Coins

 are the main currency in the game.

= Receive = The player receives them:
 * as daily login bonus
 * by fulfilling the orders of the cities
 * by leveling up the players level
 * by fulfilling Contracts
 * by the conversion of Transit Notes
 * as reward for events

= Usage = Coins are used to
 * buy Vehicles
 * level-up Vehicles
 * level-up Factories
 * level-up Ressources

= Coins in the Shop = As statet above, Coins can be gathered by the conversion of Transit Notes. Please see the following article for the exchange rates.