Cheat mode
Note: There must be no saved files before starting this code. Go to the first file and name it "BEST". Name the second file "GAME". Name the third file "EVER". Go to "BEST" file. If done correctly, all cheats will be unlocked, you will be able to start at any level, and have all modes (including Arcade) available. Note: You can then erase the "Game" and "Ever" files.
Arcade mode
Enter "EDACRA" as a name. A sound will confirm correct code entry.
All alternate cars
Enter "G6155" as a name. A sound will confirm correct code entry. Alternate vehicles will be unlocked at the "Cheats" screen, which can be found at the "System Option" screen. Press [L] or [R] to cycle through the vehicles.
Super Agent mode
Enter "SUPERSPY" as a name. A sound will confirm correct code entry. Alternately, successfully complete the game with all Primary Objectives and Secondary Objectives.
Unlimited turbo
Successfully complete all primary objectives in Super Agent mode.
Unlimited stealth
Successfully complete all primary and secondary objectives in Super Agent mode.
Delete saved games
Press [Left]x2, [Right], [Left], [R]x2 at the copyright screen.
Delete high scores
Press [Up]x2, [Down], [L], [R], [L] at the copyright screen.
Chicken blood
Press [L] or [R] at the mission selection screen to switch to special agent mode. Start a game, then press [Start] to pause game play. Then, press [Left]x2, [Right]x3, [Left]x2, [A]. The sound of a chicken will confirm correct code entry. Resume the game, and chickens will turn into blood.