Tom and Jerry: Frantic Antics (Genesis)
CheatingDome.com
Options
When you are at the "Press Start" screen, press C.
Options Screen
At the title screen, press C and it will bring up an options screen to select difficulty, music.
Passwords
Level 4: Heart, Rock, Bell, Clock
Level 5: Tom, Heart, Bell, Clock
Level 7: __, Clock, Bell, Heart
Level 10: Tom, Heart, __, Bell