Do you need a bat to play Pingpong?

Yes!
Yes?
No?
No ! ! !
Hold the ball. Keep going when you feel difficult, then you'll win the game.
At least , you get a success for doing better and better.
It's just a little game, enjoy yourself!
Your scores will be uploaded to the leader board in Game Center.
come on! let's begin.

Do you need a bat to play Ping-pong?

Yes!
Yes?
No?
No ! ! !
Hold the ball. Keep going even through the difficult levels until you win the game.
You will find much success in topping better scores.
It's just a little game of reflexes, so enjoy yourself!
Your scores will be uploaded to the leader board in Game Center.
Let's PLAY.

Did you manage to integrate Game Center with AppGameKit?

Any hints & tips you came across would be nice!

Thanks

Personally I would change it still further if you aren't giving any instructions.

How do I hold the ball?
How do I hit the ball if there's no bat?

There is a help in the game. Thank you all the same.