As soon as the game starts a button will be highlighted. Press that button and a second one gets added to the sequenze. Every time you press all highlighted buttons in the correct order another button is added until you click on the wrong button or the time is up. You can also get 3 bonusses which make your life easier. One bonus lets the game continue when you clicked the wrong button, another one resets the timer and the third one will display the whole button order again.
The game features 4 different modes, 4 difficulty levels and 3 speed levels. There are also 2 different layouts available.