chronoshift
triangle,circle,circle,square,square,x

clear screen
square,triangle,circle,x,circle,triangle,square

ore into humans
x,circle,triangle,triangle,circle,x from a fellow cheat master

Announcer speak Japanese
Enter in GODZILLA at the password screen to have all you units in the

Instant Ion cannon:
pause the game and press, right down left left down right right down left x square triangle.

Instant air strike:
pause the game and press, right down left left down right right down left x square circle

Instant nuke:
pause the game and press, right down left left down right right down left x up x

$5,000:
pause the game and press, right down down left L1 left right down left

all map:
pause the game and press circle circle circle up circle square R1 circle circle circle

secret level:
ennter PATSUX as a password you will start out with 12 commandos and $10,000

NOD:
Level 2.C99FAXKW8
Level 3.KDT7OXZ7W
Level 4.C9JM6RH3X
Level 5.W15DASRS8
Level 6.Y47ZW9E0L
Level 7.C9R67C70W
Level 8.OX3CSXKE5
Level 9.56HE53HEH
Level 10.YNF75TZKO
Level 11.GTJ26Z12A
Level 12.CR0TDBC71
Level 13.MFYFV9DWX

GDI:
Level 5: AS6A7AN1D
Level 6: 0X3CS3D4G
Level 7: YLXGJXLE1
Level 8: V264NYUE6
Level 9: NX7QG348E
Level 10: OXBBAIRY4
Level 11: B9JUO38ES
Level 12: 14AKNXOB0
Level 13:TWNSCSKQ4

Covert Ops:
COVERTOPS in the password screen.