Build City Mode: Your goal is to create a thriving Megalopolis! Build towers and place them wisely in the city grid to reach the goal. Increasing your city's population and level unlock new building types. You can see the current city level and the population on the city at the top of the screen. >> Tower Building Mode: You are aiming to reach a target height. The target is shown in the lower left corner. The better you place the roof the more bonus you will get.