The following are known GameShark Codes for Gunfighter: The Legend of Jesse James on Sony Playstation (PS1).

These codes were also known as Action Replay Codes outside the U.S. and later in the U.S. and are compatible with both devices.

• Infinite Time
  8007D14E 003B
  8007D14A 003B
• Infinite Health (All Levels)
  8009840A 2400
• Never Reload (All Levels)
  800982D6 2400
• Infinite Bullets (Target Take Down)
  80184CD4 0063
• Infinite Bullets (Rolling Rampage)
  80184914 0063

Saloon Codes

• Infinite Health
  800E6CC4 0005
• Never Reload
  800E6CC8 0006

Train Codes

• Infinite Health
  800EE8B4 0005
• Never Reload
  800EE8B8 0006

Town Codes

• Infinite Health
  800B23D4 0005
• Never Reload
  800B23D8 0006

Mine Codes

• Infinite Health
  80117FA4 0005
• Never Reload
  80117FA8 0006

Hanging Codes

• Infinite Health
  800B84C4 0005
• Never Reload
  800B84C8 0006