If you click the "start button"
you'll see that one piece of the pie
starts to flash once...
The intension of the game is
to click the right color after it has flashed.
When you click the right color,
the first piece will flash again
and a second piece will be added.
So the second time you'll have to click the
first color again and the added one...
And so on...untill you win or loose.
If you get better you can select another
difficulty!