Mallet Mania 1.0

Mallet Mania is a game of logic and skill. The interface has been designed to resemble the popular Windows game Minesweeper, but the game itself is a brand-new concept.
The aim of the game is to flatten every grey square on the grid as fast as possible - the numbers tell you how many times each square needs to be hit before its flattened.
The problem is that the mallet you use to hit them with isnt a very precise instrument, and it will hit 4 squares (in a 2x2 block) at the same time. Whats more, hitting areas that are already flat would cause a dent and is not allowed, so completing the grid isnt as easy as it looks...
This game needs a quick eye and a fair amount of thought to win, but when youve got the knack, you can upload your best times to see how you rank against other players around the world!