Quick Tower is for building the tallest tower imaginable. There are three additional modes of play after Build City. As population milestones are reached, more features are unlocked, such as 'Trophy Roofs,' which only appear after building a stellar tower and add to the tower's population. You can't check the population of each tower, but you can replace any tower with another, which will show the change in population. Each district becomes a puzzle of where to fit towers to maximize population. Red towers can be placed only adjacent to blue towers, and green towers need to be adjacent to a red and blue tower.
The blue is the smallest tower at ten segments and can be placed anywhere on the district grid. In the standard Build City campaign mode, the game starts with three towers: residential blue, commercial red and office green.
