On the main menu enter PRPPAPLYR
On the main menu enter ATEMYBUIK (a Thomas Dolby reference, no less) as a cheat code and the phrase "Let the abductions begin" will confirm correct code entry. The Alienapolis stadium now will be available from the stadium selection screen and the Abductors team will be enabled for that stadium.
On the main menu enter BIGHELIUM
On the main menu enter GOTHELIUM
At the Kansas City Royals stadium, if you hit one of the two signs that say ''Win a Lizard?'', your team will turn into lizards.
Leave an open player lot for your team so it appears as 'Empty'. Select 'Home Run Derby', choose the 'Empty' slot and you'll get a player so small he is almost invisible. More time is needed for him to enter the batter's box before the pitcher can throw the ball.
At the cheat menu, enter PRPPAPLYR
At the cheat menu, enter GOTHELIUM
Change Players Weight
On the cheat nebu, enter ABBTNCSTLO
Baseball leaves a smoking trail
Pause the game, then hold Z and press B, C Left, C Up, C Right, C Down, B, A, C Left, C Left
Pause the game, then hold Z and press C Left, A, C Right, C Down, B, A, C Left, C Left
At the Title Screen press R, A, Z, R, C-Right, A, B
Players Are Paper-Thin
Pause the game, then hold Z and press C-up, C-right, A, C-right, A, C-down, C-down, C-up, C-up, C-down.
Players' heads, feet, hands and bats are big
Pause the game, then hold Z and press C Up, C Right, A, C Left, C Left, B, C Up, C Left, C Left
Some players are fat, others are thin
Pause the game, then hold Z and press C Left, C Left, C Right, C Up, B, C Right