you guys don't know the difference? if you check the back of the PS2 versions box it says, if you complete it on the GC you only unlock a gun and new suit, on PS2 you unlock a new story, which is Ada's side of the story and a new mini mission called assignment ada and you unlock a mini game called the mercanarys and can unlock the hand cannon, mafia suit, new york typewriter (a gun, not a type writer). so really there IS alot more diffrence between them if you finish the game.