The following are known Action Replay Codes for R.B.I. Baseball 3 on SEGA Genesis / Mega Drive (Genesis).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay

• Strikes Modifier
  FF4C02:XX
• Outs Modifier
  FF41B2:XX
• Balls Modifier
  FF08AE:XX
  Note: This may jump around.
• Team 1 Score Modifier
  FF05F4:XX
• Team 2 Score Modifier
  FF05F5:XX