The following are known Game Genie Codes for Tecmo Bowl on Nintendo Game Boy.

• 054-D6B-F7A
  You have 5 downs instead of 4
• 494-D6B-F7A
  You have 49 downs instead of 4
• 084-EFB-E6E
  Each quarter is 8 minutes and 30 seconds
• 064-EFB-E6E
  Each quarter is 6 minutes and 30 second
• 014-EFB-E6E
  Each quarter is 1 minute and 30 seconds
• 00D-C9A-3BE
  Infinite time