The following are known Game Genie Codes for John Madden Football on Super Nintendo Entertainment System (SNES).

• Play Clock is 20 Seconds Instead Of 45
  F0A2-A4DD
• Play Clock is 30 Seconds
  F3A2-A4DD
• Play Clock is 60 Seconds
  7AA2-A4DD
  Note: This code is best suited for a 2-Player Game because when active the Computer Player will always run down the clock. This can cause delays in actually playing the game.
• Play Clock is 90 Seconds
  9CA2-A4DD
  Note: This code is best suited for a 2-Player Game because when active the Computer Player will always run down the clock. This can cause delays in actually playing the game.
• Only have 3 Plays To Get A First Down Or TD (Down Counter Starts At 2)
  D4A3-6D04
• Only have 2 Plays To Get A First Down Or TD (Down Counter Starts At 3)
  D7A3-6D04
• Only have 1 Play To Get A First Down Or TD (Down Counter Starts At 4)
  D0A3-6D04
• Have Infinite Plays To Get A First Down Or TD (Always 1st Down)
  C2AB-64A4
• Infinite Time-Outs
  3C24-A70D
• No Time-Outs Instead Of 3 (Player 1)
  DD69-A407
• 6 Time-Outs (Player 1)
  D169-A407
• 9 Time-Outs (Player 2)
  DB69-A407
• No Time-Outs (Player 2)
  DD69-A467
• 6 Time-Outs (Player 2)
  D169-A467
• 9 Time-Outs (Player 2)
  DB69-A467
• Safeties Worth 1 Point Instead Of 2
  82A6-AF64
• Safeties Worth Zero
  82A6-AF64
  82A6-A404
• Touchdowns Worth 0 Points Instead Of 6
  DDA4-0767
• Touchdowns Worth 1 Point
  DFA4-0767
• Touchdowns Worth 2 Points
  D4A4-0767
• Touchdowns Worth 3 Points
  D7A4-0767
• Touchdowns Worth 4 Points
  D0A4-0767
• Touchdowns Worth 5 Points
  D9A4-0767
• Touchdowns Worth 7 Points
  D5A4-0767
• Touchdowns Worth 8 Points
  D6A4-0767
• Touchdowns Worth 9 Points
  DBA4-0767
• Extra Points And Field Goals Worth Zero
  3CA7-A707
  3CA7-A767
• Extra Point Or Field Goal Resets Score To 0
  B3A7-A7A7
• Player 2 Starts With 3 Points
  CB6C-6D07
  626C-6FD7
  486C-6F07
  ED6C-6467
  D76C-6D67
• Player 2 Starts With 5 Points
  CB6C-6D07
  626C-6FD7
  486C-6F07
  ED6C-6467
• Player 2 Starts With 9 Points
  CB6C-6D07
  626C-6FD7
  486C-6F07
  ED6C-6467
  DB6C-6D67
• Player 2 Starts With 12 Points
  CB6C-6D07
  626C-6FD7
  486C-6F07
  ED6C-6467
  DA6C-6D67
• Player 2 Starts With 15 Points
  CB6C-6D07
  626C-6FD7
  486C-6F07
  ED6C-6467
  DE6C-6D67
• Player 2 Starts With 20 Points
  CB6C-6D07
  626C-6FD7
  486C-6F07
  ED6C-6467
  F06C-6D67
• Player 1 Starts With 3 Points
  CB6C-6D07
  626C-6FD7
  416C-6F07
  ED6C-6467
  D76C-6D67
• Player 1 Starts With 5 Points
  CB6C-6D07
  626C-6FD7
  416C-6F07
  ED6C-6467
• Player 1 Starts With 9 Points
  CB6C-6D07
  626C-6FD7
  416C-6F07
  ED6C-6467
  DB6C-6D67
• Player 1 Starts With 12 Points
  CB6C-6D07
  626C-6FD7
  416C-6F07
  ED6C-6467
  DA6C-6D67
• Player 1 Starts With 15 Points
  CB6C-6D07
  626C-6FD7
  416C-6F07
  ED6C-6467
  DE6C-6D67
• Player 1 Starts With 20 Points
  CB6C-6D07
  626C-6FD7
  416C-6F07
  ED6C-6467
  F06C-6D67