Ok so I got addicted by the previous versions of this title. Here is the problem with app developers and this one is included. Stop trying to make it so darn difficult to play two or three worlds in. What you dont seem to understand is phone games are suppose to be fun and exciting and not so anger inducing that you almost throw your phone across the room. Increase the difficulty gradually but dont make it so frustrating that you end up hating the game and leaving it for another one that doesnt make you crazy. Paris and Berlin are just too frustrating and difficult to manage for the 3rd and 4th worlds to get to. They just make me mad and make me want to stop playing the game all together. And leaves a bad taste for the whole franchise. Simple and fun is what you want in an iphone game. Want to make it massively difficult. Write for Xbox or PS4. Very disappointed in this game. And I was in love 10 minutes ago. Now I just am angry. People dont like to be made to feel like a failure on a phone game.