Cities is one of the best games I've played, needed a Sim game. The Mods are icing on the cake. If the Devs keep updating the game it will surpass Simcity 4.
Also New users can also download a app for 99 coins and get a bonus of 30 coins for the app and 250 for "buying" their first app. The apps for the promo aren't the best but you get coins for free.