2 for a long fly ball)
Hold 7 with any of the above for a full-power hit.
(e.g., hold 1, 2, and 7 for a sure home run, 1, 6, and 7 for a monster
bunt, etc.)