MLB Slugfest 20-04 Cheats (GameBoy Advance)

Press B, A, and R to enter the following codes on the match-up screen. The numbers in the
following list indicate the number of times each button is pressed. After the first part
of the code has been entered, press the D-pad in the indicated direction to enable it.
Example, to enter 1-2-3 Right, press B, A(2), R(3), Right. A message will appear to
confirm correct code entry. 

Effect Code 

All fielders run 1-3-2 Up 

Fireworks 1-4-1 Right 

1920 mode 2-4-2 Up 

Ghost fielders 3-1-3 Down 

Skull ball 3-2-3 Left 

Nuke ball 3-4-3 Up 

Backwards fielders 4-4-4 Right