Alternate movement sound effects
At the title screen, press Up(2), Down(2), Left, Right, Left, Right, X, A. If you entered the code correctly, the word ''Yeah'' will appear. Movement sounds in story mode will now be different.

Alternate Donatello costume
Enter Splinter, Raphael, Splinter, Michaelangelo, Michaelangelo as a password. Hold L or R when selecting Donatello at the character selection screen.

Donatello has larger bandanna and double attack power
Enter Donatello, Raphael, Leonardo, Donatello, Splinter as a password.

Donatello has smaller bandanna and double defense power
Enter Splinter, Splinter, Splinter, Michaelangelo, Raphael as a password.

Donatello flashes red and has attack power-up
Enter Donatello, Michaelangelo, Donatello, Raphael, Splinter as a password.

Alternate Leonardo costume
Enter Raphael, Michaelangelo, Michaelangelo, Leonardo, Leonardo as a password. Hold L or R when selecting Leonardo at the character selection screen.

Leonardo has larger bandanna and double attack power
Enter Leonardo, Michaelangelo, Leonardo, Splinter, Donatello as a password.

Leonardo has smaller bandanna and double defense power
Enter Michaelangelo, Raphael, Leonardo, Leonardo, Michaelangelo as a password.

Leonardo flashes red and has attack power-up
Enter Leonardo, Splinter, Leonardo, Splinter, Raphael as a password.

Leonardo has infinite normal shurikens
Enter Splinter, Michaelangelo, Raphael, Donatello, Michaelangelo as a password.

Alternate Michaelangelo costume
Enter Raphael, Raphael, Leonardo, Michaelangelo, Donatello as a password. Hold L or R when selecting Michaelangelo at the character selection screen.

Michaelangelo has larger bandanna and double attack power
Enter Splinter, Michaelangelo, Raphael, Donatello, Leonardo as a password.

Michaelangelo has smaller bandanna and double defense power
Enter Michaelangelo, Raphael, Raphael, Michaelangelo, Leonardo as a password.

Michaelangelo flashes red and has attack power-up
Enter Michaelangelo, Michaelangelo, Splinter, Leonardo, Raphael as a password.

Michaelangelo has infinite fire shurikens and pizza always appears
Enter Donatello, Raphael, Donatello, Splinter, Splinter as a password.

Michelangelo has improved weapon
Enter Michaelangelo, Splinter, Raphael, Michaelangelo, Michaelangelo as a password.

Alternate Raphael costume
Enter Leonardo, Michaelangelo, Splinter, Donatello, Donatello as a password. Hold L or R when selecting Raphael at the character selection screen.

Raphael has larger bandanna and double attack power
Enter Raphael, Donatello, Splinter, Raphael, Leonardo as a password.

Raphael has smaller bandanna and double defense power
Enter Leonardo, Raphael, Michaelangelo, Donatello, Splinter as a password.

Raphael flashes red and has attack power-up
Enter Splinter, Leonardo, Donatello, Splinter, Michaelangelo or Michaelangelo, Splinter, Leonardo, Leonardo, Raphael as a password.

Play as Master Splinter
Enter Michaelangelo, Splinter, Raphael, Leonardo, Splinter or Splinter, Leonardo, Donatello, Splinter, Michaelangelo as a password to unlock Master Splinter in story mode. Note: You must first complete story mode game as all four turtles.

Alternate hit sound effects
Enter Splinter, Michaelangelo, Michaelangelo, Raphael, Splinter as a password.

Playmates toy database
Enter Leonardo, Splinter, Donatello, Raphael, Michaelangelo as a password.