| Play as Alien saucer | R1, Square, X, Square, L2, Circle |
| Play as Big Daddy | Triangle, Square, R2, X, Triangle, R2 |
| Play as Goliath | Triangle, L1, R1, X, L2, L2 |
| Play as Nightshade | R1, R2, L1, L1, X, Circle |
| Play as Helicopter | L1, Triangle, R2, Triangle, Triangle, R1 |
| Funtopia level | X, Circle, L2, X, Square, L1 |
| Gulch level | X, Square, Circle, L1, L2, Square |
| Boss Battle 1 | Circle, R2, R1, Square, L1, R2 |
| Boss Battle 2 | Circle, Circle, L2, L1, Triangle, Triangle |
| Boss Battle with Big Daddy | Square, Triangle, Circle, Circle, R2, R2 |
| Double pick-ups | L1, L2, Circle, L1, R1, Square |
| Increased armor | R1, Triangle, R1, Triangle, L1, Square |
| Infinite turbos | Square, X, Circle, Triangle, R1, R2 |
| Infinite jump | Circle, Square, R2, X, Triangle, R2 |
| View Duke Nukem FMV | Square, Square, Circle, Circle, Triangle, Triangle |
While playing, hold L1 + R1 + R2 and press Select. Then enter one of these codes.
