Thank you very much for your explanation I understand now and I will buy the full version in the future as until they have been updated it's not worth it because iPad is updating all the time so I might just have bought it then they will update the iOS and I won't be able to run the game,,l do so hope you understand,as I really love all your games I have them all on pc ,and I am hoping to get them all for my iPad,you do a fantastic job,I wish I had just a bit of your talents,keep up the good work.