I really love this game but it deserves only one star! You can't complete collections of ships in one city, I can't buy ships from the previous City if I unlock another city, I can purchase ships only for the city that was unlocked most recently. Nice gameplay, nice graphics everything is good but this is the most annoying thing, it's same for other games as well, like Train station 2. Need to improvise this or else you'll lose lot of users.