In the higher levels, the only tips I can give are to build the sawmill first, then build an estate, while you are selling the estate build a workshop. Buy materials while the workshop is going up. Build a bank to donate, then try to work on the goals. Routinely buy more builders because you need to upgrade a lot on these levels and the difference between making the star or not could come down to whether or not you have all upgrades. Make no mistakes, you will need a lot of workers. You can do it quite easily without any kind of cheats or program re-writing. (What's the fun of using a cheat code anyway?) When you get a star on all levels they give you a Cost-Mart that gives profit sharing and free materials. (500 every rent collection.) Try to keep at least two castles on hand to sell quickly for cash on the cash goal levels (make sure they are upgraded fully.) When dealing with castles the upgrades cost a ton of materials so try to keep 10-15,000 on hand so you can upgrade several at a time. Using these will help you get a star on every level, it just might take a little oractice.