It's one of the best city building games I have ever played but... It's kinda boring after playing for some minutes. It would be better if you introduce some new features like You have to make each city differently like each city will have different weather conditions. Buildings compatible with the weather. New objective like, your town is going to organize Football World Cup. Decorate it to make the visitors amazed. And many more. Night time view. Try adding some mines like gold, oil, gas etc. Try to add some famous landmarks like Eiffel Tower etc. Please try to add Temples and Pagoda in religious building section. And most importantly, you should start working on graphics gradually. Great!