Bonus teams
At the title screen, press C-Right, A, Down, Left.

Hidden message
At the title screen, press C-Up, R, B(2).

View credits
At the title screen, press R, A, Z, R, C-Right, A, B.

Cheat menu
At the pre-game menu, press L, R, L, R. Note: This code must be activated before the other pre-game menu cheats are enabled.

Devil's Thumb stadium
At the pre-game menu, press Right, A, C-Up, L, A.

Always hit home runs
At the pre-game menu, press L, A, Down, Right.

Super players
At the pre-game menu, press B, A, R, B, A, L(2).

Better throws by fielders
At the pre-game menu, press B, A, L, Down, Z.

Better plays by fielders
At the pre-game menu, press B, A, R, Down, L, B.

Faster fielders
At the pre-game menu, press R, A, Z, L, Down, A, Z, L.

Crazy ball
At the pre-game menu, press C-Right, A, Z, B, A, L(2).

Better pitches
At the pre-game menu, press B, L, A, B, R, Z.

Crazy pitches
At the pre-game menu, press C-Right, A, Z, C-Up, R, B.

Faster pitches
At the pre-game menu, press R, A, Z, L, Down.

Varied pitches
At the pre-game menu, press C-Right, A, Z, C-Up, R, L.

Easy steals
At the pre-game menu, press C-Left, A, Down, C-Up, Z.

Aluminum bats
At the pre-game menu, press R, A, Z, B, A, L(2).

Red bats
At the pre-game menu, press R, Down, B, A, Right.

Blue bats
At the pre-game menu, press B, L, B, A, Right.

Psychedelic bats
At the pre-game menu, press Z, B, R, A.

Low gravity
At the pre-game menu, press Up, R, A, L.

Increased gravity
At the pre-game menu, press Up, Down, L, Up, R.

Fast game
At the pre-game menu, press L, A, Z, R, B, A, L(2).

Slow game
At the pre-game menu, press Up, L(2), B, A, L(2).

Alternate sky
At the pre-game menu, press C-Right, A, Z, C-Up, L, R, Z.