Hidden in Alien Resurrection is a Cheat Menu that when accessed will allow you to turn on infinite ammo, infinite health, no chest bursting and no drowning. There's also a level select that will let you play any level in the game, even the final stage. To make the Cheat Mode appear enter the Options screen from the Main Menu and while on the Options screen press CIRCLE, LEFT, RIGHT, CIRCLE, UP, R2. The Cheat Menu will appear at the bottom of the Options screen when you enter the code right. Select the new Cheat Menu to turn on all the goodies.
Research Mode
What is Research Mode? Research Mode is an interesting option that you can turn on that allows you to change the appearance of the aliens in the game. To open the mode go to the Options screen from the Main Menu and enter SQUARE, UP, DOWN, CIRCLE, LEFT, R1. If you did it right there will be a new selection on the Options Menu called Research. When you enter the Research option you will find a sixteen square grid. By lighting different combinations of squares in the grid you can change the appearance of the aliens in the game in some strange ways. Your going to have to goof around a bit, lighting different combinations of squares to get an idea of how you can change things but for the most part you can turn aliens transparent green, transparent yellow, make them really small (cat size), make them medium sized (dog sized) and even make them huge. It will take some experimenting to discover all the different types of combinations but the Research option can also be accessed from the in game pause menu so you can change an alien's look as it's attacking you.
