ALIEN RESSURECTION CHEATS

PSX

Cheat mode:
Press Circle, Left, Right, Circle, Up, R2 at the main menu. A "Cheat" selection will appear on the options screen, allowing God mode, all weapons and unlimited ammunition, unlimited oxygen, no chestbursting, and level selection.

Research mode:
Press Square, Up, Down, Circle, Left, R1 at the main menu. A "Research Mode" selection will appear on the options screen.