Teenage Mutant Ninja Turtles III: The Manhattan Project – Entering the code at the title screen with the A and B buttons reversed gives access to a stage select/option mode and is the only way to change the options in the game; otherwise, the player will start on normal difficulty with three spare lives.

• Random Turtle Select

On the Turtle Select Screen, press Down five times for a one-player game, or press Down 10 times for a two-player game. With this code, whenever you are defeated, the game will randomly select your next turtle. So, while you may start playing with Leo, after being defeated, you may continue with Don, Mike, or Raph.

• Secret Thank You Message from developers

On title screen press: Up, Up, Down, Down, Left, Right, Left, Right, A, B, Start. A message written in Kanji will appear for a few seconds onscreen.
Note: Only works in Japanese version.

• Stage Select and Options

On the screen where the title of the game and the choice for number of players appears, press Up, Up, Down, Down, Left, Right, Left, Right, A, B, Start on Controller 1. Then select your turtle, and you'll go to the Options screen. If you're playing a two-player game, press Select before Start.

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Strategy GuideAlternate 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.

Challenge mode

Successfully complete story mode with Raphael, Donatello, Michaelangelo, and Leonardo to unlock challenge mode.

Play as Casey Jones

Successfully complete level 1 with Raphael to unlock Casey Jones in versus mode.

Play as Evil Turtlebot

Successfully complete level 3 with Raphael, Donatello, Michaelangelo, or Leonardo to unlock the Evil Turtlebot in versus mode.

Play as Hun

Successfully complete level 6 with Michaelangelo to unlock Hun in versus mode.

Play as Oroku Saki

Defeat Saki with Raphael, Donatello, Michaelangelo, or Leonardo to unlock Oroku Saki in versus mode.

Play as Shredder

Defeat Shredder with Raphael, Donatello, Michaelangelo, or Leonardo to unlock Shredder in versus mode.

Play as Splinter

Successfully complete Dojo level 3 with Leonardo to unlock Splinter in versus mode.

Play as Yoshi Hamato

Tmnt Arcade Game Nes Cheats

Successfully complete challenge mode with Raphael, Donatello, Michaelangelo, or Leonardo to unlock Yoshi Hamato in versus mode.

Alternate costumes

Set the Xbox system date to December 25 to see the turtles with a Christmas theme. Set the Xbox system date to October 31 to see the turtles with a Halloween theme.

Secret of Gembu

Tmnt Nintendo Game Online

Successfully complete the third Dojo Stage with all four turtles to learn the Secret of Gembu move. Use it to damage everyone on the screen. Note: This can only be done three times per level.

Wrong voice

Tmnt Arcade Nes Rom

When you select Michaelangelo and pick up a recovery item such as pizza, etc., he will have Leonardo's voice instead of his original one.