| CODE | |
| OPEN ALL SECRETS | I_WANT_IT_ALL |
| OPEN ALL LEVELS | SIGHTSEEING |
| OPEN ALL BIOS | INTERVIEW |
| OPEN ALL MOVIES | POPCORN |
| OPEN VARY HARD DIFFICULTY | NAILS |
| PLAY AS CLARK KENT | SECRET_IDENTITY |
| PLAY AS PARASITE | FEELING_DRAINED |
| INFINITE HEALTH | FIRST_AID |
| INFINITE SUPER-POWER | JUICED_UP |
| NO TIME LIMITS | STOP_THE_CLOCK |
| NO SUPER-POWER | JOR_EL |
| DIFFERENT PICK-UP ICONS | JUST_FOR_STEVE |
| EXPLORE METROPOLIS | WANDERER |
| EASY TEST OF STRENGTH | SORE_FINGER |
| SLOW MOTION | SLOW_MOTION |
| REVERSE CONTROLS | SUPERMAN |
| LOW RES MODE | PEA_SOUP |
| TOMATO SOUP MODE | TOMATO_SOUP |
| UNDERWATER MODE | FEATURE (&) WIBBLE |
| OLD MOVIE MODE | FEATURE (&) RETRO |
| REVERSE DISPLAYS | FEATURE (&) DOWN_UNDER |
| ICON HUNT & SHOOTING GALLERY | WANDERER (&) FEATURE (&) CREEP |
| ALTERNATE CREDITS | SGKEL341 |
