Codes

A Codes may be typed at any time while the game is running to toggle the effects on and off. The effect is applied after the last letter is typed there is no need to press Enter. Codes can be disabled at any time by typing the code again.

In the Xbox Live Arcade version, however you have to hit LB, RB, LT, RT to bring up a menu that will say Enter cheat code. All of the original codes may be entered here, and will work.

There do not appear to be any codes within the Nintendo DS version of the game.

List of Codes

Trivia

 * Some players believe that there are additional codes, tohot and slowboke, which give the player 9990 sun and slow zombies down, respectively. However, these codes do not actually exist in game, unless they are added by using a cheat engine or modifying the game program.
 * Only regular Zombie, Conehead Zombie, Zombie, Buckethead Zombie, Screen Door Zombie and Ducky Tube Zombie can be affected by future and mustache.
 * Only Zombie, Conehead Zombie, Buckethead Zombie and Ducky Tube Zombie are affected by the dance code.
 * The dance code also makes Zombies faster, so it is somewhat better to use it during I Zombie levels so they can walk and eat the plants faster than usual.
 * The music when dance is activated is same when the Dancing Zombie summons his Backup Dancer.
 * Typing mustache can get you an Achievement, depending on the game version.