Very good... and addictive
You managed to make a great and addictive game out of a very simple concept. The graphics are basic, but fit perfectly in the game and it's entire design, the concept is simple but very effective and the pase is good. You managed to add a nice little tune to it, but there is the only disadvantage as well: it gets dull after a while, since the song loops over and over. Luckily, you added an option to turn it off. Other options like quality and erasing all data result in a nice bonus.
Apart from that, maybe some people will find the size of the game - in comparison with the design and simplicity of the game - a bit too big.
And as a side note, you got me and a part of the family addicted. After grasping the concept, there was no way in stopping them.