Other nice game that I have found: the game Ninja with the form of the hand to five fingers but contained in a fist, and that it means: To possess the practice and the speed only with the mouse.
And you have to be fast with the seconds and with the mouse to beat max 21 levels of brief duration each.
They are all different levels, and you have to make the practice against the fast seconds that pass.
I have done after so much practice to score max (good score with the thumb lifted by the fist) of 543 and after 19 levels (I have lost only 2 levels).
It's indeed amusing!! And then you see the fingers of the closed fist when you make your scores.
http://www.digyourowngrave.com/ninja-glove/