Alien Resurrection (PSX) Cheats
Alien Resurrection cheats, and Codes for PSX. Also see Action Replay Codes for more Alien Resurrection cheat codes.
From the Main Menu, press circle, left, right, circle, up, R2. This will unlock the Cheat selection on the options screen.
From the Main Menu, press square, up, down, circle, left, R1. This will unlock the Research Mode selection on the options screen.