To edit this source code and make your own game you should follow just some step
1. Open file gamedata.plist inside Resources folder

In this file by expanding root dictionary you can see two dictionary iphoneData And ipadData inside them three dictionary for type Easy, Hard, Median each dictionary contain array (LavelArray) you can edit and add new more level by edit item value or adding new item
Item contain following data:-
id = 1 (it is level no make it in sequence)
answer = crown (do not put space between answer)
keys=cjnpotehwair (keys must contain all character of answer)
imagesArray = cantains images name

Add images to inside projects
like :- resources/images/ipad/easy (you can add image at anywhere in project but name of image must be same as game data.plost)
For change in-app Purchases you should change inside the Global1.h file
#define Buy1000Coin @""
#define Buy2500Coin @""
#define Buy6000Coin @""
#define Buy20000Coin @""