Click on one of the buttons in the playing field to subtract 1 from that button's value as well as from the values of the 4 surrounding ones. In this game subtracting one from nought results in 3. The objective is to set all buttons to 0.
For example a click on the 2 in the middle:
|will change the values on the buttons to:||
As soon as you click on "New", a new game starts. The score starts counting down from 1000. The quicker you finish, the higher your score will be. "Undo" and "Hint" as well as using more clicks than the current difficulty setting requires will all make you lose points.
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