The following are known GameShark Codes for Extreme Pinball on Sony Playstation (PS1).
These codes were also known as Action Replay Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

• Infinite Balls (Medieval Knights)
  80049EDC 0000
  8004C934 0000
• Infinite Balls (Monkey Mayhem)
  80055B3C 0000
  800583FC 0000
• Infinite Balls (Rock Fantasy)
  80046840 0000
  800490E8 0000
• Infinite Balls (Urban Chaos)
  80048368 0000
  8004B070 0000