A rather difficult puzzlegame. The object is to get rid of all the empty spaces (= zeros or 0's ). In the beginning of the game you choose the maximum number that may be reached. Once the game has started, you can change the number you want to place on the board by clicking on the number in the next square (top left). Every time a number is placed on the board, all the other numbers on the board decrease one point (-1). When a number reaches 0, it explodes. With this explosion, all 6 numbers around will increase by one (+1). You have to make sure that 10 isn't reached on the board or your game will be over.
CLick on help for more information.