I have played 101 levels!

its an awesome game which is also a good tool to test your physics and building ability.
Some complain about the difficulty of the game. In fact, it would be quite easy and fun if you had managed the skills.
Here are the main skills:
1.Never let red glass drop to the bottom. It will double the deduction of points. Before it drops, just click to break them.
2.Always try to let the blue glass drop to the bottom. it will double the awarded marks.
Having known the two skills, you will find it quite Easy and quick to pass levels. Sometimes even you dont have to consider: just break some KEY red glass which will lead parts of the whole building cracked and then break the dropping red ones and let blue ones drift. Your points will keep balance which is enough for you to pass all the levels. (if it has an end)
Hope this guide will cultivate peoples interest on this game.

PS Finally I stopped at lvl 125 with 105 points left. The level was getting harder and harder.

yughred about Glass Tower