It seems that Nokia today released a new free game "Modern Mayor" for WP8 world. Mayor give players the task of saving the city from ruin and bring the glory days. That means you have the responsibility entire building, keeping the city clean and donating to charities shopping. Even city journalist is there to help. Did not think the position is just a title, right?
Nokia the basics described as having three facets to help the development of the city: people, money and pollution. People are earned by building more houses. These houses can perform environmental actions, which eliminates pollution. In any case, these people constantly pollute. You unlock upgrades that will eventually eliminate pollution. Without these upgrades, will lead a never-ending battle against pollution.