SimTower

To cheat in simtower with Cheat Engine the first thing you have to do is go to settings->scan setting and tick the MEM_MAPPED box. (Probably because the image of the loaded .exe is mapped inside the virtual machine instead of actually loaded there, but not 100% sure. Correct if wrong)

SimTower

The Star Rating pretty much shows your progress in simtower. in the beginning of the game you only have one star. The star rating is shown in the info bar. Overall, there are five stars to collect plus a "tower" rating past five stars. Most items are unlocked at 3 Stars. 041b061a72