Original type of defense game. :o
At first, I had no idea what the point of reaching the 12 o'clock point was for, since the "Dong" sound that it made didn't knock off ALL the ninjas on the tower, and then when I was at 2000, I realized that the ninjas were getting on the hand as well, slowing it down and what not.
Pretty fun game, although kind of short. Reached 3500 before I keeled over and died do to the immense amount of ninjas on the hand.
But like most have said, the high pitched screams are just a little something to work on.