A very fun puzzle game. In the game you have to use four different colors to fill all the drawing board, but the same color can not overlap, come and challenge it.

To sum up

In fact, there is a kind of illusion, in the didFinishLaunchingWithOptions () method of the AppDelegate, add an AnimVC exactly the same as the startup picture, set AnimVC as the rootViewController of the keyWindow, in the viewDidApper () of AnimVC, Method to perform animation, when the animation is completed by the key to switch the keyWindow rootViewController for the home page VC OK.