It’s a sports game,and have the same rules as real Bowling.You need play this game with the rules,a bowling game consists of 10 frames.Players are allowed to bowl 2 ball in each frame,it won’t be necessary to bowl again if you knock down all the pins.
You can alo play this App in iWawa, a best App for kids: https://play.google.com/store/apps/details?id=com.sencatech.iwawa.iwawahome