Fun game until you reach the 4 day event portion, so I paid the $15 to stop ads that eventually became annoying to watch and as a plus I would have infinite 2x on income, but by doing so made the events in the game to get special planes now 1000 times harder. It's So hard that even one mission may take 4 hours to 1 day just to complete 1 task, and even using coffee does not help unless you have 100 of them available. the increase difficulty in events is a game killer.