There's a *really* annoying menu bug. If the shop is open and you click on the background in the shop window, it closes the shop. PLEASE FIX! IT IS DRIVING ME CRAZY!
This game looks like you should only be able to generate 3 monsters at once. There's a bug, and this isn't being checked for properly. As a result, I can make as many as I want, sell at a profit, rinse-and-repeat. No real strategy.
If you can't beat level 2, you are retarded. It has nothing to do with balancing on top of the tower. You can put the long block in the hole in the sides of the tower. Much like in real life, this keeps it in securely.
Again, this game is really tough. That's why it's good.