What a great game this is, and if you just need a few pointers or ideas to help you get through a section that you are stuck on, then this page is for you.
If you are still having trouble and just want to get past a level, then please see the individual chapters in the walkthrough section.
1. Look for what you can move
The characters are the obvious ones, but in each level parts of the buildings can be moved in different ways, rotaed, slid, broken apart etc... Try everything. Also other objects come in to the game later which you may need to move like a character to stand on markers etc...
2. Go to the end of your path and try moving things
Sometimes things are only clear when you have moved Ro as far as she can go, then rotate or move the monument to see if a new path is formed.