The following are known GameShark Codes for GunBarl 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 Japanese version of the game.

• P1 Infinite Life
  800BDA68 0005
• P2 Infinite Life
  800BDA6A 0005
• All Items
  80050002 0000
  80011E12 270F
• Infinite Time
  D00EEB76 F7FF
  800A92CC 0000