Alternate Skies
Enter L, R, L, R at "Today's Game Screen."
Now enter C-Right, A, Z, C-Up, L, R, Z for alternate skies

  Aluminum Bats
Go to the "Today's Game Screen" and enter L, R, L, R. Then: R, A, Z, B, A, L, L for Aluminum Bats.

  Colorful Bats
Go to the "Today's Game Screen" and enter L, R, L, R. Then:
R, down, B, A, right for red bats
B, L, B, A, right for blue bats

  Crazy Ball

Crazy Ball: Go to the "Today's Game Screen" and enter L, R, L, R. Now do this: C-Right, A, Z, B, A, L, L.
  Crazy Pitch
Go to the "Today's Game Screen" and enter L, R, L, R. Now do this: C-Right, A, Z, C-Up, R, B for Crazy Pitch.

  Credits
Enter the following code at the titles screen to enable a credits option: R, A, Z, R, C-Right, A, B.  

Devil's Thumb Stadium
Go to the "Today's Game Screen" and enter L, R, L, R. Now do this: To get the Devil's Thumb Stadium, press right (D-Pad), A, C-Up, L, A.

  Easy Homeruns
Go to the "Today's Game Screen" and enter L, R, L, R. Now do this: Press L, A, down (D-Pad), R to always hit a homerun.

  Easy Steals Go to the "Today's Game Screen" and enter L, R, L, R. Then: C-Left, A, down, (D-Pad) C-Up, Z for easy steals.

  Game Speed
Enter L, R, L, R at "Today's Game Screen." Now enter L, A, Z, R, B, A, L, L for fast games or up, L, L, B, A, L, L for slow games.

  Gravity Options
Enter L, R, L, R at "Today's Game Screen." Now enter up, R, A, L for low gravity or: up, down, L, up, R for increased gravity.

  Hidden Messages
At the title screen (the one with Piazza's picture), enter: C-Up, R, B, B for hidden messages.

  Psycho Bats
Go to the "Today's Game Screen" and enter L, R, L, R. Then: Z, B, R, A for Psycho Bats.

  Varied Pitches
Go to the "Today's Game Screen" and enter L, R, L, R. Now do this: C-Right, A, Z, C-Up, R, L for varied pitches.