Do not prevent it to mature: how to optimize the "growing" appendix that it remained user-friendly

Hello, Habr! My name is Romanenkov Andrey, I work as the leading programmer in IntellectoKids. We create educational applications for preschool children. This article could not be, after all childish mobile sports, as a rule, have simple logic, do not demand a difficult code and can function without additional efforts from developers. But there is one but. At some point your unpretentious appendix can turn into the perspective project in about tens mini-games inside and weekly updatings. Actually, it happened to us. And here the most interesting begins. Present that...