Here are some cheats and tips for the game Frogger.
Cheat mode:
Intentionally run out of lives during game play. Then, press A, B, A,
B, Select, Start at the high score screen. A cheat option will now
appear on the main menu.
Stop traffic and turtles:
Press A, B(2), Left, Right, Up, B, A to stop traffic and keep the
turtles from sinking. A traffic light will appear to confirm correct
code entry.