In this game, a target number will appear.
Your aim is to replicate that number by using the four numbered buttons of the values 1, 10, 100 and 1000.
If you overclicked a button, you can correct it by using the "Minus" button next to it.
With every success you will be given a short fireworks show, which will get more impressive as you progress through the game.
Note that the numbered buttons will change their location from one trial to another.