Have played this for a week+ to get to level 17 to earn a third-party $ incentive; only made it to #10. Takes FOREVER to pass to the next level. Have to upgrade buildings to move up, but you can't initially tell how many coins you actually need to do that; only get a coins+gems total on "unlocked" buildings. When I moved to current board, there were already 5 buildings that were in need of repair immediately; don't understand why I didn't get to start with a clean board. Will be deleting.