Hi Rick,
Thank you for your reply. Yes I know I am not being very interesting nor showing that I understanding about the subject. In fact I do not know what is necessary for a game to be prepared besides programmers, designers, physics experts, maps designers. I am very knew at the matter. That is why I am asking for your help. Don’t worry, I don’t take anything personal, I actually see it as educational.
And, for that reason, if you would like to help me, I appreciate very much.