Press Pause, Option, 6, 1 + 3, then release those buttons. Then, press B, A, 9, A, 9, A, *, Option, 6, #, *, *, Option, 2, Option. The Predator will laugh to confirm correct code entry. In addition to the "Hold that Fuji!" codes, the following codes may also be activated.
Level select
Press Option + A to jump to the next level or Option + B to play the previous level.
God mode
Press Option + 5 for invincibility and full weapons.
Hold Pause + Option and keep them pressed during the entire code. Press 1+ 3. Then, press 2 + 5 + 7 + 9. The Predator will laugh to confirm correct code entry. The following codes may now be activated.
Security clearance
Press Option + 6 to raise or Option + 9 to lower.
Hold Pause and press Option, 1 + 3, Option. The sound of the shotgun will confirm correct code entry. The following information will appear: dec(xx,yy) x/y coordinates, hex(nnnn,nnnn) precise hexadecimal coordinates, and 1(nn) level number.
Freeze Alien Queen
Save the game just outside the Queen's Lair. Load the saved game. The Queen may now be damaged. She may be killed after walking through the entrance to unfreeze her.
View quick Alien ending
Enable the "Banana Stops" cheat mode. Create a cocoon and allow the alien to be killed after it matures. Press Option + A or Option + B as the cocoon is hatching to view the ending.