PAUSE GAME, PRESS R1 9 TIMES, UP.
- TINY HEAD DUKE:
PAUSE GAME, PRESS R1 9 TIMES, DOWN.
- BIG HEAD ENEMY:
PAUSE GAME, PRESS R1 9 TIMES, LEFT.
- TINY HEAD ENEMY:
PAUSE GAME, PRESS R1, R1, R1, L1, L1, L1, R2, R2, R2, RIGHT.
- INVISIBLE:
PAUSE GAME, PRESS L1, R1, L1, R1, L1, R1, L1, R1, L1, R1.
- DOUBLE DAMAGE:
PAUSE GAME, PRESS L2, R2, L2, R2, L2, R2, L2, R2, L2, R2.
- TEMP INVINCIBLE:
PAUSE GAME, PRESS R1, L2, L1, L2, R1, L1, R1, L2, L1, L2.
- ALL WEAPONS:
PAUSE GAME, PRESS L1, L2, UP, L1, L2, DOWN, R1, RIGHT, R2, LEFT.
- SUPER WEAPONS:
PAUSE GAME, PRESS R1, R2, L2, L1, R1, R2, L2, L1, SELECT, SELECT.
- INFINITE AMMO:
PAUSE GAME, PRESS LEFT, RIGHT, LEFT, RIGHT, SELECT, LEFT, RIGHT, LEFT, RIGHT, SELECT.
- INVINCIBLE:
PAUSE GAME, PRESS L2, R1, L1, R2, UP, DOWN, UP, DOWN, SELECT, SELECT.
- ALL INVINTORY:
PAUSE GAME, PRESS R1 5 TIMES, L2 5 TIMES.
- ALL KEYS:
PAUSE GAME, PRESS UP, RIGHT, UP, LEFT, DOWN, UP, RIGHT, LEFT, RIGHT, DOWN.
- 99 CONTINUES:
PAUSE GAME, PRESS LEFT, RIGHT, UP, LEFT, RIGHT, DOWN, LEFT, RIGHT, L1, R1.
- LEVEL SELECT:
PAUSE GAME, PRESS DOWN 9 TIMES, UP, NOW RETURN TO TITLE.
- PLAY INTRO FMV:
PAUSE GAME, PRESS SELECT, UP 9 TIMES, SELECT, L1, EXIT GAME.
- PLAY VICTORY FMV:
PAUSE GAME, PRESS SELECT, UP 9 TIMES, SELECT, L2, EXIT GAME.
- PLAY END CREDITS:
PAUSE GAME, PRESS SELECT, UP 9 TIMES, SELECT, R1, EXIT GAME.
- DUKE MOONING FMV:
PAUSE GAME, PRESS SELECT, UP 9 TIMES, SELECT, R2, EXIT GAME.
- ROGUE TRIP MOVIE:
AT GT LOGO, PRESS L1+L2+R1+R2.
- SECRET LEVELS: (GAMESHARK)
ENTER A GAME SHARK CODE, SHUT OFF THE SHARK BEFORE THE MAIN MENU APPEARS, START A NEW GAME AND PAUSE, TURN THE SHARK ON, THEN RESTART THE LEVEL.
LEVEL XXX 1......800BE570 0004
LEVEL XXX 2......800BE570 000D
ANIMATION LEVEL..800BE570 000E