Here is an example of a cheat pattern, "Up, Down, Left, Left, X, Y, Y". They are not as common as they were in the 90s as children seem to have got lazier and have demanded codes. However in my childhood cheat patterns were almost as fun as the real game. They require accurate and precise input to be successful. It is also common for the user to have to complete the sequence within a time limit, else they will not get the benefit.