Here are some cheats and tips for the game Teenage Mutant Ninja Turtles 4: Turtles
In Time.
Level select:
Press Up(2), Down(2), Left, Right,
Left, Right, L, R on controller two
at the title screen.
Ten lives:
Highlight the “Option” selection on the title screen.
Quickly press Up(2), Down(2), Left, Right,
Left, Right, B, A on controller two,
then Start on controller one. The “Rest” option
on the options screen may now be set to ten.
One player extra continues:
Press Start on controller two just before losing with
no continues remaining. Game play may be continued as player two
with the continue total reset to full.
Alternate music:
Enter sound test mode from the option screen. Set the sound
test to the “Staff” selection and press B, Y.