Kileak: The DNA Imperative Cheats for PlayStation
During the gameplay pause the game and press X, X, X, O, O, O, X, O, X, O, X, O and then un-pause the game.
All items (Japanese version):
Wait until the conception sequence begins during the title screen. Enter Circle(6), sweep the D-pad in a clockwise Full-Circle three times, and Enter Triangle, Square(2),Triangle, X, Start.
Invincibility (Japanese version):
Quickly Enter [Triangle(2), Left, Right, Square(2), Select, L1, L2, R1, R2] three times within five seconds at the title screen. The background color will turn blue to confirm correct code entry.