Propulsion (Game Mechanic)

Propulsion is the basic element by which your city moves. Propulsion buildings add speed, while other buildings add drag. Propulsion buildings are generally required to be built on the outskirts of your kingdoms. Building path which would put them inside your city will push them to the outskirts automatically.

Your current speed is calculated as a percentage of your top possible speed, and very few specifics are given in game on how this mechanic works.

View the list of Propulsion Buildings for more information.