Shake-Phone will test your hand speed.This is a very simple game, you can easily get started without any tutorial.
You just need to shake your cell-phone and dont need any other operations.In addition to hand speed, it also test your endurance.Maybe you can put it as a fitness tool to exercise your hands.If you can keep the speed of shaking, I believe you can get a high score.
When you get a high score, you can challenge your friends.Shake-Phone support charts.Lets compete with the global players.