At the main menu, press Select to display the memory card screen. Press Select again to display the password screen, then enter one of the following case-sensitive codes:
| Code | What It Does |
| STEROIDS | Quickly perform special moves |
| CRUNCH.TIME | Massive hits |
| MAYHEM | Players tackled are injured |
| BIG.BOYS | Huge linebackers and linemen |
| SKELETON | Play skeleton teams in the Bone Bowl |
| URNOTREDE | Very difficult computer in one player game |
| JUICE | Press X while running for speed burst |
| PICK.CITY | Easy interceptions |
| CANNON.ARM | Quarterbacks throws bullet passes |
| STICKUM | No fumbles |
| OFFENSE | Better offense |
| DEFENSE | Better defense |
| EEGGCODE13 | Unknown effect |
| EEGGCODE14 | Unknown effect |
| EEGGCODE15 | Unknown effect |
| Infinite Time Outs P1 | 800AFFFA 0003 |
| P1 Score Modifier | 800AFE56 00?? |
| Infinite Time Outs P2 | 800AFFF8 0003 |
| P2 Score Modifier | 800AFE56 0000 800AFFF0 00?? |
| Infinite Time to Choose Your Play | 800B00CE 0027 |
| Computer Always Throws Incomplete Passes | 800B0170 0020 |