The following are known GameShark Codes for Madden NFL 2004 on Sony Playstation (PS1).

• Reverse Joker Command
  D006B306 ????
• Always 1st Down
  8006BCE4 0001
• Always 4th Down
  8006BCE4 0004
• Infinite Play Time
  D006B306 0001
  8006BCEE 001E
  Note: Press Select to Turn Off
• Home Team Score Modifier
  8006F3D4 00??
• Home Team Start With Score Modifier
  D006F3D4 0000
  8006F3D4 00??
• Home Team Infinite Time-Outs
  8006F3D6 0003
• Home Team No Time-Outs
  8006F3D6 0000
• Away Team Score Modifier
  800714B4 00??
• Away Team Start With Score Modifier
  D00714B4 0000
  800714B4 00??
• Away Team Infinite Time-Outs
  800714B6 0003
• Away Team No Time-Outs
  800714B6 0000