Teenage Mutant Ninja Turtles III: The Manhattan Project/Cheats

Teenage Mutant Ninja options
At the title screen, press. This must be done before attract mode starts. When activated, it opens a secret options menu which can change the difficulty, add more lives, and choose a starting level. There is also a sound test that includes most of the music from the game.

Auto Turtle select
At the turtle select screen, rapidly press and  until the words - Auto Mode - appear in upper right hand side. In this mode, the computer will automatically select the player's turtle at random.