Independence Day
Go to the 'Name Your Character' screen and enter one of these codes:

MR HAPPY  - All jets
FOX ROX  - Level Select
LIVE FREE  - Invincible
GODZILLA  - Kill wingman and civillians
GREG FM  - All cheats activatedDAB DAB  - All cheats activated
GO POSTAL  - Shoot faster, one hit kills, Infinite Missles
TOURIST  - Removes all Aliens, Activates Demo Camera, and No Time Limit 
After entering one of these codes, go to the main menu and enter Left, Right, Square, Circle, Triangle, Triangle, Down to get the cheat menu.

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In the Options menu, select the Normal Difficulty level without a memory card in the slot and Load game. Now enter any one of the following codes:


For Washington: DBKMO
For New York: GBKMX
For Paris: LLSMX
For Moscow: NL9MX
For Tokyo: R39NF
For Oahu: T59MX
For Las Vegas: Z99MZ
For Mothership: 399MH