DO NOT COMPLETE ALL TASKS EVER , The ending tasks are there to drain away all your time. The 3 buildings are the most important Factory loading dock , Shipping and Festival. The factories supply the goods to keep shipping from emptying completely. The festival should be at 300 and no higher by the time you are finished the city. . The shipping should be at 300 as well. Level out the factories enough so that Shipping doesn't drain the three crates in your city to zero ever. Make sure that your factories put out enough goods. Ditto for the three crates below the festival manager. You finish the city by clicking on continue at the bottom of the city once you save up 8.49 Q shamrocks.