Ken Griffey Junior Slugfest

The following codes can be unlocked through the create a player mode in the game.  The first name is always code the last name is the name of the cheat.
For example,  first name: code, last name: liddleleague.

LIDDLELEAGUE   small players
WEEBLEMEN      fat players
CPUVSCPU       computer vs. computer
INVISIBLE      invisible players
PHATTBATT      Bigger Bat
BIGGHEDZ       Bigger Heads
TOOTPICK       Skinny Body
BIGFOOT        long feet

When batting with griffey (only in arcade batting mode) pause the game and on the control pad press left, left, right, right, right, left, left.  If you make contact with the ball (besides bunting) it will go over the left field fence.

FIREWORKS
Go to the "EXHIBITION" mode.  At the stadium select screen, choose a stadium and view it by pressing "Z".  while in the stadium press "Z" and "R" at the same time.  there will be a display of fireworks.