The following are known Game Genie Codes for Tom and Jerry: Frantic Antics! on SEGA Genesis.

• Starts Each Life With Much More Energy
  9S2T-YAFA
  Note: You will get the energy after you get your first fish.
• Infinite Time
  AMDT-YA3W
  Note: You may need to turn this off at times.
• Keep Your Fish If You Die
  AMAA-YA66
• Tom is Sleepy And Jerry is Mad
  A1NA-YANC
• Timeout
  2DCT-YALA
• Invincibility
  DH1T-YASC