:: video games cheat and cheat codes ::                                            

Playstation - Roswell Conspiracies - Aliens Myths And Legends cheats

Unlock all levels and the cheat menu:
Hold L1 + L2 + R1 + R2 + R3 + Down buttons for 15 seconds 
at the main menu to get access to all levels. Pause the 
game play to get access to the cheat menu.

Roswell Conspiracies - Aliens Myths And Legends Game Shark Codes:

Unlimited Ammo Lv.1:
800961C0 2400

Unlimited Health Lv.1:
800EA55A 0064