This is a clone of the classic electronic game, Simon. There are four coloured buttons, each with a unique tone. The game involves reproducing the correct order of button presses: first the game plays three buttons, which you must also press in the same sequence. It then plays the same three buttons followed by a fourth; again you copy the sequence. This repeats, with one new button being added to the sequence each turn, and the time you have to repeat the sequence diminishing. The longer you last, the higher your score.