If you were looking for something else, you're wrong.
A cheat code is something that gamers use to benefit themselves when they simply can't beat a game and/or they're probably playing something like Grand Theft Auto and not having cheats takes the fun out of playing a game.
Cheat codes are known for simply hitting a certain number of random codes, such as:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Y (the last y is weird!).