The following are known CodeBreaker / GameShark Codes for Backyard Soccer on Sony Playstation (PS1).

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

Device Compatibility: Action Replay, CodeBreaker & GameShark

• Home Team Score Modifier
  300BD428 00??
• Away Team Score Modifier
  300BDA84 00??
• Home Team Special Modifier
  300BD442 00FF
  300BD43E 00??
• Away Team Special Modifier
  300BDA9E 00FF
  300BDA9A 00??

Special Modifiers

• 01: Twister
• 02: Underground
• 03: Bowling Ball
• 04: Cannonball
• Goals Score Modifier
  800540F4 00??